Amps
[Top] [All Lists]

Re: [Amps] Tl 922 mods

To: Jim W7RY <w7ry@centurytel.net>
Subject: Re: [Amps] Tl 922 mods
From: Vic Rosenthal <k2vco.vic@gmail.com>
Date: Thu, 29 Oct 2015 06:35:23 +0200
List-post: <amps@contesting.com">mailto:amps@contesting.com>
That's what I said in the second paragraph of my post.

Vic 4X6GP/K2VCO 

> On 29 Oct 2015, at 5:55 AM, Jim W7RY <w7ry@centurytel.net> wrote:
> 
> Sequencing of the relays is totally un-necessary, IF the the relays are 
> energized BEFORE RF is sent from the exciter.
> 
> 73
> Jim W7RY
> 
> 
> 
> 
> -----Original Message----- From: Vic Rosenthal 4X6GP/K2VCO
> Sent: Wednesday, October 28, 2015 2:30 PM
> To: amps@contesting.com
> Subject: Re: [Amps] Tl 922 mods
> 
> 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
>> 
>> Sent via the Samsung Galaxy S®6 active, an AT&T 4G LTE smartphone
>> _______________________________________________ Amps mailing list
>> Amps@contesting.com
>> http://lists.contesting.com/mailman/listinfo/amps
> _______________________________________________
> Amps mailing list
> Amps@contesting.com
> http://lists.contesting.com/mailman/listinfo/amps 
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
<Prev in Thread] Current Thread [Next in Thread>