Re: [Elecraft] K3 band data query

[Larry (K8UT)]

Dennis,

The K3's BCD outputs are defined by band, not frequency. You need something 
that tracks QRG, but the following may be serious overkill for your needs...

If you use the general purpose logger DXLabs, or the contest logger N1MM, 
consider a freeware Band Decoder called FreqEZ. The program receives frequency 
info from those loggers and allows you to to define 255 band segments that 
control any combination of 16 remote relay lines. The software is free, but the 
hardware components are not. The FreqEZ website describes a DIY solution or an 
Assembled and Tested solution. (DISCLAIMER: I wrote the free software, but I 
also sell the Assembled and Tested hardware)

www.freqez.info

If you only need a few outputs, you could probably cobble together something 
that uses the free software but is simpler and cheaper. Contact me if you're 
interested.

-larry (K8UT)

-- Original Message --
From: "Dennis Ashworth" 
To: Elecraft@mailman.qth.net
Sent: 2020-10-18 2:28:42 PM
Subject: [Elecraft] K3 band data query


I operate a vertical antenna for 80 & 160M where the bandwidth is such that I 
need to switch in reactance between the phone and CW portions of each band. I 
currently do this manually, but am installing vacuum relays for switching remotely. 
Is there a way the K3, through the data port or whatever, can send a signal when 
migrating between traditional (or operator defined) phone and CW portions of the 
band?

Antenna matched points on 160 are at 1825 and 1855; 80M are 3520 and 3800.

I had considered sensing the K3 mode, but that’s not an acceptable solution. 
The 160M CW contests can often extend into the traditional phone area and 
FT8/WSPR often use USB mode in the CW portion.

Thoughts?

Dennis, K7FL
Las Vegas, NV
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Re: [Elecraft] K3 band data query

[Bill Frantz]

Wait a minute. The Arduino is usually programmed in C, not 
Assembly. :-)


73 Bill AE6JV

On 10/18/20 at 4:21 PM, k...@outlook.com (Ken K6MR) wrote:

This is easy to do with an Arduino if you are capable with 
those kind of things.  The serial port on the Arduino can read 
the data from the K3, and set/clear a relay at any frequency 
you want.  Some assembly required.  :^)


---
Bill Frantz| There's nothing so clear| Periwinkle
(408)348-7900  | as a design you haven't | 150 Rivermead 
Rd #235
www.pwpconsult.com | written down. - Dean Tribble| Peterborough, 
NH 03458


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Re: [Elecraft] K3 band data query

[Joe Subich, W4TV]

>  Some assembly required.  :^)

microHAM Station Master (band decoder) has programmable "band edges"
and can generate separate controls for any arbitrary frequency
segment: .

No assembly required .

73,

   ... Joe, W4TV


On 2020-10-18 4:21 PM, Ken K6MR wrote:

This is easy to do with an Arduino if you are capable with those kind of 
things.  The serial port on the Arduino can read the data from the K3, and 
set/clear a relay at any frequency you want.  Some assembly required.  :^)

Ken K6MR

From: Dennis Ashworth
Sent: Sunday, October 18, 2020 11:30
To: Elecraft@mailman.qth.net
Subject: [Elecraft] K3 band data query

I operate a vertical antenna for 80 & 160M where the bandwidth is such that I 
need to switch in reactance between the phone and CW portions of each band. I 
currently do this manually, but am installing vacuum relays for switching remotely. 
Is there a way the K3, through the data port or whatever, can send a signal when 
migrating between traditional (or operator defined) phone and CW portions of the 
band?

Antenna matched points on 160 are at 1825 and 1855; 80M are 3520 and 3800.

I had considered sensing the K3 mode, but that’s not an acceptable solution. 
The 160M CW contests can often extend into the traditional phone area and 
FT8/WSPR often use USB mode in the CW portion.

Thoughts?

Dennis, K7FL
Las Vegas, NV



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Re: [Elecraft] K3 band data query

[Ken K6MR]

This is easy to do with an Arduino if you are capable with those kind of 
things.  The serial port on the Arduino can read the data from the K3, and 
set/clear a relay at any frequency you want.  Some assembly required.  :^)

Ken K6MR

From: Dennis Ashworth
Sent: Sunday, October 18, 2020 11:30
To: Elecraft@mailman.qth.net
Subject: [Elecraft] K3 band data query

I operate a vertical antenna for 80 & 160M where the bandwidth is such that I 
need to switch in reactance between the phone and CW portions of each band. I 
currently do this manually, but am installing vacuum relays for switching 
remotely. Is there a way the K3, through the data port or whatever, can send a 
signal when migrating between traditional (or operator defined) phone and CW 
portions of the band?

Antenna matched points on 160 are at 1825 and 1855; 80M are 3520 and 3800.

I had considered sensing the K3 mode, but that’s not an acceptable solution. 
The 160M CW contests can often extend into the traditional phone area and 
FT8/WSPR often use USB mode in the CW portion.

Thoughts?

Dennis, K7FL
Las Vegas, NV
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Re: [Elecraft] K3 band data query

[Don Wilhelm]

Dennis,

Frequency data is available from the RS-232 data, but needs decoding 
which implies that a smart device is needed (computer).  See the K3 
Programmer's Reference Manual for the commands and responses.


73,
Don W3FPR

On 10/18/2020 2:28 PM, Dennis Ashworth wrote:

I operate a vertical antenna for 80 & 160M where the bandwidth is such that I 
need to switch in reactance between the phone and CW portions of each band. I 
currently do this manually, but am installing vacuum relays for switching remotely. 
Is there a way the K3, through the data port or whatever, can send a signal when 
migrating between traditional (or operator defined) phone and CW portions of the 
band?

Antenna matched points on 160 are at 1825 and 1855; 80M are 3520 and 3800.

I had considered sensing the K3 mode, but that’s not an acceptable solution. 
The 160M CW contests can often extend into the traditional phone area and 
FT8/WSPR often use USB mode in the CW portion.


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