[Elecraft] K160Rx protection

[Hans J Rasmusen via Elecraft]

Hello
My K2/K100 complain and wants to get on the air. 
I plan to use the build-in K160RX antenna switch for a separate rx antenna, 
which is about 10m /30 feet from my tx antenna. Plan to run 100 W. 
Tx antenna is a vertical. Rx antenna is a low (1 m above grd) horizontal 
dipole. 
Do I have to install a rx protection curcuit on the rx antenna. 
I do not remember doing so earlier, but have forgotten and want to play safe. 

Thank you, stay safe and keep distance
73
Hans Jørgen (Joe)
OZ7BQ

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[Elecraft] KX3 Dual Watch

[Hans J Rasmusen via Elecraft]

Good morning,

The KX3 has a nice Dual Watch feature. It is however, of limited use when the 
DX is weak and the callers are strong (a common case here).
To overcome this problem I have build a simple two channels audio amplifier 
with 2 LM380N (Manhattan style) with independent volumn controls. 
I can Independently boost the VFO A signal in one channel and reduce the VFO B 
in the other Channel. 
But some VFO A signal seems to leak into the VFO B channel and visa versa.
I can not observe any signal leakage when using an audio generator as test 
input. 

Has anyone observed something similar?
Does the KX3 Dual Watch feature only offer a limited channel separation or have 
I wired my amplifier wrongly?

Thank you in advance. 
73
OZ7BQ Hans Jørgen 



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[Elecraft] Connecting a KXUSB to the K2 RS232

[Hans J Rasmusen via Elecraft]

All,
During the past weekend I pulled my faithful K2 out for the EUHFContest.
I found a RS232 to USB cable locally, but it does not connect. Is there a way I 
can check if the chip works correctly?

I have a couple of KXUSB on hand. Is there any reason that I can not or should 
not connect the KXSUB Tip to Pin 3, the Ring to the Pin 2 and the Sleeve to Pin 
5 of the DB9F connector (from the K2)?
I should then be able to key and control the K2 from N1MM logger, as I do my 
KX3.

By the way, the K2 CW sound beats all, my KX3 included. 

Thanks 73
Hans Jørgen (Joe)
OZ7BQ

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Re: [Elecraft] Elecraft Digest, Vol 144, Issue 20

[Hans J Rasmusen via Elecraft]

Cool,
Will it work with the KX3 as well?
73
OZ7BQ, Hans Jørgen


Sendt fra min iPhone

> Den 14. apr. 2016 kl. 14.26 skrev elecraft-requ...@mailman.qth.net:
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> When replying, please edit your Subject line so it is more specific
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> Today's Topics:
> 
>   1. Re: K3s AFSK frequencies (n...@comcast.net)
>   2. Re: K3s AFSK frequencies (Ed Muns)
>   3. Re: K3s AFSK frequencies (Dave Hachadorian)
>   4. Re: AFSK-A with K3s (Mike Dodd)
>   5. Re: AFSK-A with K3s (Wes)
>   6. Re: AFSK-A with K3s (Wes)
>   7. Re: K3s AFSK frequencies (Ed Muns)
>   8. Re: KX3 Carrying Case (Chris Del Plato KQ2RP)
>   9. Re: AFSK-A with K3s (Mike Dodd)
>  10. Re: KX3 Carrying Case (Jock Irvine)
>  11. Re: KX3 Carrying Case (Bill Frantz)
>  12. Re: KX3 Carrying Case (Charlie T, K3ICH)
>  13. Re: KX3 Carrying Case (Walter Underwood)
>  14. KX-1 Paddle (KXPD1) (Scott Ellington)
>  15. New Elecraft Product: K-Pod Control Panel for K3S and K3
>  Transceivers (Wayne Burdick)
>  16. Re: New Elecraft Product: K-Pod Control Panel for K3S and K3
>  Transceivers (M Cresap)
>  17. Re: New Elecraft Product: K-Pod Control Panel for K3Sand K3
>  Transceivers (Wayne Burdick)
>  18. Re: [Elecraft_K3] New Elecraft Product: K-Pod Control Panel
>  for K3S and K3 Transceivers (Dave Cole)
>  19. Re: [Elecraft_K3] New Elecraft Product: K-Pod ControlPanel
>  for K3S and K3 Transceivers (Wayne Burdick)
>  20. K-Pod hands-on test opportunity;request for K-Pod
>  application ideas (Wayne Burdick)
>  21. Re: [Elecraft_K3] New Elecraft Product: K-Pod ControlPanel
>  for K3S and K3 Transceivers (Gary)
>  22. Re: New Elecraft Product: K-Pod Control Panel for K3S and K3
>  Transceivers (Bill)
>  23. Re: New Elecraft Product: K-Pod Control Panel for K3S and K3
>  Transceivers (Arie Kleingeld PA3A)
>  24. Re: New Elecraft Product: K-Pod Control Panel for K3S and K3
>  Transceivers (Irwin Darack)
>  25. Re: New Elecraft Product: K-Pod Control Panel for K3S and K3
>  Transceivers (Barry)
>  26. Re: New Elecraft Product: K-Pod Control Panel for K3SandK3
>  Transceivers (Doug Turnbull)
>  27. Re: New Elecraft Product: K-Pod Control Panel for K3S and K3
>  Transceivers (Martin Sole)
> 
> 
> --
> 
> Message: 1
> Date: Wed, 13 Apr 2016 15:58:28 + (UTC)
> From: n...@comcast.net
> To: j...@kk9a.com
> Cc: elecraft 
> Subject: Re: [Elecraft] K3s AFSK frequencies
> Message-ID:
><1267124641.8946069.1460563108394.javamail.zim...@comcast.net>
> Content-Type: text/plain; charset=utf-8
> 
> I have had really good luck using the 500hz roofing filter and adjusting down 
> to 400Hz with DSP for rag chewing. In contests I will adjust to 350 or even 
> 300Hz, depending on how close signals get bunched together, with very good 
> decode. 
> I've also made adjustments to AGC, which have also been an improvement. AGC 
> DCY - soft, AGC SLP - 6, AGC THR - 16. All other AGC settings at default. 
> These settings in my location, seem to work the best for me so far. 
> ? 
> Gene, N9TF 
> K3S 10057 
> 
> - Original Message -
> 
> From: j...@kk9a.com 
> To: "elecraft"  
> Sent: Wednesday, April 13, 2016 8:56:06 AM 
> Subject: Re: [Elecraft] K3s AFSK frequencies 
> 
> The optimal band width may depend on how crowded the band is. Wide 
> filtering may work well for a DXer trying to copy a super weak signal on a 
> quiet band. I only use RTTY in contests when the bands are packed and I 
> have had great results using very narrow roofing filters. 
> 
> John KK9A 
> 
> 
> from: Dave Hachadorian 
> Tue Apr 12 23:54:57 EDT 2016 
> 
> Current thinking is to use a fairly wide filter for RTTY. ?The 
> software filters that are applied in the sound card are much 
> narrower, about 50 Hz wide. ?Lately I've been using the 2.7 KHz 
> roofing filter, with DSP bandwidth set to about 600 Hz. 
> 
> 
> Dave Hachadorian, K6LL 
> Yuma, AZ 
> 
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> --
> 
> Message: 2
> Date: Wed, 13 Apr 2016 09:05:40 -0700
> From: "Ed Muns" 
> To: "'Mike Dodd'" 
>