[Hallicrafters] Hamming with a SX-71?

[Barrie Smith]

Phil:

How much power are you planning on using?

I used an SX-71 on 40 meter CW back in the 1950's (the fifties were on ALL
the calenders) with no problems whatsoever using an open-frame relay.

There are relays available now with an internal shorting bar that grounds
the RX to ground when in TX mode.  Or, use two relays with a shorted
connector, which does the same thing.

I've used both methods recently for both AM operation, using boatanchors,
and EME, using somewhat more modern gear.

73, Barrie, W7ALW

----- Original Message ----- 
From: "Philip Atchley" <beaconeer at elite.net>
To: <hallicrafters at mailman.qth.net>
Sent: Sunday, September 14, 2003 6:08 PM
Subject: [Hallicrafters] Hamming with a SX-71?


> Hi.
> I have an SX-71 here that I overhauled a year or so back and use primarily
> for SWLing and program listening (not a lot of hardcore DXing on it, I use
> the "modern" SS sets for that).
>
> However, a good friend has offered me his Johnson Ranger (which I
overhauled
> for him a couple years back) and handkey on "permanent" loan to put me
back
> on the air in CW mode.  I would "probably" want to use it with this SX-71
as
> I would hate to wipe out the front end of one of my expensive "modern"
Yaesu
> sets.  (I just don't trust those Dow relays to keep RF out of the
receiver).
>
>
> Is anyone on the list using a SX-71 for hamming, particularly in the CW
mode
> and if so how well does it work for that, particularly stability in the CW
> mode etc?  I know I'd want to put a Xtal calibrator on it to keep me out
of
> trouble (being an Advanced Class I have to stay out of that lower 25 KHz
;^)
>
> Would you do it or would you use something newer (like a Yaesu FRG-100
with
> filters and DSP), trying to take steps from wiping out the front end?
>
> 73 de Phil  KO6BB
>
>
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