Date   
K3

Larry
 

I ran the 5 watt RF gain calibration test this morning from the K3
Utility.  It failed!  So i clicked on "Next" and ran the 50W calibration
test.  I had not done this test before so didn't really know what to
expect.  Well the 50W calibration level failed also, DUH!

Any suggestions before i call for an RMA?  I can get 100W out on CW most
all bands, 80 W out on a couple others.  However using FT8 the RF power
fluctuates to some extent, maybe 5 W or so on the HF bands but is really
stable on 6M using SSb mode though as the Data mode is worse and i can't
seem to tame it down.  I am suspecting that getting the transmitter
"tuned up", whatever that may entail will correct the situation.  Not
having a peak reading wattmeter it's hard to tell exactly, with the
instrument i have, what is happening on SSb although i worked the
KH1/KH7Z station on 20 and 15 SSb so it must be working to some extent.

Larry

W0OGH

comparison of the K3S vs. the IC-7610.

n9iww
 

I'd like to see the comparison of the K3S vs. the IC-7610. place the attachment in files are on group io so everyone can see it

Re: Elecraft K3S / IC-7610 comparison table

 

My fault, gang, for not noticing that the default is reply-all.

I’m over 30, now, so my mousal reflexes aren’t as fast as they used to be. With help from my teenage son, I will learn.

73,
Wayne
N6KR

On Jul 5, 2018, at 3:15 PM, Dave Sharred via Groups.Io <g3nkc=yahoo.co.uk@groups.io> wrote:

What's up with you guys, you are all replying on list, rather than off list to a personal request !!

I didn't think Wayne wanted to go public with the figures yet, but would respond to personal requests

73 Dave G3NKC



Sent from Samsung tablet


-------- Original message --------
From: N6KR <n6kr@...>
Date: 05/07/2018 06:55 (GMT+00:00)
To: Elecraft-K3@groups.io
Subject: Re: [Elecraft-K3] Elecraft K3S / IC-7610 comparison table

Hi Dave,

The latest draft of the comparison table is attached.

73,
Wayne
N6KR







On Jul 4, 2018, at 1:36 PM, Dave Cole <dave@...> wrote:

Same here, please forward!

73s and thanks,
Dave
NK7Z
https://www.nk7z.net

On 07/03/2018 09:58 PM, kd0q wrote:
Wayne,
Pleased forward the K3S v.s. IC-7610 comparison to me.
Thanks!
73, Glenn - KD��Q
On Tue, Jul 3, 2018 at 9:16 PM N6KR <n6kr@... <mailto:n6kr@...>> wrote:
In response to many questions fielded by our sales and support staff
we���ve put together a comparison of the K3S vs. the IC-7610.
While all rigs have certain strengths, the K3S has a combination of
performance, features, and form factor that provide unique benefits
to the operator, especially those who may encounter high-signal
conditions or require portability (or both, as in the case of Field
Day, DXpeditions, etc.).
The comparison table is in draft form and will continue to evolve,
so we���re not posting it on our website just yet. However, we���ll be
happy to send the current edition on request to anyone actively
weighing the tradeoffs between the K3S and other transceivers.
Please email me directly if you���re interested. I���ll be happy to
expand on information presented, whether theoretical or functional.
No doubt these discussions will help us refine the table.
73,
Wayne
N6KR




Re: Elecraft K3S / IC-7610 comparison table

Dave Sharred
 

What's up with you guys, you are all replying on list, rather than off list to a personal request !!

I didn't think Wayne wanted to go public with the figures yet, but would respond to personal requests

73 Dave G3NKC 



Sent from Samsung tablet


-------- Original message --------
From: N6KR <n6kr@...>
Date: 05/07/2018 06:55 (GMT+00:00)
To: Elecraft-K3@groups.io
Subject: Re: [Elecraft-K3] Elecraft K3S / IC-7610 comparison table

Hi Dave,

The latest draft of the comparison table is attached.

73,
Wayne
N6KR







> On Jul 4, 2018, at 1:36 PM, Dave Cole <dave@...> wrote:
>
> Same here, please forward!
>
> 73s and thanks,
> Dave
> NK7Z
> https://www.nk7z.net
>
> On 07/03/2018 09:58 PM, kd0q wrote:
>> Wayne,
>> Pleased forward the K3S v.s. IC-7610 comparison to me.
>> Thanks!
>> 73, Glenn - KD��Q
>> On Tue, Jul 3, 2018 at 9:16 PM N6KR <n6kr@... <mailto:n6kr@...>> wrote:
>>    In response to many questions fielded by our sales and support staff
>>    we���ve put together a comparison of the K3S vs. the IC-7610.
>>    While all rigs have certain strengths, the K3S has a combination of
>>    performance, features, and form factor that provide unique benefits
>>    to the operator, especially those who may encounter high-signal
>>    conditions or require portability (or both, as in the case of Field
>>    Day, DXpeditions, etc.).
>>    The comparison table is in draft form and will continue to evolve,
>>    so we���re not posting it on our website just yet. However, we���ll be
>>    happy to send the current edition on request to anyone actively
>>    weighing the tradeoffs between the K3S and other transceivers.
>>    Please email me directly if you���re interested. I���ll be happy to
>>    expand on information presented, whether theoretical or functional.
>>    No doubt these discussions will help us refine the table.
>>    73,
>>    Wayne
>>    N6KR
>
>
>




Re: Elecraft K3S / IC-7610 comparison table

n9iww
 

On Tue, Jul 3, 2018 at 09:09 pm, Paul Dulaff wrote:


I would be interested in your comparison table and data comparing the two rigs.

Re: Elecraft K3S / IC-7610 comparison table

Martin Kratoska
 

Dne 5.7.2018 v 18:12 Stan Sychev via Groups.Io napsal(a):

Hi Martin,
Can you send me that attachment, please?
I do have the same problem.
161, Stan, R7KZ
--------------------------------------------
On Thu, 7/5/18, Martin Kratoska <@OK1RR> wrote:
Subject: Re: [Elecraft-K3] Elecraft K3S / IC-7610 comparison table
To: Elecraft-K3@groups.io
Date: Thursday, July 5, 2018, 9:44 AM
It seems that this group is badly
set up to strip off attachments. I
have a
group which allows attachments and works without any
problem. So,
check the group settings!
73,
Martin,
OK1RR
Dne 5.7.2018 v 08:15
Mike Flowers napsal(a):
> I think the
groups.io group strips off attachments.  Perhaps a direct
email with an attachment will work.
>
> -- Mike Flowers, K6MKF, NCDXC -
"It's about DX!"
>
>> On Jul 4, 2018, at 11:08 PM, W2XJ
<w2xj@...>
wrote:
>>
>>
Still not seeing any attachment.
>>> On Jul 5, 2018, at 1:55 AM, N6KR
<n6kr@...>
wrote:
>>>
>>> Hi Dave,
>>>
>>> The
latest draft of the comparison table is attached.
>>>
>>>
73,
>>> Wayne
>>> N6KR
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>>
On Jul 4, 2018, at 1:36 PM, Dave Cole <dave@...>
wrote:
>>>>
>>>> Same here, please forward!
>>>>
>>>> 73s and thanks,
>>>> Dave
>>>> NK7Z
>>>> https://www.nk7z.net
>>>>
>>>>> On 07/03/2018 09:58 PM,
kd0q wrote:
>>>>> Wayne,
>>>>> Pleased forward the K3S
v.s. IC-7610 comparison to me.
>>>>> Thanks!
>>>>> 73, Glenn - KDØQ
>>>>> On Tue, Jul 3, 2018 at
9:16 PM N6KR <n6kr@...
<mailto:n6kr@...>>
wrote:
>>>>>  In response
to many questions fielded by our sales and support staff
>>>>>  we’ve put together a
comparison of the K3S vs. the IC-7610.
>>>>>  While all rigs have
certain strengths, the K3S has a combination of
>>>>>  performance, features,
and form factor that provide unique benefits
>>>>>  to the operator,
especially those who may encounter high-signal
>>>>>  conditions or require
portability (or both, as in the case of Field
>>>>>  Day, DXpeditions,
etc.).
>>>>>  The
comparison table is in draft form and will continue to
evolve,
>>>>>  so we’re
not posting it on our website just yet. However, we’ll
be
>>>>>  happy to send the
current edition on request to anyone actively
>>>>>  weighing the tradeoffs
between the K3S and other transceivers.
>>>>>  Please email me
directly if you’re interested. I’ll be happy to
>>>>>  expand on information
presented, whether theoretical or functional.
>>>>>  No doubt these
discussions will help us refine the table.
>>>>>  73,
>>>>>  Wayne
>>>>>  N6KR
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>>
>>>
>>
>>
>>
>>
>
>
>
>

Re: Elecraft K3S / IC-7610 comparison table

Stan Sychev <k6wg@...>
 

Hi Martin,

Can you send me that attachment, please?
I do have the same problem.

161, Stan, R7KZ
--------------------------------------------

On Thu, 7/5/18, Martin Kratoska <@OK1RR> wrote:

Subject: Re: [Elecraft-K3] Elecraft K3S / IC-7610 comparison table
To: Elecraft-K3@groups.io
Date: Thursday, July 5, 2018, 9:44 AM

It seems that this group is badly
set up to strip off attachments. I
have a
group which allows attachments and works without any
problem. So,
check the group settings!

73,
Martin,
OK1RR

Dne 5.7.2018 v 08:15
Mike Flowers napsal(a):
> I think the
groups.io group strips off attachments.  Perhaps a direct
email with an attachment will work.
>
> -- Mike Flowers, K6MKF, NCDXC -
"It's about DX!"
>
>> On Jul 4, 2018, at 11:08 PM, W2XJ
<w2xj@...>
wrote:
>>
>>
Still not seeing any attachment.
>>> On Jul 5, 2018, at 1:55 AM, N6KR
<n6kr@...>
wrote:
>>>
>>> Hi Dave,
>>>
>>> The
latest draft of the comparison table is attached.
>>>
>>>
73,
>>> Wayne
>>> N6KR
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>>
On Jul 4, 2018, at 1:36 PM, Dave Cole <dave@...>
wrote:
>>>>
>>>> Same here, please forward!
>>>>
>>>> 73s and thanks,
>>>> Dave
>>>> NK7Z
>>>> https://www.nk7z.net
>>>>
>>>>> On 07/03/2018 09:58 PM,
kd0q wrote:
>>>>> Wayne,
>>>>> Pleased forward the K3S
v.s. IC-7610 comparison to me.
>>>>> Thanks!
>>>>> 73, Glenn - KDØQ
>>>>> On Tue, Jul 3, 2018 at
9:16 PM N6KR <n6kr@...
<mailto:n6kr@...>>
wrote:
>>>>>  In response
to many questions fielded by our sales and support staff
>>>>>  we’ve put together a
comparison of the K3S vs. the IC-7610.
>>>>>  While all rigs have
certain strengths, the K3S has a combination of
>>>>>  performance, features,
and form factor that provide unique benefits
>>>>>  to the operator,
especially those who may encounter high-signal
>>>>>  conditions or require
portability (or both, as in the case of Field
>>>>>  Day, DXpeditions,
etc.).
>>>>>  The
comparison table is in draft form and will continue to
evolve,
>>>>>  so we’re
not posting it on our website just yet. However, we’ll
be
>>>>>  happy to send the
current edition on request to anyone actively
>>>>>  weighing the tradeoffs
between the K3S and other transceivers.
>>>>>  Please email me
directly if you’re interested. I’ll be happy to
>>>>>  expand on information
presented, whether theoretical or functional.
>>>>>  No doubt these
discussions will help us refine the table.
>>>>>  73,
>>>>>  Wayne
>>>>>  N6KR
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>>
>>>
>>
>>
>>
>>
>
>
>
>

Re: Elecraft K3S / IC-7610 comparison table

Martin Kratoska
 

It seems that this group is badly set up to strip off attachments. I have a group which allows attachments and works without any problem. So, check the group settings!

73,
Martin, OK1RR

Dne 5.7.2018 v 08:15 Mike Flowers napsal(a):

I think the groups.io group strips off attachments. Perhaps a direct email with an attachment will work.
-- Mike Flowers, K6MKF, NCDXC - "It's about DX!"

On Jul 4, 2018, at 11:08 PM, W2XJ <w2xj@...> wrote:

Still not seeing any attachment.
On Jul 5, 2018, at 1:55 AM, N6KR <n6kr@...> wrote:

Hi Dave,

The latest draft of the comparison table is attached.

73,
Wayne
N6KR







On Jul 4, 2018, at 1:36 PM, Dave Cole <dave@...> wrote:

Same here, please forward!

73s and thanks,
Dave
NK7Z
https://www.nk7z.net

On 07/03/2018 09:58 PM, kd0q wrote:
Wayne,
Pleased forward the K3S v.s. IC-7610 comparison to me.
Thanks!
73, Glenn - KDØQ
On Tue, Jul 3, 2018 at 9:16 PM N6KR <n6kr@... <mailto:n6kr@...>> wrote:
In response to many questions fielded by our sales and support staff
we’ve put together a comparison of the K3S vs. the IC-7610.
While all rigs have certain strengths, the K3S has a combination of
performance, features, and form factor that provide unique benefits
to the operator, especially those who may encounter high-signal
conditions or require portability (or both, as in the case of Field
Day, DXpeditions, etc.).
The comparison table is in draft form and will continue to evolve,
so we’re not posting it on our website just yet. However, we’ll be
happy to send the current edition on request to anyone actively
weighing the tradeoffs between the K3S and other transceivers.
Please email me directly if you’re interested. I’ll be happy to
expand on information presented, whether theoretical or functional.
No doubt these discussions will help us refine the table.
73,
Wayne
N6KR






Re: Elecraft K3S / IC-7610 comparison table

Mike Flowers
 

I think the groups.io group strips off attachments. Perhaps a direct email with an attachment will work.

-- Mike Flowers, K6MKF, NCDXC - "It's about DX!"

On Jul 4, 2018, at 11:08 PM, W2XJ <w2xj@...> wrote:

Still not seeing any attachment.
On Jul 5, 2018, at 1:55 AM, N6KR <n6kr@...> wrote:

Hi Dave,

The latest draft of the comparison table is attached.

73,
Wayne
N6KR







On Jul 4, 2018, at 1:36 PM, Dave Cole <dave@...> wrote:

Same here, please forward!

73s and thanks,
Dave
NK7Z
https://www.nk7z.net

On 07/03/2018 09:58 PM, kd0q wrote:
Wayne,
Pleased forward the K3S v.s. IC-7610 comparison to me.
Thanks!
73, Glenn - KDØQ
On Tue, Jul 3, 2018 at 9:16 PM N6KR <n6kr@... <mailto:n6kr@...>> wrote:
In response to many questions fielded by our sales and support staff
we’ve put together a comparison of the K3S vs. the IC-7610.
While all rigs have certain strengths, the K3S has a combination of
performance, features, and form factor that provide unique benefits
to the operator, especially those who may encounter high-signal
conditions or require portability (or both, as in the case of Field
Day, DXpeditions, etc.).
The comparison table is in draft form and will continue to evolve,
so we’re not posting it on our website just yet. However, we’ll be
happy to send the current edition on request to anyone actively
weighing the tradeoffs between the K3S and other transceivers.
Please email me directly if you’re interested. I’ll be happy to
expand on information presented, whether theoretical or functional.
No doubt these discussions will help us refine the table.
73,
Wayne
N6KR






Re: Elecraft K3S / IC-7610 comparison table

W2XJ
 

Still not seeing any attachment.

On Jul 5, 2018, at 1:55 AM, N6KR <n6kr@...> wrote:

Hi Dave,

The latest draft of the comparison table is attached.

73,
Wayne
N6KR







On Jul 4, 2018, at 1:36 PM, Dave Cole <dave@...> wrote:

Same here, please forward!

73s and thanks,
Dave
NK7Z
https://www.nk7z.net

On 07/03/2018 09:58 PM, kd0q wrote:
Wayne,
Pleased forward the K3S v.s. IC-7610 comparison to me.
Thanks!
73, Glenn - KDØQ
On Tue, Jul 3, 2018 at 9:16 PM N6KR <n6kr@... <mailto:n6kr@...>> wrote:
In response to many questions fielded by our sales and support staff
we’ve put together a comparison of the K3S vs. the IC-7610.
While all rigs have certain strengths, the K3S has a combination of
performance, features, and form factor that provide unique benefits
to the operator, especially those who may encounter high-signal
conditions or require portability (or both, as in the case of Field
Day, DXpeditions, etc.).
The comparison table is in draft form and will continue to evolve,
so we’re not posting it on our website just yet. However, we’ll be
happy to send the current edition on request to anyone actively
weighing the tradeoffs between the K3S and other transceivers.
Please email me directly if you’re interested. I’ll be happy to
expand on information presented, whether theoretical or functional.
No doubt these discussions will help us refine the table.
73,
Wayne
N6KR




Re: Elecraft K3S / IC-7610 comparison table

 

Hi Dave,

The latest draft of the comparison table is attached.

73,
Wayne
N6KR

On Jul 4, 2018, at 1:36 PM, Dave Cole <dave@...> wrote:

Same here, please forward!

73s and thanks,
Dave
NK7Z
https://www.nk7z.net

On 07/03/2018 09:58 PM, kd0q wrote:
Wayne,
Pleased forward the K3S v.s. IC-7610 comparison to me.
Thanks!
73, Glenn - KDØQ
On Tue, Jul 3, 2018 at 9:16 PM N6KR <n6kr@... <mailto:n6kr@...>> wrote:
In response to many questions fielded by our sales and support staff
we’ve put together a comparison of the K3S vs. the IC-7610.
While all rigs have certain strengths, the K3S has a combination of
performance, features, and form factor that provide unique benefits
to the operator, especially those who may encounter high-signal
conditions or require portability (or both, as in the case of Field
Day, DXpeditions, etc.).
The comparison table is in draft form and will continue to evolve,
so we’re not posting it on our website just yet. However, we’ll be
happy to send the current edition on request to anyone actively
weighing the tradeoffs between the K3S and other transceivers.
Please email me directly if you’re interested. I’ll be happy to
expand on information presented, whether theoretical or functional.
No doubt these discussions will help us refine the table.
73,
Wayne
N6KR

Re: Elecraft K3S / IC-7610 comparison table

 

Hi Rodrigo,

The latest draft of the comparison table is attached.

73,
Wayne
N6KR

On Jul 4, 2018, at 2:13 PM, Rodrigo Ferreira <ct1bxt@...> wrote:

Hi Wayne,


i would like to have also the comparing.


Best 73

Rodrigo

ct1bxt




Re: Elecraft K3S / IC-7610 comparison table

 

Hi Ned,

The latest draft of the comparison table is attached. Looking forward to your comments.

73,
Wayne
N6KR

On Jul 4, 2018, at 7:47 PM, Ned Mountain WC4X <ned.mountain@...> wrote:

Wayne,

Please e mail me the comparison data.

Thanks,
Ned
WC4X

Re: Elecraft K3S / IC-7610 comparison table

Rodrigo Ferreira
 

Hi Wayne,


i would like to have also the comparing.


Best 73

Rodrigo

ct1bxt

Re: Elecraft K3S / IC-7610 comparison table

Ned Mountain WC4X
 

Wayne,

Please e mail me the comparison data.

Thanks,
Ned
WC4X

Re: Elecraft K3S / IC-7610 comparison table

Dave Cole
 

Same here, please forward!

73s and thanks,
Dave
NK7Z
https://www.nk7z.net

On 07/03/2018 09:58 PM, kd0q wrote:
Wayne,
Pleased forward the K3S v.s. IC-7610 comparison to me.
Thanks!
73, Glenn - KDØQ
On Tue, Jul 3, 2018 at 9:16 PM N6KR <n6kr@... <mailto:n6kr@...>> wrote:
In response to many questions fielded by our sales and support staff
we’ve put together a comparison of the K3S vs. the IC-7610.
While all rigs have certain strengths, the K3S has a combination of
performance, features, and form factor that provide unique benefits
to the operator, especially those who may encounter high-signal
conditions or require portability (or both, as in the case of Field
Day, DXpeditions, etc.).
The comparison table is in draft form and will continue to evolve,
so we’re not posting it on our website just yet. However, we’ll be
happy to send the current edition on request to anyone actively
weighing the tradeoffs between the K3S and other transceivers.
Please email me directly if you’re interested. I’ll be happy to
expand on information presented, whether theoretical or functional.
No doubt these discussions will help us refine the table.
73,
Wayne
N6KR

Re: Elecraft K3S / IC-7610 comparison table

Paul Dulaff
 

Wayne

Thanks for the quick response. I didn't get an attachment to this email.

Perhaps resend ?

Thanks

Paul Dulaff
W2NMI

----- Original Message -----
From: N6KR <n6kr@...>
To: Elecraft-K3@groups.io
Sent: Wed, 04 Jul 2018 00:53:36 -0400 (EDT)
Subject: Re: [Elecraft-K3] Elecraft K3S / IC-7610 comparison table

Hi Paul,

Attached is the current draft. Looking forward to your comments.

73,
Wayne
N6KR






On Jul 3, 2018, at 8:27 PM, Paul Dulaff <pdulaff@...> wrote:

Wayne

I have interest in the IC-7610, but would be interested in your comparison table and data comparing the two rigs.

Best 73's

Paul Dulaff
W2NMI

----- Original Message -----
From: N6KR <n6kr@...>
To: Elecraft-K3@groups.io
Sent: Tue, 03 Jul 2018 22:16:54 -0400 (EDT)
Subject: [Elecraft-K3] Elecraft K3S / IC-7610 comparison table

In response to many questions fielded by our sales and support staff we���ve put together a comparison of the K3S vs. the IC-7610.

While all rigs have certain strengths, the K3S has a combination of performance, features, and form factor that provide unique benefits to the operator, especially those who may encounter high-signal conditions or require portability (or both, as in the case of Field Day, DXpeditions, etc.).

The comparison table is in draft form and will continue to evolve, so we���re not posting it on our website just yet. However, we���ll be happy to send the current edition on request to anyone actively weighing the tradeoffs between the K3S and other transceivers.

Please email me directly if you���re interested. I���ll be happy to expand on information presented, whether theoretical or functional. No doubt these discussions will help us refine the table.

73,
Wayne
N6KR





Re: Elecraft K3S / IC-7610 comparison table

 

It does, but their preselector is still 10 to 100 times broader than the narrowband crystal filters in the K3S. The preselector also uses numerous relays that can be heard switching as you tune the VFO.

Current state of the art design still requires crystal filtering to protect the ADC from close-in signals while maintaining high sensitivity.

73,
Wayne
N6KR

On Jul 4, 2018, at 7:51 AM, dalej via Groups.Io <dalej2=mac.com@groups.io> wrote:

I think the 7610 uses extra band pass filtering ahead of the dsp.

I wouldn’t give up my K3s for one.

73
Dale, k9vuj


On 04, Jul 2018, at 9:42, mikerodgerske5gbc via Groups.Io <mikerodgerske5gbc=yahoo.com@groups.io> wrote:

Does the 7610 suffer the same problems as the 7300 with close by transmitters or have they addressed that?

73
Mike R

7!
Absolutely Awesome

On Jul 4, 2018, at 9:34 AM, dalej via Groups.Io <dalej2=mac.com@groups.io> wrote:

When I’ve asked the question blocking dynamic range in other forums they always said the two kinds of receivers can’t be tested the same way :).

Guess that explains it.

Tnx Joe

Dale, K9VUJ




On 04, Jul 2018, at 8:27, Joe Subich, W4TV <lists@...> wrote:


On 2018-07-04 4:02 AM, dalej via Groups.Io wrote:
I’m interested in this noise power ratio test that some use to
evaluate receivers. How does that fit in with the K3 ?
Noise power testing *can* be extremely confusing when comparing
direct sampling "receivers" like the Flex or IC-7851/7610/7300
with IF based SDR receivers like the K3.

In practice, proponents of noise power testing reduce the noise
power level until the ADC of the direct sampling receiver no
longer goes into overflow and then measure the IMD products
(increase in noise floor in the "notch" region). With IF/filter
based devices the noise power is not reduced. Effectively, the
two receiver technologies are being tested at different signal
levels.

The direct conversion receiver is being tested at maximum
interfering signal level but not maximum sensitivity while
the IF/Filter receiver is being tested at maximum sensitivity.
None of the tested direct conversion SDRs are capable of 100+
dB "dynamic range" while simultaneously maintaining a MDS of
~ -140 dBm unlike a IF/filter receiver (either analog like the
K2 or DSP like the K3/K3S).

73,

... Joe, W4TV


On 2018-07-04 4:02 AM, dalej via Groups.Io wrote:
I’m interested in this noise power ratio test that some use to evaluate receivers. How does that fit in with the K3 ?
Dale, K9VUJ
On 03, Jul 2018, at 21:16, N6KR <n6kr@...> wrote:
In response to many questions fielded by our sales and support staff we’ve put together a comparison of the K3S vs. the IC-7610.
While all rigs have certain strengths, the K3S has a combination of performance, features, and form factor that provide unique benefits to the operator, especially those who may encounter high-signal conditions or require portability (or both, as in the case of Field Day, DXpeditions, etc.).
The comparison table is in draft form and will continue to evolve, so we’re not posting it on our website just yet. However, we’ll be happy to send the current edition on request to anyone actively weighing the tradeoffs between the K3S and other transceivers.
Please email me directly if you’re interested. I’ll be happy to expand on information presented, whether theoretical or functional. No doubt these discussions will help us refine the table.
73,
Wayne
N6KR





Re: Elecraft K3S / IC-7610 comparison table

Joe Subich, W4TV
 

IIRC, the IC7610 has a bandpass filter ahead of the ADC whereas the 7300
has no BPF.

The 7610 will have the same problem as the 7300 if the close by
transmitter is in band. It will not have the same problem if the close
by transmitter is on another band or outside the BPF for the current
receive band.

This is the issue with direct conversion SDR design that the proponents
of direct conversion do not want to address. Without filtering to
protect the ADC, the direct conversion receiver sees *ALL* RF sources
from DC to light - a couple 50 KW AM broadcast signals will often wipe
out 160 meters, for example, particularly if they are near the top of
the broadcast band where BPFs are not effective.

Flex have tried to address this by using *SEVEN POLE* BPFs in the 6600
for the primary (160/80/40/20/15/10 meter) bands, but their receivers
still have significantly different MDS depending on the preamp in use
(or attenuator).

73,

... Joe, W4TV

On 2018-07-04 10:51 AM, dalej via Groups.Io wrote:
I think the 7610 uses extra band pass filtering ahead of the dsp.
I wouldn’t give up my K3s for one.
73
Dale, k9vuj
On 04, Jul 2018, at 9:42, mikerodgerske5gbc via Groups.Io <mikerodgerske5gbc=yahoo.com@groups.io> wrote:
Does the 7610 suffer the same problems as the 7300 with close by transmitters or have they addressed that?
73
Mike R
7!
Absolutely Awesome
On Jul 4, 2018, at 9:34 AM, dalej via Groups.Io <dalej2=mac.com@groups.io <mailto:dalej2=mac.com@groups.io>> wrote:

When I’ve asked the question blocking dynamic range in other forums they always said the two kinds of receivers can’t be tested the same way :).

Guess that explains it.

Tnx Joe

Dale, K9VUJ




On 04, Jul 2018, at 8:27, Joe Subich, W4TV <lists@... <mailto:lists@...>> wrote:


On 2018-07-04 4:02 AM, dalej via Groups.Io wrote:
I’m interested in this noise power ratio test that some use to
evaluate receivers. How does that fit in with the K3 ?
Noise power testing *can* be extremely confusing when comparing
direct sampling "receivers" like the Flex or IC-7851/7610/7300
with IF based SDR receivers like the K3.

In practice, proponents of noise power testing reduce the noise
power level until the ADC of the direct sampling receiver no
longer goes into overflow and then measure the IMD products
(increase in noise floor in the "notch" region). With IF/filter
based devices the noise power is not reduced. Effectively, the
two receiver technologies are being tested at different signal
levels.

The direct conversion receiver is being tested at maximum
interfering signal level but not maximum sensitivity while
the IF/Filter receiver is being tested at maximum sensitivity.
None of the tested direct conversion SDRs are capable of 100+
dB "dynamic range" while simultaneously maintaining a MDS of
~ -140 dBm unlike a IF/filter receiver (either analog like the
K2 or DSP like the K3/K3S).

73,

... Joe, W4TV


On 2018-07-04 4:02 AM, dalej via Groups.Io wrote:
I’m interested in this noise power ratio test that some use to evaluate receivers. How does that fit in with the K3 ?
Dale, K9VUJ
On 03, Jul 2018, at 21:16, N6KR <n6kr@... <mailto:n6kr@...>> wrote:
In response to many questions fielded by our sales and support staff we’ve put together a comparison of the K3S vs. the IC-7610.
While all rigs have certain strengths, the K3S has a combination of performance, features, and form factor that provide unique benefits to the operator, especially those who may encounter high-signal conditions or require portability (or both, as in the case of Field Day, DXpeditions, etc.).
The comparison table is in draft form and will continue to evolve, so we’re not posting it on our website just yet. However, we’ll be happy to send the current edition on request to anyone actively weighing the tradeoffs between the K3S and other transceivers.
Please email me directly if you’re interested. I’ll be happy to expand on information presented, whether theoretical or functional. No doubt these discussions will help us refine the table.
73,
Wayne
N6KR





Re: Elecraft K3S / IC-7610 comparison table

WA3RSL
 

Cant find the attachment.

Frank WA3RSL