Date   

Re: [SDRSharp] how to run in dongle in bypass or direct mode?

jdow <jdow@...>
 

Spark gaps are better than MOVs. MOVs have high capacitance and are good
once. You never quite know when they die.

{^_^}

On 2013/11/03 20:51, estefan2020 wrote:


You can search for 2 3 or 4 ns diodes for static protection, mov for lightning,
and a grounded f block. Use 2 to 6 gage copper wire solid preferred and a 6 ft
or more grounding stake




Sent from Samsung tablet



-------- Original message --------
>From jdow <jdow@...>
Date: 11/03/2013 10:23 PM (GMT-06:00)
To SDRSharp@...
Subject Re: AW: AW: [SDRSharp] how to run in dongle in bypass or direct mode?


Lightning protection is always a good thing to consider in most parts of
the country. (I live in an area with about the lowest incidence of
lightning in the US. So nominally I don't worry. I'd still look back
in some of the early messages here for the protection device that is
normally used in these diodes. I believe the parts used are the Philips
BAV99 High-Speed Dual Diodes. They can be found on E-Bay. 100 of them
is about 8 GBP.

{^_^}

On 2013/11/03 19:23, bob_kd4lv wrote:
> I agree with Joanne. Doesnt make any difference if the receiver antenna
connection is ballanced/unballanced as far as signal strength is concerned.
>
> You might have a problem with static discharges in the ether around your
antenna sending high voltage/current spikes into the dongle. Whereas the
toroidal transformer might deflect some of the static spike away from the dongle.
>
> If static or nearby very high powered transmitters are not a problem (indoor
antennas), I would go with Joanne's direct connection.
>
> Dry air and wind can generate quite a spark from a conductor.
>
> For a good review of antenna grounds and equipment isolation from lightning, see
>
> http://www.hamradiosource.com/v/vspfiles/assets/images/1485-013.pdf
>
> bobbie
> kd4lv
>
> --- In SDRSharp@..., jdow <jdow@...> wrote:
>>
>> Doesn't matter. You're not matching a transmitter. If the noise actually
>> decreases when you disconnect the antenna you are about as good as you
>> are going to get without antenna directivity getting in the picture to
>> null out interference or peak desired signals.
>>
>> {^_^}
>>
>> On 2013/11/03 01:57, siegfried jackstien wrote:
>>> But thev sampling chip has balanced in
>>>
>>> I would either use a toroid
>>>
>>> Or a balanced amp (like df8oe did)
>>>
>>> Dg9bfc
>>>
>>> Sigi
>>>
>>>
>>>
>>>> -----Urspr�ngliche Nachricht-----
>>>> Von: SDRSharp@... [mailto:SDRSharp@...] Im
>>>> Auftrag von jdow
>>>> Gesendet: Sonntag, 3. November 2013 04:56
>>>> An: SDRSharp@...
>>>> Betreff: Re: AW: AW: [SDRSharp] how to run in dongle in bypass or direct
>>>> mode?
>>>>
>>>>
>>>>
>>>> Capacitor isolated straight in.
>>>> {^_^}
>>>>
>>>> On 2013/11/02 19:25, Marion D. Kitchens wrote:
>>>>>
>>>>>
>>>>> Joanne,
>>>>> What would you use instead of the toroid? How would you do the coupling
>>>> for
>>>>> frequencies below 10 MHz, and specifically for the broad cast band ??
>>>>> Marion
>>>>> On Sat, 02 Nov 2013 14:18:23 -0700 jdow <jdow@...
>>>>> <mailto:jdow@...>> writes:
>>>>>
>>>>> I'd not even use the toroid. Do remember the low frequency end of
>>>>> the toroid's "good" range is determined by the size of the core.
>>>>> Using too tiny of a core makes for problems. And of course, you
>>>>> do not necessarily want to use #18 wire.
>>>>>
>>>>> {^_-}
>>>>>
>>>>> On 2013/11/02 07:52, Marion D. Kitchens wrote:
>>>>>> Joanne,
>>>>>>
>>>>>> You make it sound easy. Those are TINY, TINY connectiomns to the chip.
>>>>>> If I tried to use a matching tiny torroid, I would have trouble
>>>> getting
>>>>>> the twisted wired thru it. But I'll try -- after enough coffee to get
>>>>>> my hand steady enough (chuckle, chuckle)
>>>>>>
>>>>>> Marion
>>>>>>
>>>>>> On Sat, 02 Nov 2013 03:21:37 -0700 jdow <jdow@...> writes:
>>>>>>> Hm, for the toroid as Sigi describes it take the winding wire break
>>>>>>> it
>>>>>>> into three lengths. Twist them together but not very tightly. Then
>>>>>>> run
>>>>>>> the bundle through the core twice. Strip the ends. Select two ends
>>>>>>> to
>>>>>>> one of the three wires to be your input. Select one end of one of
>>>>>>> the
>>>>>>> remaining wires and the other end of the other remaining wire and
>>>>>>> twist
>>>>>>> them together, solder, and clip it off short. That makes the four
>>>>>>> turns
>>>>>>> output winding.
>>>>>>>
>>>>>>> The easy way to get the two ends to twist together is to place the
>>>>>>> core
>>>>>>> in front of you. Strip all 6 ends fairly close to the toroid. Bug
>>>>>>> out
>>>>>>> all three wires using an ohmmeter. Dab the tips of the first pair
>>>>>>> with
>>>>>>> red nail polish. Do not cover all the stripped portion, of course.
>>>>>>> Dab
>>>>>>> the tips of the second pair with another color nail polish (maybe
>>>>>>> orange). Now with the toroid in front of you so you are seeing it
>>>>>>> edge
>>>>>>> on take the red tipped wire from one side and the orange tipped wire
>>>>>>> from the other side and twist them together, etc. Then the remaining
>>>>>>> red and orange tips go to the IC. The two wires with no nail polish
>>>>>>> are your input wires. Nip off the colored ends as you solder the
>>>>>>> wires
>>>>>>> into place.
>>>>>>>
>>>>>>> {^_^} Joanne
>>>>>>>
>>>>>>> On 2013/11/01 06:43, Marion D. Kitchens wrote:
>>>>>>>>
>>>>>>>>
>>>>>>>> Thanks Sigi
>>>>>>>> Marion
>>>>>>>> On Fri, 1 Nov 2013 03:02:14 -0000 "siegfried jackstien"
>>>>>>>> <siegfried.jackstien@...
>>>>>>> <mailto:siegfried.jackstien@...>> writes:
>>>>>>>>
>>>>>>>> As a 1:4 use 2 separate coils on one toroid
>>>>>>>>
>>>>>>>> As example 2 turns input and 4 turns output
>>>>>>>>
>>>>>>>> The output (to chip) now is floating and should have no dc ...
>>>>>>> so no caps
>>>>>>>> needed
>>>>>>>>
>>>>>>>> Dg9bfc
>>>>>>>>
>>>>>>>> Sigi
>>>>>>>>
>>>>>>>>> -----Urspr�ngliche Nachricht-----
>>>>>>>>> Von: SDRSharp@...
>>>>>>> [mailto:SDRSharp@...] Im
>>>>>>>>> Auftrag von Marion D. Kitchens
>>>>>>>>> Gesendet: Mittwoch, 30. Oktober 2013 22:19
>>>>>>>>> An: SDRSharp@...
>>>>>>>>> Betreff: Re: AW: [SDRSharp] how to run in dongle in bypass
>>>>>>> or direct mode?
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Sigi
>>>>>>>>>
>>>>>>>>> Are isolating caps needed between the balun and pins 4 and
>>>>>>> 5 ?? Or can I
>>>>>>>>> connect the wires from the balun directly to the chip pins
>>>>>>> ??
>>>>>>>>>
>>>>>>>>> Marion
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> On Wed, 30 Oct 2013 22:11:23 -0000 "siegfried jackstien"
>>>>>>>>> <siegfried.jackstien@...> writes:
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> You only need one dongle (with r820t tuner)
>>>>>>>>>
>>>>>>>>> The modding does add another coax input (for shortwave)
>>>>>>> WITHOUT
>>>>>>>>> loosing vhf
>>>>>>>>> uhf!!!
>>>>>>>>>
>>>>>>>>> Do NOT de-solder the caps (they send the tuner signal to
>>
>
>
>
>
> ------------------------------------
>
> Yahoo Groups Links
>
>
>
>




Re: [SDRSharp] Custom control panel update

David J Taylor
 

From: cmdrcosmac

An update since I last posted here,

I have built a control panel as discussed in a few threads this past Spring.
It's a small perfboard panel with twenty pushbutton switches and one knob.
The buttons and knob are wired to the controller board from an old Logitech
media keyboard. I chose a few frequently used controls in SDR# and linked them
to these buttons with an Autohotkey script.
The panel just plugs into the computer like another keyboard.
Due to the convenient layout of the buttons SDR# works more like a "real" radio.
If the Group is interested I can write this up.

-- Chuck
=====================================

Yes, please, chuck. If you don't have a Web site we could put the information in the Wiki, or the group Files area, or I can host it on my own Web site for you.

Thanks,
David
--
SatSignal Software - Quality software written to your requirements
Web: http://www.satsignal.eu
Email: david-taylor@...


Re: [SDRSharp] how to run in dongle in bypass or direct mode?

dan m
 

You can search for 2 3 or 4 ns diodes for static protection, mov for lightning, and a grounded f block.  Use 2 to 6 gage copper wire solid preferred and a 6 ft or more grounding stake




Sent from Samsung tablet



-------- Original message --------
From jdow
Date: 11/03/2013 10:23 PM (GMT-06:00)
To SDRSharp@...
Subject Re: AW: AW: [SDRSharp] how to run in dongle in bypass or direct mode?


 

Lightning protection is always a good thing to consider in most parts of
the country. (I live in an area with about the lowest incidence of
lightning in the US. So nominally I don't worry. I'd still look back
in some of the early messages here for the protection device that is
normally used in these diodes. I believe the parts used are the Philips
BAV99 High-Speed Dual Diodes. They can be found on E-Bay. 100 of them
is about 8 GBP.

{^_^}

On 2013/11/03 19:23, bob_kd4lv wrote:
> I agree with Joanne. Doesnt make any difference if the receiver antenna connection is ballanced/unballanced as far as signal strength is concerned.
>
> You might have a problem with static discharges in the ether around your antenna sending high voltage/current spikes into the dongle. Whereas the toroidal transformer might deflect some of the static spike away from the dongle.
>
> If static or nearby very high powered transmitters are not a problem (indoor antennas), I would go with Joanne's direct connection.
>
> Dry air and wind can generate quite a spark from a conductor.
>
> For a good review of antenna grounds and equipment isolation from lightning, see
>
> http://www.hamradiosource.com/v/vspfiles/assets/images/1485-013.pdf
>
> bobbie
> kd4lv
>
> --- In SDRSharp@..., jdow wrote:
>>
>> Doesn't matter. You're not matching a transmitter. If the noise actually
>> decreases when you disconnect the antenna you are about as good as you
>> are going to get without antenna directivity getting in the picture to
>> null out interference or peak desired signals.
>>
>> {^_^}
>>
>> On 2013/11/03 01:57, siegfried jackstien wrote:
>>> But thev sampling chip has balanced in
>>>
>>> I would either use a toroid
>>>
>>> Or a balanced amp (like df8oe did)
>>>
>>> Dg9bfc
>>>
>>> Sigi
>>>
>>>
>>>
>>>> -----Ursprüngliche Nachricht-----
>>>> Von: SDRSharp@... [mailto:SDRSharp@...] Im
>>>> Auftrag von jdow
>>>> Gesendet: Sonntag, 3. November 2013 04:56
>>>> An: SDRSharp@...
>>>> Betreff: Re: AW: AW: [SDRSharp] how to run in dongle in bypass or direct
>>>> mode?
>>>>
>>>>
>>>>
>>>> Capacitor isolated straight in.
>>>> {^_^}
>>>>
>>>> On 2013/11/02 19:25, Marion D. Kitchens wrote:
>>>>>
>>>>>
>>>>> Joanne,
>>>>> What would you use instead of the toroid? How would you do the coupling
>>>> for
>>>>> frequencies below 10 MHz, and specifically for the broad cast band ??
>>>>> Marion
>>>>> On Sat, 02 Nov 2013 14:18:23 -0700 jdow >>>>> > writes:
>>>>>
>>>>> I'd not even use the toroid. Do remember the low frequency end of
>>>>> the toroid's "good" range is determined by the size of the core.
>>>>> Using too tiny of a core makes for problems. And of course, you
>>>>> do not necessarily want to use #18 wire.
>>>>>
>>>>> {^_-}
>>>>>
>>>>> On 2013/11/02 07:52, Marion D. Kitchens wrote:
>>>>>> Joanne,
>>>>>>
>>>>>> You make it sound easy. Those are TINY, TINY connectiomns to the chip.
>>>>>> If I tried to use a matching tiny torroid, I would have trouble
>>>> getting
>>>>>> the twisted wired thru it. But I'll try -- after enough coffee to get
>>>>>> my hand steady enough (chuckle, chuckle)
>>>>>>
>>>>>> Marion
>>>>>>
>>>>>> On Sat, 02 Nov 2013 03:21:37 -0700 jdow writes:
>>>>>>> Hm, for the toroid as Sigi describes it take the winding wire break
>>>>>>> it
>>>>>>> into three lengths. Twist them together but not very tightly. Then
>>>>>>> run
>>>>>>> the bundle through the core twice. Strip the ends. Select two ends
>>>>>>> to
>>>>>>> one of the three wires to be your input. Select one end of one of
>>>>>>> the
>>>>>>> remaining wires and the other end of the other remaining wire and
>>>>>>> twist
>>>>>>> them together, solder, and clip it off short. That makes the four
>>>>>>> turns
>>>>>>> output winding.
>>>>>>>
>>>>>>> The easy way to get the two ends to twist together is to place the
>>>>>>> core
>>>>>>> in front of you. Strip all 6 ends fairly close to the toroid. Bug
>>>>>>> out
>>>>>>> all three wires using an ohmmeter. Dab the tips of the first pair
>>>>>>> with
>>>>>>> red nail polish. Do not cover all the stripped portion, of course.
>>>>>>> Dab
>>>>>>> the tips of the second pair with another color nail polish (maybe
>>>>>>> orange). Now with the toroid in front of you so you are seeing it
>>>>>>> edge
>>>>>>> on take the red tipped wire from one side and the orange tipped wire
>>>>>>> from the other side and twist them together, etc. Then the remaining
>>>>>>> red and orange tips go to the IC. The two wires with no nail polish
>>>>>>> are your input wires. Nip off the colored ends as you solder the
>>>>>>> wires
>>>>>>> into place.
>>>>>>>
>>>>>>> {^_^} Joanne
>>>>>>>
>>>>>>> On 2013/11/01 06:43, Marion D. Kitchens wrote:
>>>>>>>>
>>>>>>>>
>>>>>>>> Thanks Sigi
>>>>>>>> Marion
>>>>>>>> On Fri, 1 Nov 2013 03:02:14 -0000 "siegfried jackstien"
>>>>>>>> >>>>>>> > writes:
>>>>>>>>
>>>>>>>> As a 1:4 use 2 separate coils on one toroid
>>>>>>>>
>>>>>>>> As example 2 turns input and 4 turns output
>>>>>>>>
>>>>>>>> The output (to chip) now is floating and should have no dc ...
>>>>>>> so no caps
>>>>>>>> needed
>>>>>>>>
>>>>>>>> Dg9bfc
>>>>>>>>
>>>>>>>> Sigi
>>>>>>>>
>>>>>>>>> -----Ursprüngliche Nachricht-----
>>>>>>>>> Von: SDRSharp@...
>>>>>>> [mailto:SDRSharp@...] Im
>>>>>>>>> Auftrag von Marion D. Kitchens
>>>>>>>>> Gesendet: Mittwoch, 30. Oktober 2013 22:19
>>>>>>>>> An: SDRSharp@...
>>>>>>>>> Betreff: Re: AW: [SDRSharp] how to run in dongle in bypass
>>>>>>> or direct mode?
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Sigi
>>>>>>>>>
>>>>>>>>> Are isolating caps needed between the balun and pins 4 and
>>>>>>> 5 ?? Or can I
>>>>>>>>> connect the wires from the balun directly to the chip pins
>>>>>>> ??
>>>>>>>>>
>>>>>>>>> Marion
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> On Wed, 30 Oct 2013 22:11:23 -0000 "siegfried jackstien"
>>>>>>>>> writes:
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> You only need one dongle (with r820t tuner)
>>>>>>>>>
>>>>>>>>> The modding does add another coax input (for shortwave)
>>>>>>> WITHOUT
>>>>>>>>> loosing vhf
>>>>>>>>> uhf!!!
>>>>>>>>>
>>>>>>>>> Do NOT de-solder the caps (they send the tuner signal to
>>
>
>
>
>
> ------------------------------------
>
> Yahoo Groups Links
>
>
>
>


Re: [SDRSharp] how to run in dongle in bypass or direct mode?

jdow <jdow@...>
 

Lightning protection is always a good thing to consider in most parts of
the country. (I live in an area with about the lowest incidence of
lightning in the US. So nominally I don't worry. I'd still look back
in some of the early messages here for the protection device that is
normally used in these diodes. I believe the parts used are the Philips
BAV99 High-Speed Dual Diodes. They can be found on E-Bay. 100 of them
is about 8 GBP.

{^_^}

On 2013/11/03 19:23, bob_kd4lv wrote:
I agree with Joanne. Doesnt make any difference if the receiver antenna connection is ballanced/unballanced as far as signal strength is concerned.

You might have a problem with static discharges in the ether around your antenna sending high voltage/current spikes into the dongle. Whereas the toroidal transformer might deflect some of the static spike away from the dongle.

If static or nearby very high powered transmitters are not a problem (indoor antennas), I would go with Joanne's direct connection.

Dry air and wind can generate quite a spark from a conductor.

For a good review of antenna grounds and equipment isolation from lightning, see

http://www.hamradiosource.com/v/vspfiles/assets/images/1485-013.pdf

bobbie
kd4lv

--- In SDRSharp@..., jdow <jdow@...> wrote:

Doesn't matter. You're not matching a transmitter. If the noise actually
decreases when you disconnect the antenna you are about as good as you
are going to get without antenna directivity getting in the picture to
null out interference or peak desired signals.

{^_^}

On 2013/11/03 01:57, siegfried jackstien wrote:
But thev sampling chip has balanced in

I would either use a toroid

Or a balanced amp (like df8oe did)

Dg9bfc

Sigi



-----Urspr�ngliche Nachricht-----
Von: SDRSharp@... [mailto:SDRSharp@...] Im
Auftrag von jdow
Gesendet: Sonntag, 3. November 2013 04:56
An: SDRSharp@...
Betreff: Re: AW: AW: [SDRSharp] how to run in dongle in bypass or direct
mode?



Capacitor isolated straight in.
{^_^}

On 2013/11/02 19:25, Marion D. Kitchens wrote:


Joanne,
What would you use instead of the toroid? How would you do the coupling
for
frequencies below 10 MHz, and specifically for the broad cast band ??
Marion
On Sat, 02 Nov 2013 14:18:23 -0700 jdow <jdow@...
<mailto:jdow@...>> writes:

I'd not even use the toroid. Do remember the low frequency end of
the toroid's "good" range is determined by the size of the core.
Using too tiny of a core makes for problems. And of course, you
do not necessarily want to use #18 wire.

{^_-}

On 2013/11/02 07:52, Marion D. Kitchens wrote:
Joanne,

You make it sound easy. Those are TINY, TINY connectiomns to the chip.
If I tried to use a matching tiny torroid, I would have trouble
getting
the twisted wired thru it. But I'll try -- after enough coffee to get
my hand steady enough (chuckle, chuckle)

Marion

On Sat, 02 Nov 2013 03:21:37 -0700 jdow <jdow@...> writes:
Hm, for the toroid as Sigi describes it take the winding wire break
it
into three lengths. Twist them together but not very tightly. Then
run
the bundle through the core twice. Strip the ends. Select two ends
to
one of the three wires to be your input. Select one end of one of
the
remaining wires and the other end of the other remaining wire and
twist
them together, solder, and clip it off short. That makes the four
turns
output winding.

The easy way to get the two ends to twist together is to place the
core
in front of you. Strip all 6 ends fairly close to the toroid. Bug
out
all three wires using an ohmmeter. Dab the tips of the first pair
with
red nail polish. Do not cover all the stripped portion, of course.
Dab
the tips of the second pair with another color nail polish (maybe
orange). Now with the toroid in front of you so you are seeing it
edge
on take the red tipped wire from one side and the orange tipped wire
from the other side and twist them together, etc. Then the remaining
red and orange tips go to the IC. The two wires with no nail polish
are your input wires. Nip off the colored ends as you solder the
wires
into place.

{^_^} Joanne

On 2013/11/01 06:43, Marion D. Kitchens wrote:


Thanks Sigi
Marion
On Fri, 1 Nov 2013 03:02:14 -0000 "siegfried jackstien"
<siegfried.jackstien@...
<mailto:siegfried.jackstien@...>> writes:

As a 1:4 use 2 separate coils on one toroid

As example 2 turns input and 4 turns output

The output (to chip) now is floating and should have no dc ...
so no caps
needed

Dg9bfc

Sigi

-----Urspr�ngliche Nachricht-----
Von: SDRSharp@...
[mailto:SDRSharp@...] Im
Auftrag von Marion D. Kitchens
Gesendet: Mittwoch, 30. Oktober 2013 22:19
An: SDRSharp@...
Betreff: Re: AW: [SDRSharp] how to run in dongle in bypass
or direct mode?



Sigi

Are isolating caps needed between the balun and pins 4 and
5 ?? Or can I
connect the wires from the balun directly to the chip pins
??

Marion


On Wed, 30 Oct 2013 22:11:23 -0000 "siegfried jackstien"
<siegfried.jackstien@...> writes:



You only need one dongle (with r820t tuner)

The modding does add another coax input (for shortwave)
WITHOUT
loosing vhf
uhf!!!

Do NOT de-solder the caps (they send the tuner signal to



------------------------------------

Yahoo Groups Links




Custom control panel update

cmdrcosmac
 

An update since I last posted here,

I have built a control panel as discussed in a few threads this past Spring.
It's a small perfboard panel with twenty pushbutton switches and one knob.
The buttons and knob are wired to the controller board from an old Logitech
media keyboard. I chose a few frequently used controls in SDR# and linked them
to these buttons with an Autohotkey script.
The panel just plugs into the computer like another keyboard.
Due to the convenient layout of the buttons SDR# works more like a "real" radio.
If the Group is interested I can write this up.

-- Chuck


Re: [SDRSharp] how to run in dongle in bypass or direct mode?

bob johnson
 

I agree with Joanne. Doesnt make any difference if the receiver antenna connection is ballanced/unballanced as far as signal strength is concerned.

You might have a problem with static discharges in the ether around your antenna sending high voltage/current spikes into the dongle. Whereas the toroidal transformer might deflect some of the static spike away from the dongle.

If static or nearby very high powered transmitters are not a problem (indoor antennas), I would go with Joanne's direct connection.

Dry air and wind can generate quite a spark from a conductor.

For a good review of antenna grounds and equipment isolation from lightning, see

http://www.hamradiosource.com/v/vspfiles/assets/images/1485-013.pdf

bobbie
kd4lv

--- In SDRSharp@..., jdow <jdow@...> wrote:

Doesn't matter. You're not matching a transmitter. If the noise actually
decreases when you disconnect the antenna you are about as good as you
are going to get without antenna directivity getting in the picture to
null out interference or peak desired signals.

{^_^}

On 2013/11/03 01:57, siegfried jackstien wrote:
But thev sampling chip has balanced in

I would either use a toroid

Or a balanced amp (like df8oe did)

Dg9bfc

Sigi



-----Ursprüngliche Nachricht-----
Von: SDRSharp@... [mailto:SDRSharp@...] Im
Auftrag von jdow
Gesendet: Sonntag, 3. November 2013 04:56
An: SDRSharp@...
Betreff: Re: AW: AW: [SDRSharp] how to run in dongle in bypass or direct
mode?



Capacitor isolated straight in.
{^_^}

On 2013/11/02 19:25, Marion D. Kitchens wrote:


Joanne,
What would you use instead of the toroid? How would you do the coupling
for
frequencies below 10 MHz, and specifically for the broad cast band ??
Marion
On Sat, 02 Nov 2013 14:18:23 -0700 jdow <jdow@...
<mailto:jdow@...>> writes:

I'd not even use the toroid. Do remember the low frequency end of
the toroid's "good" range is determined by the size of the core.
Using too tiny of a core makes for problems. And of course, you
do not necessarily want to use #18 wire.

{^_-}

On 2013/11/02 07:52, Marion D. Kitchens wrote:
Joanne,

You make it sound easy. Those are TINY, TINY connectiomns to the chip.
If I tried to use a matching tiny torroid, I would have trouble
getting
the twisted wired thru it. But I'll try -- after enough coffee to get
my hand steady enough (chuckle, chuckle)

Marion

On Sat, 02 Nov 2013 03:21:37 -0700 jdow <jdow@...> writes:
Hm, for the toroid as Sigi describes it take the winding wire break
it
into three lengths. Twist them together but not very tightly. Then
run
the bundle through the core twice. Strip the ends. Select two ends
to
one of the three wires to be your input. Select one end of one of
the
remaining wires and the other end of the other remaining wire and
twist
them together, solder, and clip it off short. That makes the four
turns
output winding.

The easy way to get the two ends to twist together is to place the
core
in front of you. Strip all 6 ends fairly close to the toroid. Bug
out
all three wires using an ohmmeter. Dab the tips of the first pair
with
red nail polish. Do not cover all the stripped portion, of course.
Dab
the tips of the second pair with another color nail polish (maybe
orange). Now with the toroid in front of you so you are seeing it
edge
on take the red tipped wire from one side and the orange tipped wire
from the other side and twist them together, etc. Then the remaining
red and orange tips go to the IC. The two wires with no nail polish
are your input wires. Nip off the colored ends as you solder the
wires
into place.

{^_^} Joanne

On 2013/11/01 06:43, Marion D. Kitchens wrote:


Thanks Sigi
Marion
On Fri, 1 Nov 2013 03:02:14 -0000 "siegfried jackstien"
<siegfried.jackstien@...
<mailto:siegfried.jackstien@...>> writes:

As a 1:4 use 2 separate coils on one toroid

As example 2 turns input and 4 turns output

The output (to chip) now is floating and should have no dc ...
so no caps
needed

Dg9bfc

Sigi

-----Ursprüngliche Nachricht-----
Von: SDRSharp@...
[mailto:SDRSharp@...] Im
Auftrag von Marion D. Kitchens
Gesendet: Mittwoch, 30. Oktober 2013 22:19
An: SDRSharp@...
Betreff: Re: AW: [SDRSharp] how to run in dongle in bypass
or direct mode?



Sigi

Are isolating caps needed between the balun and pins 4 and
5 ?? Or can I
connect the wires from the balun directly to the chip pins
??

Marion


On Wed, 30 Oct 2013 22:11:23 -0000 "siegfried jackstien"
<siegfried.jackstien@...> writes:



You only need one dongle (with r820t tuner)

The modding does add another coax input (for shortwave)
WITHOUT
loosing vhf
uhf!!!

Do NOT de-solder the caps (they send the tuner signal to


Re: [SDRSharp] ANTENNAS

jdow <jdow@...>
 

Two conical Dixie cups made of metal mesh....

{^_-}

On 2013/11/03 16:05, Mark Dj-eZ wrote:


Reminds me of two metal (mesh) wast paper baskets strapped end to end :)




> To: SDRSharp@...
> From: jdow@...
> Date: Tue, 29 Oct 2013 16:08:26 -0700
> Subject: Re: [SDRSharp] ANTENNAS
>
> It's designed as a very wide band antenna. Look up "Bow-tie" antenna
> or biconical antenna. They have very broad bandwidths compared to
> usual dipoles. This antenna may have some relatively dead frequencies.
> So do discones.
>


Re: [SDRSharp] ANTENNAS

Mark Dj-eZ <K4EEZ@...>
 

Reminds me of two metal (mesh) wast paper baskets strapped end to end :)




> To: SDRSharp@...
> From: jdow@...
> Date: Tue, 29 Oct 2013 16:08:26 -0700
> Subject: Re: [SDRSharp] ANTENNAS
>
> It's designed as a very wide band antenna. Look up "Bow-tie" antenna
> or biconical antenna. They have very broad bandwidths compared to
> usual dipoles. This antenna may have some relatively dead frequencies.
> So do discones.
>


Re: [SDRSharp] Re: how to run in dongle in bypass or direct mode?

jdow <jdow@...>
 

43 MHz will work by itself. Your dongle will tune to mostly bare
frequencies between 43 MHz and 73 MHz. Unless you have a strong
signal from a neighbor on 50 MHz-54 MHz, Bob's your uncle.

{^_^}

On 2013/11/03 04:56, don_wa5ngp wrote:
well, I figured out why my configuration does not work well at 3mhz. My LO is at 104Mhz. It turns out that there is a strong FM station at 107mhz that comes thru with even NO connections of any kind so the front end is way overloaded no matter what. I suspect that if I look around outside I'll see its antenna, :(

I've got a crystal at 43mhz. I think I'll use it to make a tripler for the LO. That will shift everything up another ~ 30mhz.

After reading the E4000 spec I also concluded that there is quite a bit of value add with its capabilities. In short, I've put the direct mode stuff on the back burner. I'm sure I'm can make what I have work better.

73
Don
--- In SDRSharp@..., "don_wa5ngp" <m240zz@...> wrote:

yeow, those are tiny wires.
--- In SDRSharp@..., WB8CJW <dale.elshoff@> wrote:

The dongle I modified didn't have any capacitors or pads to connect the
balun to for pins 4 and 5 so it was a real challenge trying to solder 30
AWG wires to the pins that are not only next to each other but are as
wide as the wire I was using. Now thinking back I should have used #38
or smaller which would have been a little more flexible to connect
between the IC and the 4:1 transformer IC plus less prone to bridge
solder between. Also could have used some Capton tape, super glue or
Tac-Pac to hold the wires in place while soldering. Of course if I had
access to a descent stereo microscope or a surface mount inspection
camera that would have make things a bit easier as well.

After all that difficulty it turns out my home brew up-converter is far
superior and I found it wasn't worth the effort making a direct
connection. This was just something I wanted to try. Had there been a
stub connection on the board from pins 4 & 5 to a pad or via that would
have made it a breeze in comparison.

Just my 2 cents thrown in.

Dale, WB8CJW



------------------------------------

Yahoo Groups Links



Re: [SDRSharp] how to run in dongle in bypass or direct mode?

jdow <jdow@...>
 

Doesn't matter. You're not matching a transmitter. If the noise actually
decreases when you disconnect the antenna you are about as good as you
are going to get without antenna directivity getting in the picture to
null out interference or peak desired signals.

{^_^}

On 2013/11/03 01:57, siegfried jackstien wrote:
But thev sampling chip has balanced in

I would either use a toroid

Or a balanced amp (like df8oe did)

Dg9bfc

Sigi



-----Urspr�ngliche Nachricht-----
Von: SDRSharp@... [mailto:SDRSharp@...] Im
Auftrag von jdow
Gesendet: Sonntag, 3. November 2013 04:56
An: SDRSharp@...
Betreff: Re: AW: AW: [SDRSharp] how to run in dongle in bypass or direct
mode?



Capacitor isolated straight in.
{^_^}

On 2013/11/02 19:25, Marion D. Kitchens wrote:


Joanne,
What would you use instead of the toroid? How would you do the coupling
for
frequencies below 10 MHz, and specifically for the broad cast band ??
Marion
On Sat, 02 Nov 2013 14:18:23 -0700 jdow <jdow@...
<mailto:jdow@...>> writes:

I'd not even use the toroid. Do remember the low frequency end of
the toroid's "good" range is determined by the size of the core.
Using too tiny of a core makes for problems. And of course, you
do not necessarily want to use #18 wire.

{^_-}

On 2013/11/02 07:52, Marion D. Kitchens wrote:
Joanne,

You make it sound easy. Those are TINY, TINY connectiomns to the chip.
If I tried to use a matching tiny torroid, I would have trouble
getting
the twisted wired thru it. But I'll try -- after enough coffee to get
my hand steady enough (chuckle, chuckle)

Marion

On Sat, 02 Nov 2013 03:21:37 -0700 jdow <jdow@...> writes:
Hm, for the toroid as Sigi describes it take the winding wire break
it
into three lengths. Twist them together but not very tightly. Then
run
the bundle through the core twice. Strip the ends. Select two ends
to
one of the three wires to be your input. Select one end of one of
the
remaining wires and the other end of the other remaining wire and
twist
them together, solder, and clip it off short. That makes the four
turns
output winding.

The easy way to get the two ends to twist together is to place the
core
in front of you. Strip all 6 ends fairly close to the toroid. Bug
out
all three wires using an ohmmeter. Dab the tips of the first pair
with
red nail polish. Do not cover all the stripped portion, of course.
Dab
the tips of the second pair with another color nail polish (maybe
orange). Now with the toroid in front of you so you are seeing it
edge
on take the red tipped wire from one side and the orange tipped wire
from the other side and twist them together, etc. Then the remaining
red and orange tips go to the IC. The two wires with no nail polish
are your input wires. Nip off the colored ends as you solder the
wires
into place.

{^_^} Joanne

On 2013/11/01 06:43, Marion D. Kitchens wrote:


Thanks Sigi
Marion
On Fri, 1 Nov 2013 03:02:14 -0000 "siegfried jackstien"
<siegfried.jackstien@...
<mailto:siegfried.jackstien@...>> writes:

As a 1:4 use 2 separate coils on one toroid

As example 2 turns input and 4 turns output

The output (to chip) now is floating and should have no dc ...
so no caps
needed

Dg9bfc

Sigi

-----Urspr�ngliche Nachricht-----
Von: SDRSharp@...
[mailto:SDRSharp@...] Im
Auftrag von Marion D. Kitchens
Gesendet: Mittwoch, 30. Oktober 2013 22:19
An: SDRSharp@...
Betreff: Re: AW: [SDRSharp] how to run in dongle in bypass
or direct mode?



Sigi

Are isolating caps needed between the balun and pins 4 and
5 ?? Or can I
connect the wires from the balun directly to the chip pins
??

Marion


On Wed, 30 Oct 2013 22:11:23 -0000 "siegfried jackstien"
<siegfried.jackstien@...> writes:



You only need one dongle (with r820t tuner)

The modding does add another coax input (for shortwave)
WITHOUT
loosing vhf
uhf!!!

Do NOT de-solder the caps (they send the tuner signal to


Re: [SDRSharp] New Option Wanted in SDR#

Siegfried Jackstien
 

There is a dde plugin for sdrsharp (normally use to track frequency for
receiving sats) ... that dde plugin should give you a "port" for the
frequency .... not a text file ... but a dde link should be "better" then
that

With a different soft (hdsdr) together omnirig it is easy to sync a rig with
sdr .... but also with sdrsharp it should be possible (maybe you need ham
radio deluxe instead of omnirig)

Dg9bfc

sigi

-----Ursprüngliche Nachricht-----
Von: SDRSharp@... [mailto:SDRSharp@...] Im
Auftrag von pa3bnx
Gesendet: Sonntag, 3. November 2013 18:41
An: SDRSharp@...
Betreff: [SDRSharp] New Option Wanted in SDR#



Hello Every Body,

I am very busy with writing my Doppler Software
That also runs on SoundCard on the PC

My Sites:

http://www.pi4wag.nl/index.php/pseudo-doppler-radio-direction-finder
http://members.chello.nl/~w.hofman/pa8w/sssd.htm

I should want an option in SDR# to have the frequency output in
some text format to a txt file so I could read that file and use it
in my software to set my ft817 on frequency.

So just a simple txt file with 145250 kHz or something like that
when I change the frequence in SDR#

I then could do doppler direction finding with 4 antennas and my
SuperSimpleSound Doppler
and have a separate antenna for the DVB-T stick for seeing the spectrum
all on one PC.

Any ideas ?

73's

PA3BNX
Name =Lodewijk Baars
Country = Netherlands




New Option Wanted in SDR#

pa3bnx
 

Hello Every Body,

I am very busy with writing my Doppler Software
That also runs on SoundCard on the PC

My Sites:

http://www.pi4wag.nl/index.php/pseudo-doppler-radio-direction-finder
http://members.chello.nl/~w.hofman/pa8w/sssd.htm


I should want an option in SDR# to have the frequency output in
some text format to a txt file so I could read that file and use it
in my software to set my ft817 on frequency.

So just a simple txt file with 145250 kHz or something like that
when I change the frequence in SDR#

I then could do doppler direction finding with 4 antennas and my
SuperSimpleSound Doppler
and have a separate antenna for the DVB-T stick for seeing the spectrum
all on one PC.

Any ideas ?


73's

PA3BNX
Name =Lodewijk Baars
Country = Netherlands


Older x64 directory

Benny D. Miller Jr <w4qed@...>
 

Good day all,

 

At one time there were an x32 and an x64 directory. Did these just fade away?

 

Ben ARS w4qed




This email is free from viruses and malware because avast! Antivirus protection is active.



Re: [SDRSharp] Re: Windows 8

Marion D. Kitchens <k4gok@...>
 

I have had good luck / results with Norton 360.  So I haven't tried any of the others.
 
Marion
 
 
On Sat, 02 Nov 2013 21:25:59 -0700 jdow <jdow@...> writes:

 

It cost every bit of what it's really worth. They are at best "average"
in performance. Of late AVG has looked pretty good. Aside from Symmantec's
"things" behaving as if they were malware designed to make your machine
unusable they are on the ball and provide good protection. Kaspersky
seems to do well. Avira also seems to do well.

The best AV tool around is "if you have to ask you can't afford it."

{^_^}

On 2013/11/02 18:32, Mike Simpson wrote:
>
>
> Hi Bobbie,
> Windows 8.1 comes with Windows Defender built in.
> Regards, Mike Simpson
> Penrith, NSW, Australia
> http://www.rstools.info
> ------ Original Message ------
> From: "Bob"
> To: SDRSharp@...
> Sent: 3/11/2013 11:35:17 AM
> Subject: [SDRSharp] Re: Windows 8
>>
>> microsoft security essentials works great and is free, but not sure it works
>> on windows 8.x .
>> bobbie


Re: how to run in dongle in bypass or direct mode?

diyer
 

well, I figured out why my configuration does not work well at 3mhz. My LO is at 104Mhz. It turns out that there is a strong FM station at 107mhz that comes thru with even NO connections of any kind so the front end is way overloaded no matter what. I suspect that if I look around outside I'll see its antenna, :(

I've got a crystal at 43mhz. I think I'll use it to make a tripler for the LO. That will shift everything up another ~ 30mhz.

After reading the E4000 spec I also concluded that there is quite a bit of value add with its capabilities. In short, I've put the direct mode stuff on the back burner. I'm sure I'm can make what I have work better.

73
Don

--- In SDRSharp@..., "don_wa5ngp" <m240zz@...> wrote:

yeow, those are tiny wires.
--- In SDRSharp@..., WB8CJW <dale.elshoff@> wrote:

The dongle I modified didn't have any capacitors or pads to connect the
balun to for pins 4 and 5 so it was a real challenge trying to solder 30
AWG wires to the pins that are not only next to each other but are as
wide as the wire I was using. Now thinking back I should have used #38
or smaller which would have been a little more flexible to connect
between the IC and the 4:1 transformer IC plus less prone to bridge
solder between. Also could have used some Capton tape, super glue or
Tac-Pac to hold the wires in place while soldering. Of course if I had
access to a descent stereo microscope or a surface mount inspection
camera that would have make things a bit easier as well.

After all that difficulty it turns out my home brew up-converter is far
superior and I found it wasn't worth the effort making a direct
connection. This was just something I wanted to try. Had there been a
stub connection on the board from pins 4 & 5 to a pad or via that would
have made it a breeze in comparison.

Just my 2 cents thrown in.

Dale, WB8CJW


Re: [SDRSharp] Re: Windows 8

David J Taylor
 

That link says it is for XP/Vista/Windows 7 - I already had Defender on the PC I upgraded to Windows 8.1 and the installer said that 8.1 was not compatible with MS Essentials.

Mike
=====================================

Essentials is already built into Windows 8/8.1

Cheers,
David
--
SatSignal Software - Quality software written to your requirements
Web: http://www.satsignal.eu
Email: david-taylor@...


Re: [SDRSharp] Re: Windows 8

agene
 

 
Regards, Mike Simpson
Penrith, NSW, Australia
http://www.rstools.info
 
That link says it is for XP/Vista/Windows 7 - I already had Defender on the PC I upgraded to Windows 8.1 and the installer said that 8.1 was not compatible with MS Essentials.
 
Mike
 
 

------ Original Message ------
From: "Bob" <bob4john@...>
Sent: 3/11/2013 5:08:37 PM
Subject: [SDRSharp] Re: Windows 8
 

but essentials will automatically disable defender and run a better scan and live protection.
 
 
and it runs with windows 8.x
 
check it out, I think you will like it.
 
 
bobbie
 


Re: [SDRSharp] how to run in dongle in bypass or direct mode?

Siegfried Jackstien
 

But thev sampling chip has balanced in

I would either use a toroid

Or a balanced amp (like df8oe did)

Dg9bfc

Sigi

-----Ursprüngliche Nachricht-----
Von: SDRSharp@... [mailto:SDRSharp@...] Im
Auftrag von jdow
Gesendet: Sonntag, 3. November 2013 04:56
An: SDRSharp@...
Betreff: Re: AW: AW: [SDRSharp] how to run in dongle in bypass or direct
mode?



Capacitor isolated straight in.
{^_^}

On 2013/11/02 19:25, Marion D. Kitchens wrote:


Joanne,
What would you use instead of the toroid? How would you do the coupling
for
frequencies below 10 MHz, and specifically for the broad cast band ??
Marion
On Sat, 02 Nov 2013 14:18:23 -0700 jdow <jdow@...
<mailto:jdow@...>> writes:

I'd not even use the toroid. Do remember the low frequency end of
the toroid's "good" range is determined by the size of the core.
Using too tiny of a core makes for problems. And of course, you
do not necessarily want to use #18 wire.

{^_-}

On 2013/11/02 07:52, Marion D. Kitchens wrote:
Joanne,

You make it sound easy. Those are TINY, TINY connectiomns to the chip.
If I tried to use a matching tiny torroid, I would have trouble
getting
the twisted wired thru it. But I'll try -- after enough coffee to get
my hand steady enough (chuckle, chuckle)

Marion

On Sat, 02 Nov 2013 03:21:37 -0700 jdow <jdow@...> writes:
Hm, for the toroid as Sigi describes it take the winding wire break
it
into three lengths. Twist them together but not very tightly. Then
run
the bundle through the core twice. Strip the ends. Select two ends
to
one of the three wires to be your input. Select one end of one of
the
remaining wires and the other end of the other remaining wire and
twist
them together, solder, and clip it off short. That makes the four
turns
output winding.

The easy way to get the two ends to twist together is to place the
core
in front of you. Strip all 6 ends fairly close to the toroid. Bug
out
all three wires using an ohmmeter. Dab the tips of the first pair
with
red nail polish. Do not cover all the stripped portion, of course.
Dab
the tips of the second pair with another color nail polish (maybe
orange). Now with the toroid in front of you so you are seeing it
edge
on take the red tipped wire from one side and the orange tipped wire
from the other side and twist them together, etc. Then the remaining
red and orange tips go to the IC. The two wires with no nail polish
are your input wires. Nip off the colored ends as you solder the
wires
into place.

{^_^} Joanne

On 2013/11/01 06:43, Marion D. Kitchens wrote:


Thanks Sigi
Marion
On Fri, 1 Nov 2013 03:02:14 -0000 "siegfried jackstien"
<siegfried.jackstien@...
<mailto:siegfried.jackstien@...>> writes:

As a 1:4 use 2 separate coils on one toroid

As example 2 turns input and 4 turns output

The output (to chip) now is floating and should have no dc ...
so no caps
needed

Dg9bfc

Sigi

-----Ursprüngliche Nachricht-----
Von: SDRSharp@...
[mailto:SDRSharp@...] Im
Auftrag von Marion D. Kitchens
Gesendet: Mittwoch, 30. Oktober 2013 22:19
An: SDRSharp@...
Betreff: Re: AW: [SDRSharp] how to run in dongle in bypass
or direct mode?



Sigi

Are isolating caps needed between the balun and pins 4 and
5 ?? Or can I
connect the wires from the balun directly to the chip pins
??

Marion


On Wed, 30 Oct 2013 22:11:23 -0000 "siegfried jackstien"
<siegfried.jackstien@...> writes:



You only need one dongle (with r820t tuner)

The modding does add another coax input (for shortwave)
WITHOUT
loosing vhf
uhf!!!

Do NOT de-solder the caps (they send the tuner signal to




Re: Windows 8

bob johnson
 

I agree that  Symmantec is a pain and has disabled many computers. It usually comes preconfigured on most computers, and is almost impossible to completely rid the computer of it. It fits the classification of malware. I do not plan to use it in the near and far future.
 
AVG has a reputation of letting many malware and virus’ by without detection. No reason to believe that it has improved very much.
 
Of all the reasonable cost anti-malware/virus softwares, Windows Essentials has worked best for me for more than a year.
 
I also use Microsoft’s online anti-malware scan. It is also free and works great.
 
I do not plan to replace it.
 
 
 
bobbie


Re: Windows 8

bob johnson
 

but essentials will automatically disable defender and run a better scan and live protection.
 
 
and it runs with windows 8.x
 
check it out, I think you will like it.
 
 
bobbie