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Author Topic: Want to modify 100w rig for real QSK  (Read 672 times)
VE2XLT
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Posts: 38


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« on: August 31, 2001, 11:48:06 AM »

I like fast QSK CW with my ICOM735 and wish to modify
some other non_QSK rig like HW5400 and IC-728
Looking for ideas and diagrams to do it.........Also wishing to make tube Heathkit SB300/401 in QSK mode if possible
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W9GB
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Posts: 2622




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« Reply #1 on: November 05, 2001, 03:23:09 PM »

You should consult the earlier ARRL Handbooks (library) for a number of projects that used realys OR pin diodes.  A number of these were offered in different configurations.  For the Heathkit, consult these resources for specific questions with the SB line:

http://members.accessus.net/~dwentz/kb9jja/heathkit/

http://www.theheathkitshop.com/

http://www.rtoham.com/

http://www.nctotalelectronics.com/

or

Heathkit Amateur Radio Repair
Ed Daignault WA1LJY
7232 Lincoln Baroda, MI 49101
616-429-4295
Former Heath Technician
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AD8P
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Posts: 3




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« Reply #2 on: November 09, 2001, 04:37:40 PM »

I have used a homebrew circuit for years that incorporates a vacuum relay. I have used it running a kw with excellent results using a Drake C-Line
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W2XS
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Posts: 25




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« Reply #3 on: December 07, 2001, 09:48:44 AM »

I once tried to modify a Tempo One transceiver for QSK. The antenna switching is the easy part - you can use a relay or an electronic t/r switch.  What is not easy is the T/R timing sequence needed to make the CW sound good (i.e., you want a "full" sound, not choppy). Some of the internal timing comes from the micro-controller in the rig. The TS930S, for example,  uses timed-sequence keying and sounds great on the air, with a perfectly-shaped CW waveform.  You might want to re-consider doing the modifications and instead go out and find a TS930S or any Ten-Tec rig where these issues have already been worked out.
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W3DCG
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« Reply #4 on: July 25, 2002, 12:31:13 PM »

Well, don't call me lazy- call me time deprived.

Get a used Ten Tec, Corsair, Triton, Omni C...these
seemed all over the place earlier in the year when I was looking- eBay, etc-

Every qso completed via Ten Tec Fluid Motion QSK makes the investment that much closer to being worth it!
ha.

Understated, Ten Tec QSK is simply AWSOME.

Cheers!

Darin.
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