[R-1051] R-1051 IF alignment - advice?

[David Wise]

If you inject in place of the RF module, you have to go through three mixers before you get to the IF amp.
I would inject in place of the six-pack instead.  Either way, it's convenient to get or make a cable.
Look for "Size 9 coax" contacts.

By the way, one of the connectors happens to be the same as the old Sun workstation CRT monitor cable.

Dave Wise
SWL in Hillsboro OR

________________________________________
From: R-1051 [r-1051-bounces at mailman.qth.net] On Behalf Of paul swed [paulswedb at gmail.com]
Sent: Thursday, October 30, 2014 5:44 PM
To: R-1051 Discussion Group
Subject: Re: [R-1051] R-1051 IF alignment - advice?

Ray
I have not clue in the world as to why I might remember this, right or
wrong.
10uv would be about right for that point in the chain. Please understand
that memory is circa 1974.
Paul
WB8TSL

On Thu, Oct 30, 2014 at 4:57 PM, Ray Fantini <RAFANTINI at salisbury.edu>
wrote:

> The one useful test that I found on the 1051 is to remove the turret
> assembly and have an adapter to inject 500 KHz IF at that point ahead of
> the mode selector assembly. Don't remember the exact numbers but the
> receiver will be sensitive down into the microvolt level and that confirms
> the proper working of the mode selector, IF assemblies and master
> oscillator and divides all problems between the transverse or turret
> synthesizer and the rest of the radio. If I were still working on those
> things this would be my procedure, first check the 28volt and 20 volt
> regulated power supplies, the 110 volt B+ and then do the IF injection test
> and check all the modes. Then get ready to slog it out with the six packs.
> Have you built the adapter plug for running the radio out of the case yet?
> Or gotten any test leads caught up in the chains?
>
> Ray F
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