Date   

Re: Filter recommendations for K3/100 w/sub-receiver;SSB op + monitor CW, RTTY

blueyondermining
 

Thanks for all who responded above as well as Mike, KE5GBC who emailed me directly with some audio MP3s recorded with the 1.8, 1.5 and even a 1.0 khz filter in play.

Listening to the MP3s a few times I am now sold on having the matched 2.7s as well as a pair of 1.8s in the main and sub for SSB. I forgot to mention that I'll be trying out diversity reception at times hence the need for two of each filters for best results there.

As for CW and data I think a single 400hz filter will more than suffice in my situation (even if I decide to take up RTTY operating for the first time). My main use will be for decoding beacon callsigns and SWLing digital qsos occasionally.

While it might seem prudent to start out with a bare bones kit and add filters later on I reason that it'll be easier to load it up with what I'll need now while I build it; especially since it'll be fully packed with the sub receiver and most of the available options.

I also heard or read the other day that Elecraft plans to add the ability of displaying the cw/data readout on the P3 screen in the near future---won't that be neat!


73 and c u on the bands, Jeff NH7RO

--- In Elecraft_K3@..., "wa9fvp" <willcoele@...> wrote:

I went with the stock SSB filter. The DSP can vary the bandwidth lower than 1.8 so why get a narrow SSB filter? I always felt that narrow SSB filters sound tinny and that it degrades human speech. If someone is so close in frequency that they splatter into you passband, it doesn't matter how narrow the filter is, it won't improve reception.

I purchased the FM and AM filters. For data and CW modes, I ordered the 400 and 250 Hz filters. Except for key clicks bleeding into the passband a CW signal won't splatter. A tighter filter will improve reception.


--- In Elecraft_K3@..., "blueyondermining" <cathrowinternational@> wrote:

I'll soon be ordering my K3/100 kit that I plan to load up with options including the sub-receiver, xverter interface, ATU and so on.

I am strictly a phone op, SSB 98%, maybe the other 2% is spent on 10 meter FM. I plan to go with the matched 2.7 filters from Elecraft and then order all of my other filters directly from Inrad so as to get their 5-10% discount at the time of purchase. (One
of them will be the 13khz FM filter so I can still operate 10m FM)

My main question; I'm wondering which other filters I'm best off with for narrow SSB as well as CW beacon monitoring and decoding RTTY (just realized I'll be able to read CW and RTTY via the K3's readout display--nifty feature).

I'm considering both the 2.1 and 1.5 filters both both main and sub receivers for SSB, unless that's total overkill. I may want to also consider the 1.8 in lieu of either as an alternative--I don't want to go overboard as these add up quickly.

Does the 1.5 Inrad audio sound really "pinched?"

If I go with the 1.5, 2.1 and 2.7 in the main recvr they'd be 600 cycles apart for a smooth transition in bandwidths; but maybe only one narrow SSB filter in the sub will suffice; I'll be listening on split operations or perhaps tuning around there so perhaps the sub is not as critical?


What have most of you other SSB ops found to work well for contesting and chasing DX (my main interests)?

What is a good filter for copying CW beacons as well as occasional RTTY swling (I may start to dabble in RTTY with the features available to me in the K3), please? I would think narrow as possible, especially for precise tuning of beacons but I'm a bit clueless when it comes to CW in the first place.

Any help will be much appreciated; I'm almost ready to place my orders with Elecraft and Inrad. 73, Jeff NH7RO


Re: Filter recommendations for K3/100 w/sub-receiver;SSB op + monitor CW, RTTY

wa9fvp <willcoele@...>
 

I went with the stock SSB filter. The DSP can vary the bandwidth lower than 1.8 so why get a narrow SSB filter? I always felt that narrow SSB filters sound tinny and that it degrades human speech. If someone is so close in frequency that they splatter into you passband, it doesn't matter how narrow the filter is, it won't improve reception.

I purchased the FM and AM filters. For data and CW modes, I ordered the 400 and 250 Hz filters. Except for key clicks bleeding into the passband a CW signal won't splatter. A tighter filter will improve reception.

--- In Elecraft_K3@..., "blueyondermining" <cathrowinternational@...> wrote:

I'll soon be ordering my K3/100 kit that I plan to load up with options including the sub-receiver, xverter interface, ATU and so on.

I am strictly a phone op, SSB 98%, maybe the other 2% is spent on 10 meter FM. I plan to go with the matched 2.7 filters from Elecraft and then order all of my other filters directly from Inrad so as to get their 5-10% discount at the time of purchase. (One
of them will be the 13khz FM filter so I can still operate 10m FM)

My main question; I'm wondering which other filters I'm best off with for narrow SSB as well as CW beacon monitoring and decoding RTTY (just realized I'll be able to read CW and RTTY via the K3's readout display--nifty feature).

I'm considering both the 2.1 and 1.5 filters both both main and sub receivers for SSB, unless that's total overkill. I may want to also consider the 1.8 in lieu of either as an alternative--I don't want to go overboard as these add up quickly.

Does the 1.5 Inrad audio sound really "pinched?"

If I go with the 1.5, 2.1 and 2.7 in the main recvr they'd be 600 cycles apart for a smooth transition in bandwidths; but maybe only one narrow SSB filter in the sub will suffice; I'll be listening on split operations or perhaps tuning around there so perhaps the sub is not as critical?


What have most of you other SSB ops found to work well for contesting and chasing DX (my main interests)?

What is a good filter for copying CW beacons as well as occasional RTTY swling (I may start to dabble in RTTY with the features available to me in the K3), please? I would think narrow as possible, especially for precise tuning of beacons but I'm a bit clueless when it comes to CW in the first place.

Any help will be much appreciated; I'm almost ready to place my orders with Elecraft and Inrad. 73, Jeff NH7RO


Re: [Elecraft_K3] Filter recommendations for K3/100 w/sub-receiver;SSB op + monitor CW, RTTY

Joe Subich, W4TV
 

I'm considering both the 2.1 and 1.5 filters both both main and sub
receivers for SSB, unless that's total overkill. I may want to also
consider the 1.8 in lieu of either as an alternative--I don't want to
go overboard as these add up quickly.
That is total overkill. I would recommend only the 1.8 for narrow SSB.
I've found 1.5 KHz too tight and although it works, the 1.8 is easier
to use. useful in more situations and provides 99% of the benefits of
the 1.5 KHz filter.

What is a good filter for copying CW beacons as well as occasional
RTTY swling (I may start to dabble in RTTY with the features
available to me in the K3), please?
I'd recommend either the Inrad "400 Hz" or "500 Hz" 8-pole filters.
The 400 Hz filter will provide slightly better RTTY performance in
crowded band conditions where the 500 Hz filter will be slightly more
comfortable for general CW operation. For a serious CW operator the
combination of the 400 Hz and Elecraft 200 Hz filters is a good choice
while a serious RTTY operator might opt for the INRAD 500/250 Hz pair.

After several years with K3 s/n 622 and 1450, I'm comfortable with the
13 KHz, 2.7 KHz, 1.8 KHz, 400 Hz, 200 Hz recommendation for one who is
more interested in CW than RTTY and 13 KHz, 2.7 KHz, 1.8 KHz, 500 Hz
(8 pole), 250 Hz recommendation for a serious RTTY operator. I only
wish Elecraft would officially allow using the 13 KHz filter for AM
and ESSB transmit in addition to FM.

73,

... Joe, W4TV

On 6/1/2011 6:38 PM, blueyondermining wrote:
I'll soon be ordering my K3/100 kit that I plan to load up with
options including the sub-receiver, xverter interface, ATU and so
on.

I am strictly a phone op, SSB 98%, maybe the other 2% is spent on 10
meter FM. I plan to go with the matched 2.7 filters from Elecraft
and then order all of my other filters directly from Inrad so as to
get their 5-10% discount at the time of purchase. (One of them will
be the 13khz FM filter so I can still operate 10m FM)

My main question; I'm wondering which other filters I'm best off with
for narrow SSB as well as CW beacon monitoring and decoding RTTY
(just realized I'll be able to read CW and RTTY via the K3's readout
display--nifty feature).

I'm considering both the 2.1 and 1.5 filters both both main and sub
receivers for SSB, unless that's total overkill. I may want to also
consider the 1.8 in lieu of either as an alternative--I don't want to
go overboard as these add up quickly.

Does the 1.5 Inrad audio sound really "pinched?"

If I go with the 1.5, 2.1 and 2.7 in the main recvr they'd be 600
cycles apart for a smooth transition in bandwidths; but maybe only
one narrow SSB filter in the sub will suffice; I'll be listening on
split operations or perhaps tuning around there so perhaps the sub is
not as critical?


What have most of you other SSB ops found to work well for contesting
and chasing DX (my main interests)?

What is a good filter for copying CW beacons as well as occasional
RTTY swling (I may start to dabble in RTTY with the features
available to me in the K3), please? I would think narrow as
possible, especially for precise tuning of beacons but I'm a bit
clueless when it comes to CW in the first place.

Any help will be much appreciated; I'm almost ready to place my
orders with Elecraft and Inrad. 73, Jeff NH7RO



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

Yahoo! Groups Links



Filter recommendations for K3/100 w/sub-receiver;SSB op + monitor CW, RTTY

blueyondermining
 

I'll soon be ordering my K3/100 kit that I plan to load up with options including the sub-receiver, xverter interface, ATU and so on.

I am strictly a phone op, SSB 98%, maybe the other 2% is spent on 10 meter FM. I plan to go with the matched 2.7 filters from Elecraft and then order all of my other filters directly from Inrad so as to get their 5-10% discount at the time of purchase. (One
of them will be the 13khz FM filter so I can still operate 10m FM)

My main question; I'm wondering which other filters I'm best off with for narrow SSB as well as CW beacon monitoring and decoding RTTY (just realized I'll be able to read CW and RTTY via the K3's readout display--nifty feature).

I'm considering both the 2.1 and 1.5 filters both both main and sub receivers for SSB, unless that's total overkill. I may want to also consider the 1.8 in lieu of either as an alternative--I don't want to go overboard as these add up quickly.

Does the 1.5 Inrad audio sound really "pinched?"

If I go with the 1.5, 2.1 and 2.7 in the main recvr they'd be 600 cycles apart for a smooth transition in bandwidths; but maybe only one narrow SSB filter in the sub will suffice; I'll be listening on split operations or perhaps tuning around there so perhaps the sub is not as critical?


What have most of you other SSB ops found to work well for contesting and chasing DX (my main interests)?

What is a good filter for copying CW beacons as well as occasional RTTY swling (I may start to dabble in RTTY with the features available to me in the K3), please? I would think narrow as possible, especially for precise tuning of beacons but I'm a bit clueless when it comes to CW in the first place.

Any help will be much appreciated; I'm almost ready to place my orders with Elecraft and Inrad. 73, Jeff NH7RO


Re: [Elecraft_K3] K3 - Kit build observations for comment

Dave Sharred
 

Some good comments and opinions about choices of filters, That will help prospective purchasers decide.

 

We elected for 8 pole 400Hz CW filters;   in addition to the 2.7Khz SSB filter we got a 2.1KHz one as well.

 

Not really interested in data modes, so figured that was enough.

 

We matched our filters on the 2nd RX’s too, since we do envisage some full diversity.

 

By the way Moe  (and anyone else still considering a purchase) – remember that filter switches to the next narrowest one automatically, when you wind the bandwidth down. This is a neat feature in my books.  It was emphasised before; these are roofing filters too!

 

73 and enjoy your purchase

 

Dave

G3NKC

 

 

From: Elecraft_K3@... [mailto:Elecraft_K3@...] On Behalf Of Maurice Farissier
Sent: 01 June 2011 14:30
To: Elecraft_K3@...
Subject: RE: [Elecraft_K3] K3 - Kit build observations for comment

 

 

Thanks Dave !

 

 I’ll be buying a new kit  K3/100 next month after payday.  I am still up in the air about what filters I’ll be going to get.  Any recommendation – 90% CW, 5% RTTY, 5% SSB, all light contest at times. 

I’m excited as this is the first rig in 20 years since my last TS 940 AT.  

 

De KA1S, Moe.

 

 

 


From: Elecraft_K3@... [mailto:Elecraft_K3@...] On Behalf Of Dave Sharred
Sent: Wednesday, June 01, 2011 7:35 AM
To: Elecraft_K3@...
Subject: RE: [Elecraft_K3] K3 - Kit build observations for comment

 

 

HI Moe;

 

You asked :

Just wondering how long did it take to build the units..  ??

 

I saw quoted 10 hours; and I think that was about right for our 1st one. We were methodical; and actually worked as a pair - one with the instructions, the other doing the work.  2 is definitely better that one I think; I am certain 1 person would be slower.  The 2nd is coming on much faster; we just need to reconvene for the 2nd RX and amp; which will take maybe 2 hours.

73

 

Dave

G3NKC

 


Re: K3 Autonotch

wa9fvp <willcoele@...>
 

I use the manual notch but prefer the auto notch. It's faster you don't have to tune it and if the frequency changes, it readjust to the new heterodyne. When turned on, I don't like the disortion it introduces. My IC-7000 doesn't distort the audio and The IC-746 (non pro), which had an audio based DSP, never did it. I sold my 746 when I purchased my K3. I really like the K3 and I think it's a great radio. I hope that Elecraft will fix the problem and make the new DSP software load available.

--- In Elecraft_K3@..., william conkling <bconk75@...> wrote:

Hold the button in for a second to activate the 'manual' notch. Beware,
this is a much deeper notch but you can put it anywhere.

..bc. nr4c
On May 31, 2011 5:01 PM, "wa9fvp" <willcoele@...> wrote:
I'm still having problems with the K3 auto notch. When ever I use it to
remove a heterodyne in SSB mode, it distorts the voice reception. It appears
that the auto notch converges on the sinusoidal elements of speech. I
recorded myself saying "hello" on another transceiver and set up a test
where I receive it on the K3. I played it over and over. You can clearly
hear the distortion in my voice recording with the auto notch turned on. It
doesn't matter if there's a heterodyne or not. Its worse with a heterodyne
because, along with the distortion, I also hear ringing embedded in my
voice. The ringing frequency is the same as the heterodyne frequency.

It would be nice if there were adjustments for the auto notch that are
similar to the NR adjustments.


Re: K3/SDR-14 quad receiver.

wa9fvp <willcoele@...>
 

On the SDR-14 there is a comport but I don't use it. However I do use the comport in conjunction with the SpectraVue software to control the K3. I prefer it over the P3. The SDR-14 can span the whole band and then some. I can also use it to monitor two other frequencies within the K3's IF bandpass. You can't do that with the P3.

According to the manual the SDR-14 serial port is for future use but there was never any software written to support it. I should have asked Moe Wheatley about that at Dayton but I forgot. You can reach him on the SDR-14 Yahoo Groups.

--- In Elecraft_K3@..., Hulen Smith <clay1952@...> wrote:

I'm interested in comments and suggestions in regard to those of you who are using your K3 with the RFSpace SDR-14. I didn't realized the comport on the SDR-14 was functional. Is this correct?

Thanks
Hulen
K5HCS




On May 15, 2011, at 12:04 PM, wa9fvp wrote:


In message #10746 I mentioned using the SDR-14 from RFSpace with my K3. Last night I tried using the dual receive capabilities of the SDR-14 and I was able to receive 3 frequencies at one on the same band. The K3 was tuned to an SSB signal and the SDR-14 was receiving a CW on another frequency and SSB on a third frequency. If my K3 had a second receiver, I could listen to 4 frequencies at one!

The SDR-14 was connected to the K3's IF output and the SpectraVue software supports the K3. The software displays the K3 frequency on the waterfall display and when I point click on the waterfall the K3 changes to the new frequency. The SDR-14 is locked to the K3's IF frequency.

The SpectraVue software has another mode where you can setup two separate receivers and the K3 stays on the same frequency. Then you can move two receiver filters across the 190 KHz spectrum and demodulate the signals separately feeding them to the left and right audio channels on the computer.

I don't know why someone would need to monitor 3 or 4 frequencies at once but I'm sure, for some reason, someone would use it during a contest.



Re: [Elecraft_K3] K3 - Kit build observations for comment

Ed Gilliland <w5tm@...>
 

Good.
 
Do you want me to send you the pictures we took in Tennessee?
 
Gil

----- Original Message -----
Sent: Wednesday, June 01, 2011 11:11 AM
Subject: Re: [Elecraft_K3] K3 - Kit build observations for comment

 

Moe,
 
I'd second this. I built a K3/100.  I lost count after eight hours due to interruptions, and such. I worked late at night when tired. I did not install a 2nd receiver, but put in some other goodies.
 
I double checked, and even triple checked things at times due to having old eyes. I told people it seemed to take about 24 hours of time. Go slow. You will be glad you did when it comes up working. 
 
We used to have a saying at work- "Why is there never time to do things right the first time, but always time to correct the mistakes the second time?"  Making a mistake the first time can be costly as well.
 
Dick, n0ce.
 
 
 
----- Original Message -----
Sent: Wednesday, June 01, 2011 10:13 AM
Subject: Re: [Elecraft_K3] K3 - Kit build observations for comment

 

Moe -

I bought mine at Dayton, it arrived the following Thursday and was on the air 30 hours later.  I really took my time... and joined my wife for a couple of social obligations, in addition to eating all my meals with her.  No crumbs in the rig that way. 

With so many filter options it can be hard to decide.  MOST users I have heard from indicate that the 400Hz filter is sufficient for ALMOST all CW challenges... and if you do only about 5% SSB the 2.7 kHz should be just fine.  I also got the 1 kHz filter to make tuning the band on CW a bit easier.  I don't own a mic, so you know where you can find me on the bands.  I have a friend who is a very serious RTTY DXer and he says there may be times when the 200 Hz filter would be helpful.

Enjoy,

Dave
K9FN



On Wed, Jun 1, 2011 at 9:30 AM, Maurice Farissier <mauricef@...> wrote:
 

Thanks Dave !

 

 I’ll be buying a new kit  K3/100 next month after payday.  I am still up in the air about what filters I’ll be going to get.  Any recommendation – 90% CW, 5% RTTY, 5% SSB, all light contest at times. 

I’m excited as this is the first rig in 20 years since my last TS 940 AT.  

 

De KA1S, Moe.

 

 

 


From: Elecraft_K3@... [mailto:Elecraft_K3@...] On Behalf Of Dave Sharred
Sent: Wednesday, June 01, 2011 7:35 AM

Subject: RE: [Elecraft_K3] K3 - Kit build observations for comment

 

 

HI Moe;

 

You asked :

Just wondering how long did it take to build the units..  ??

 

I saw quoted 10 hours; and I think that was about right for our 1st one. We were methodical; and actually worked as a pair - one with the instructions, the other doing the work.  2 is definitely better that one I think; I am certain 1 person would be slower.  The 2nd is coming on much faster; we just need to reconvene for the 2nd RX and amp; which will take maybe 2 hours.

73

 

Dave

G3NKC

 



Re: [Elecraft_K3] K3 - Kit build observations for comment

Richard Fjeld <rpfjeld@...>
 

Moe,
 
I'd second this. I built a K3/100.  I lost count after eight hours due to interruptions, and such. I worked late at night when tired. I did not install a 2nd receiver, but put in some other goodies.
 
I double checked, and even triple checked things at times due to having old eyes. I told people it seemed to take about 24 hours of time. Go slow. You will be glad you did when it comes up working. 
 
We used to have a saying at work- "Why is there never time to do things right the first time, but always time to correct the mistakes the second time?"  Making a mistake the first time can be costly as well.
 
Dick, n0ce.
 
 
 

----- Original Message -----
Sent: Wednesday, June 01, 2011 10:13 AM
Subject: Re: [Elecraft_K3] K3 - Kit build observations for comment

 

Moe -

I bought mine at Dayton, it arrived the following Thursday and was on the air 30 hours later.  I really took my time... and joined my wife for a couple of social obligations, in addition to eating all my meals with her.  No crumbs in the rig that way. 

With so many filter options it can be hard to decide.  MOST users I have heard from indicate that the 400Hz filter is sufficient for ALMOST all CW challenges... and if you do only about 5% SSB the 2.7 kHz should be just fine.  I also got the 1 kHz filter to make tuning the band on CW a bit easier.  I don't own a mic, so you know where you can find me on the bands.  I have a friend who is a very serious RTTY DXer and he says there may be times when the 200 Hz filter would be helpful.

Enjoy,

Dave
K9FN



On Wed, Jun 1, 2011 at 9:30 AM, Maurice Farissier <mauricef@...> wrote:
 

Thanks Dave !

 

 I’ll be buying a new kit  K3/100 next month after payday.  I am still up in the air about what filters I’ll be going to get.  Any recommendation – 90% CW, 5% RTTY, 5% SSB, all light contest at times. 

I’m excited as this is the first rig in 20 years since my last TS 940 AT.  

 

De KA1S, Moe.

 

 

 


From: Elecraft_K3@... [mailto:Elecraft_K3@...] On Behalf Of Dave Sharred
Sent: Wednesday, June 01, 2011 7:35 AM

Subject: RE: [Elecraft_K3] K3 - Kit build observations for comment

 

 

HI Moe;

 

You asked :

Just wondering how long did it take to build the units..  ??

 

I saw quoted 10 hours; and I think that was about right for our 1st one. We were methodical; and actually worked as a pair - one with the instructions, the other doing the work.  2 is definitely better that one I think; I am certain 1 person would be slower.  The 2nd is coming on much faster; we just need to reconvene for the 2nd RX and amp; which will take maybe 2 hours.

73

 

Dave

G3NKC

 



Re: [Elecraft_K3] K3 - Kit build observations for comment

Rob Sherwood
 


Re: [Elecraft_K3] K3 - Kit build observations for comment

David Bunte
 

Moe -

I bought mine at Dayton, it arrived the following Thursday and was on the air 30 hours later.  I really took my time... and joined my wife for a couple of social obligations, in addition to eating all my meals with her.  No crumbs in the rig that way. 

With so many filter options it can be hard to decide.  MOST users I have heard from indicate that the 400Hz filter is sufficient for ALMOST all CW challenges... and if you do only about 5% SSB the 2.7 kHz should be just fine.  I also got the 1 kHz filter to make tuning the band on CW a bit easier.  I don't own a mic, so you know where you can find me on the bands.  I have a friend who is a very serious RTTY DXer and he says there may be times when the 200 Hz filter would be helpful.

Enjoy,

Dave
K9FN



On Wed, Jun 1, 2011 at 9:30 AM, Maurice Farissier <mauricef@...> wrote:
 

Thanks Dave !

 

 I’ll be buying a new kit  K3/100 next month after payday.  I am still up in the air about what filters I’ll be going to get.  Any recommendation – 90% CW, 5% RTTY, 5% SSB, all light contest at times. 

I’m excited as this is the first rig in 20 years since my last TS 940 AT.  

 

De KA1S, Moe.

 

 

 


From: Elecraft_K3@... [mailto:Elecraft_K3@...] On Behalf Of Dave Sharred
Sent: Wednesday, June 01, 2011 7:35 AM

Subject: RE: [Elecraft_K3] K3 - Kit build observations for comment

 

 

HI Moe;

 

You asked :

Just wondering how long did it take to build the units..  ??

 

I saw quoted 10 hours; and I think that was about right for our 1st one. We were methodical; and actually worked as a pair - one with the instructions, the other doing the work.  2 is definitely better that one I think; I am certain 1 person would be slower.  The 2nd is coming on much faster; we just need to reconvene for the 2nd RX and amp; which will take maybe 2 hours.

73

 

Dave

G3NKC

 



Re: [Elecraft_K3] K3 - Kit build observations for comment

Chuck ke9uw
 

I was anxious about removing the 2nd receiver too, but it turned out to be
easy when I added more filters.
Chuck, KE9UW

---- Original message ----
Date: Tue, 31 May 2011 20:03:34 +0100
From: "Dave Sharred" <g3nkc@...>
Subject: [Elecraft_K3] K3 - Kit build observations for comment
To: <Elecraft_K3@...>



Hi;



Myself and a good friend (G4XUM) have recently
purchased and built up 2 K3's. All went pretty
smoothly, but there were a few observations. Our
radios were pretty well loaded, with 100W PA, and
2nd receiver too.



1) I didn't enjoy putting in the 2nd Rx,
neither would I like to remove it again!&nbsp! ;
Anyone considering a purchase would be well advised
to be sure that they specify all of their required
filters first, since the filters live under the 2nd
RX.

2) I am not sure if you can install the 2nd
KSYN3 board (for dual rx) before 1st test; but this
would seem to be a good idea, if you intend fitting
the 100W PA - access is severely restricted when
the KPA 3 enclosure is installed

3) The flying lead from the Ant sockets to
their connectors - I would have expected these to be
coaxial, not just flying leads; the ANT 1 one in
particular looks too long (see p24 on the Kit
manual). Is this in any way detrimental to 6m
operation ??



We are looking forward to using our new radios on
our trips in future. We already used 2 K3's last
year from S79K; and clearly were impressed enough to
buy some for ourselves!



73



Dave

G3NKC








Re: [Elecraft_K3] K3 - Kit build observations for comment

Maurice Farissier
 

Thanks Dave !

 

 I’ll be buying a new kit  K3/100 next month after payday.  I am still up in the air about what filters I’ll be going to get.  Any recommendation – 90% CW, 5% RTTY, 5% SSB, all light contest at times. 

I’m excited as this is the first rig in 20 years since my last TS 940 AT.  

 

De KA1S, Moe.

 

 

 


From: Elecraft_K3@... [mailto:Elecraft_K3@...] On Behalf Of Dave Sharred
Sent: Wednesday, June 01, 2011 7:35 AM
To: Elecraft_K3@...
Subject: RE: [Elecraft_K3] K3 - Kit build observations for comment

 

 

HI Moe;

 

You asked :

Just wondering how long did it take to build the units..  ??

 

I saw quoted 10 hours; and I think that was about right for our 1st one. We were methodical; and actually worked as a pair - one with the instructions, the other doing the work.  2 is definitely better that one I think; I am certain 1 person would be slower.  The 2nd is coming on much faster; we just need to reconvene for the 2nd RX and amp; which will take maybe 2 hours.

73

 

Dave

G3NKC

 


Re: [Elecraft_K3] Re: K3 - Kit build observations for comment

Dave Sharred
 

Further comments interspersed Bill !
 
73 Dave
G3NKC


--- On Wed, 1/6/11, bill_w4zv wrote:

From: bill_w4zv
Subject: [Elecraft_K3] Re: K3 - Kit build observations for comment
To: Elecraft_K3@...
Date: Wednesday, 1 June, 2011, 11:55

 
Hi Dave,

--- In Elecraft_K3@..., "Dave Sharred" wrote:

> 1) I didn't enjoy putting in the 2nd Rx, neither would I like to remove
> it again! Anyone considering a purchase would be well advised to be sure
> that they specify all of their required filters first, since the filters
> live under the 2nd RX.

Good advice about the filters! Actually it's not so bad removing the KRX3. I've done it a couple of times and the dreading is worse than the doing. :-)
Good to know Bill, Maybe I have a little more confidence now!  I still won't want to remove the KRX3 unless I really have to !
 
> 2) I am not sure if you can install the 2nd KSYN3 board (for dual rx)
> before 1st test; but this would seem to be a good idea, if you intend
> fitting the 100W PA - access is severely restricted when the KPA 3
> enclosure is installed

I can install both K3SYN boards without removing the KPA3. The only tricky part is making sure you don't lose the 2 screws and associated parts when removing them. I've done this several times with different units to add the K3STFNR stiffener kits.
I mastered the techniqe for not losing the screws, for the 2nd KSYN3, when the stiffener bar . KPA shield is in place, its tricky to tighten the screws. even my flexible screwdriver head was tricky.  It helps to tilt the radio BTW when locating the screws, let gravity work for you..
> We are looking forward to using our new radios on our trips in future. We
> already used 2 K3's last year from S79K; and clearly were impressed enough
> to buy some for ourselves!

Nice job on Topband!
Sacrilidge as it is, I can take not credit whatsoever for 160; that was the work of Michael, G7VJR (Must be losing my edge). However, I can take full credit for the 80m QSO's!!  If we don't take the radios someplace beforehand, rest assured they will be used at MD4K next January by the kit builders!!


Re: Audio Peaking Filter ,K3

bill_w4zv <w0zv@...>
 

--- In Elecraft_K3@..., "dave" <dhwank@...> wrote:

Hello ,I just wondered if anyone could offer any tips on using the APF filter in the K3.I have read the manual and have tried the APF,but it seems I am missing something,about how to use the filter correctly.Thanks for any help...Dave...NK8A
You're right, the manual is somewhat skimpy:

"APF can make a dramatic difference in copy of
weak signals buried in noise. When APF is turned
on, SHIFT fine-tunes the center pitch, and
NORM resets the pitch to that of your sidetone. The
filter graphic will be similar to that shown below."

Here's what else you should know. APF is a VERY narrow audio filter with 30 Hz BW at -3 dB and a Q of ~20 at 600 Hz pitch setting. Which all means that tuning is VERY critical. Not mentioned above is that SHIFT tunes APF in 5 Hz steps. I personally prefer setting VFO to FINE and tuning in 1 Hz steps. BTW here is a link to Powerpoint slides showing the FT-1000D's APF which the K3 emulates in its DSP firmware:

http://sites.google.com/site/ft1000apf/w6lxanalysisoftheapfcircuitintheft-1000

APF should only be used for EXTREMELY weak signals (i.e. below the noise floor) as the manual states. If you can hear a weak signal well enough to copy it, you don't need or want APF. It requires such careful tuning it should only be used as a last resort, but it definitely can help for extremely weak signals.

73, Bill

P.S. My first experience with APF:

http://mailman.qth.net/pipermail/elecraft/2010-October/138900.html

Wayne released APF to Field Test last night and also said it was OK to post comments. It seems to work very well and I expect it will be released publicly soon.

APF (as implemented in the FT-1000) has always been a weak signal receiving tool. It's not for adjusting PITCH or some of the other ideas discussed. Last night I happened to be listening on 160m around 02z just after I got it installed. 5R8RJ usually comes on 1826.44 a little before his sunrise. Conditions were very poor but he was spotted by a UA4 around 0210z. I could hear nothing of him on his normal frequency. CW Skimmer's waterfall was also showing absolutely no signal there...not even a faint trace. I then actuated APF and could then copy him about Q3 in the noise.

This is exactly what APF is designed for...pulling extremely weak signals out of noise...and it does it very well. The user interface is also very simple. Although it may change slightly before public release, you hold DUAL PB (as though you were going into the previous CW focus mode) and then adjust SHIFT in 10 Hz steps (***EDIT*** since changed to 5 Hz steps) to peak the signal (independent of your PITCH
setting). It works well in diversity also.

Nice job guys...all the previous FT-1000 owners will rejoice!

73, Bill W4ZV


Re: [Elecraft_K3] K3 - Kit build observations for comment

Dave Sharred
 

HI Moe;
 
You asked :

Just wondering how long did it take to build the units..  ??

 
I saw quoted 10 hours; and I think that was about right for our 1st one. We were methodical; and actually worked as a pair - one with the instructions, the other doing the work.  2 is definitely better that one I think; I am certain 1 person would be slower.  The 2nd is coming on much faster; we just need to reconvene for the 2nd RX and amp; which will take maybe 2 hours.

73
 
Dave
G3NKC
 


Re: Audio Peaking Filter ,K3

mike_k2mk <K2MK@...>
 

Hi Dave,

I find it to be marginally better at wider bandwidths, 200Hz minimum. At 50Hz to 150Hz I am unable to distinguish characters. Others have found that using a tiny amount of RIT to move slightly off frequency helps. Then always use the shift control to peak. It also works better if the band is not too noisy. In other words, a weak signal on a quiet band.

I was a big proponent of the APF having moved from a FT1000D. There was a lot of hoopla surrounding the release and you see it mentioned in all of Elecraft's print ads. And on at least two occasions I was able to copy signals that I could not copy without the APF. But overall, my experience with using the APF has been less than satisfactory to the point that I rarely engage it.

73,
Mike K2MK

--- In Elecraft_K3@..., "dave" <dhwank@...> wrote:

Hello ,I just wondered if anyone could offer any tips on using the APF filter in the K3.I have read the manual and have tried the APF,but it seems I am missing something,about how to use the filter correctly.Thanks for any help...Dave...NK8A


Re: K3 - Kit build observations for comment

bill_w4zv <w0zv@...>
 

Hi Dave,

--- In Elecraft_K3@..., "Dave Sharred" <g3nkc@...> wrote:

1) I didn't enjoy putting in the 2nd Rx, neither would I like to remove
it again! Anyone considering a purchase would be well advised to be sure
that they specify all of their required filters first, since the filters
live under the 2nd RX.
Good advice about the filters! Actually it's not so bad removing the KRX3. I've done it a couple of times and the dreading is worse than the doing. :-)

2) I am not sure if you can install the 2nd KSYN3 board (for dual rx)
before 1st test; but this would seem to be a good idea, if you intend
fitting the 100W PA - access is severely restricted when the KPA 3
enclosure is installed
I can install both K3SYN boards without removing the KPA3. The only tricky part is making sure you don't lose the 2 screws and associated parts when removing them. I've done this several times with different units to add the K3STFNR stiffener kits.

We are looking forward to using our new radios on our trips in future. We
already used 2 K3's last year from S79K; and clearly were impressed enough
to buy some for ourselves!
Nice job on Topband!

73, Bill W4ZV


Re: [Elecraft_K3] K3 - Kit build observations for comment

Maurice Farissier
 

Hi Dave !

 

Just wondering how long did it take to build the units..  ??

 

 

De KA1S,  Moe..

 


From: Elecraft_K3@... [mailto:Elecraft_K3@...] On Behalf Of Dave Sharred
Sent: Tuesday, May 31, 2011 2:04 PM
To: Elecraft_K3@...
Subject: [Elecraft_K3] K3 - Kit build observations for comment

 

 

Hi;

 

Myself and a good friend (G4XUM) have recently purchased and built up 2  K3’s. All went pretty smoothly, but there were a few observations. Our radios were pretty well loaded, with 100W PA, and 2nd receiver too.

 

1)      I didn’t enjoy putting in the 2nd Rx, neither would I like to remove it again! ! ; Anyone considering a purchase would be well advised to be sure that they specify all of their required filters first, since the filters live under the 2nd RX.

2)      I am not sure if you can install the 2nd KSYN3 board (for dual rx) before 1st test; but this would seem to be a good idea, if you intend fitting  the 100W PA – access is severely restricted when the KPA 3 enclosure is installed

3)      The flying lead from the Ant sockets to their connectors R 11; I would have expected these to be coaxial, not just flying leads; the ANT 1  one  in particular looks too long (see p24 on the Kit manual). Is this in any way detrimental to 6m operation ??

 

We are looking forward to using our new radios on our trips in future. We already used 2 K3’s last year from S79K; and clearly were impressed enough to buy some for ourselves!

 

73

 

Dave

G3NKC

 

 

 


Re: [Elecraft_K3] Re: Remote tuning knob for the K3

mikerodgerske5gbc
 

Actually marks iPhone already groups messages if he has a fairly late update at least mine does. There are 10 messages on this topic and all 10 can be deleted at one time. Sweet. 

73
Mike R

Sent from my spy ring

On May 31, 2011, at 11:34 PM, Gary K9GS <garyk9gs@...> wrote:

 

Mark, please send us a list of topics you're interested in.  I'm sure the reflector would be more than happy to tailor topics to your liking.

Or, there is always the delete key.  Not sure how that works on your iPhone though.

On 5/31/2011 11:42 AM, Mark Ward wrote:

 
Why can't we get on another topic I sick of getting so many emails on this remote tuning scenario



--


73,

Gary K9GS

Check out K9NS on the web:  http://www.k9ns.com
Greater Milwaukee DX Association: http://www.gmdxa.org
Society of Midwest Contesters: http://www.w9smc.com

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