[Elecraft] K2 / XV50 interfacing to power amplifier?

[Oliver Dröse]

Lenny,

use a sequencer to avoid hot switching (sequencer puts the amp online first, 
afterwards the transverter, then the K2, with delays between switching 
stages). A quick Google search on "ptt sequencer" will provide a few good 
solutions (including my own ;-)).

73, Olli - DH8BQA
http://www.dh8bqa.de




----- Original Message ----- 
From: "w2bvh" <w2bvh at comcast.net>
To: <elecraft at mailman.qth.net>
Sent: Saturday, January 14, 2012 12:50 AM
Subject: [Elecraft] K2 / XV50 interfacing to power amplifier?


> HI!
>
> If you have a K2 / XV50 combo and have interfaced it to a power
> amplifier I'd like to hear from you on how you did it and what pitfalls
> you might have encountered.
>
> I've got a 6 Meter KW amp that I'd like to hook up to the K2 /XV50 and
> I'm concerned about possibly hot switching the RF on the output side of
> the amp with its 25 mS rf relay. The amp is switched active by grounding
> its keyline input.
>
> According to Elecraft, RF is only delayed by 3 mS from when the rig is
> keyed and as stated above, my amplifier output relay takes 25 mS to 
> switch.
>
> I tried adding the W3FPR footswitch mod to the K2 hoping it would do the
> trick.  It works  just fine when the K2 is set for any of the HF bands,
> but it doesn't seem to have any effect when using 6 Meters. Its possible
> that I implemented it wrong, but I don't think so because it does work
> OK without the XV50.
>
> Ideally I'd like to have a set-up where the K2, XV50 and amplifier could
> be thought of as just a single high power transceiver whose band switch
> has been set to 6 Meters.
>
> Any experience you've had doing a setup with the K2, XV50 and a power
> amp would be very much appreciated.
>
> 73
> Lenny W2BVH
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