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Re: [Amps] Tl 922 mods

To: "Alek Petkovic" <vk6apk@bigpond.com>, "AMPS" <amps@contesting.com>
Subject: Re: [Amps] Tl 922 mods
From: "Jim W7RY" <w7ry@centurytel.net>
Reply-to: Jim W7RY <w7ry@centurytel.net>
Date: Wed, 28 Oct 2015 21:09:29 -0700
List-post: <amps@contesting.com">mailto:amps@contesting.com>
My TL922 QSK boards are here:

http://www.ebay.com/itm/281841972718?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649


Based on the Richard Measures info.
73
Jim W7RY


-----Original Message----- From: Alek Petkovic
Sent: Wednesday, October 28, 2015 3:16 PM
To: AMPS
Subject: Re: [Amps] Tl 922 mods

Also see:

http://somis.org/
There's a wealth of good stuff on the TL-922 there.

 http://www.pa0fri.com/
Click on Mods and then Kenwood TL-911 modifications. It actually
describes the TL-922.

73, Alek
VK6APK
*
*
On 29/10/2015 5:30 AM, Vic Rosenthal 4X6GP/K2VCO wrote:
W8ZR designed a sequencer board sold by Harbach which will protect your relays, amplifier and transceiver. See <http://w8zr.net/QSK/index.htm>. This is the best way. Whatever you do, you should read his QST article that is linked there.

If you know that your transceivers provide enough time after asserting key out and before producing RF, as well as a reasonable delay after RF stops and before key out goes back to the receive state, then you can just use a pair of vacuum relays or a vacuum relay and a reed relay to replace the open frame relay in the TL922. Exactly how you do this will depend on the coil voltage requirements of the relays that you use.

73,
Vic, 4X6GP/K2VCO
Rehovot, Israel
http://www.qsl.net/k2vco/


On 28 Oct 2015 23:04, Arnie Pfingst wrote:
I have a tl 922a with 10m amp driven by a Kenwood ts 940 or Yaesu ft
950 . It all works great except for the slow change over relay in the
amp. Im using the arb 704 interface for keying. I need a good mod for
the slow relay! After all this time I'm going to order the Harbach
soft start, and filter kit and will adjust the FIL voltage as needed.
Does anybody have any other ideas?ThanksArnie. Kd6cz

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