[R-1051] Six pack attack / RT618 URC-35B

[Nick England]

Can you please send me that URC-35 manual to post on my Navy pages?
Thanks
Nick England K4NYW
www.navy-radio.com


On Thu, Dec 12, 2019 at 5:18 PM John P. Caldwell <jcaldwell at rbcos.com>
wrote:

> Ray,
>
> I believe the R1051 was plentiful as the production quantities were
> intended
> to replace most or all the R390A's in Navy service at the time of release.
> The URC-35B on the other hand was deployed to replace TCS sets and other
> lower power HF R/T's in craft ranging from subs to patrol boats, tugs, etc.
> As a result the production numbers were way lower.   The URC-35B is from
> the
> same General Dynamics product family as the R1051 and T-827, but it
> suffered
> from significant RF amplifier problems.  The AM-3007 PA uses some goofy
> conduction cooled tube that's unobtanium (my hate for the thing has forced
> me to blank the tube number from memory).  The WRC-1 is a R1051 Rx, T-827
> Exciter and AM-3007 PA.   Again the PA was always the problem area.  I have
> a URC-35B and I've never been able to get more than about 20W out of the
> damn thing.  I have substituted the RT-618 in place of the T-827 / R1051B
> pair with the URC-23 and it works pretty well (suggestion credit goes to
> W2HX).   The URC-35B always generates interest in the shack as nobody knows
> what it is, but that's where the value ends.  I have to agree with your
> opinion of the Sunair URC-92 family.  As long as you don't run out of
> tantalum caps to feed the set,  it'll run forever.   BTW, I've uploaded the
> URC-35B depot manual set to the files section of the Milradio groups.io
> group for anyone that desires some stimulating reading.
>
>
>
> John W8SDA (ex WD8INC)
>
>
>
>
>
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