[Milsurplus] possible modifications for RBC receiver?

[Kenneth G. Gordon]

On 18 Sep 2016 at 23:58, WA5CAB--- via Milsurplus wrote:

> 
> In addition to that, if you modify an RBB or RBC by converting it to have a product detector, you 
> will lose the ability to work break-in CW.  The two receivers were design for the Navy's standard 
> practice for MF and HF sets up through the 1950's where transmitters usually had dedicated 
> antennas but receivers were usually tied into a receiver antenna transfer patchboard.  And there 
> were usually no control connections between receivers and transmitters.  Which meant that the 
> receivers had to be able to work satisfactorily with a 500 watt transmitter connected to a nearby 
> antenna being keyed.  For AM voice, other than the low power TCS, audio was muted in 
> whichever remote was patched in.  The recovery time of an RBB or RBC on CW is 
> instantaneous, so you can use it as a keying monitor and still hear someone trying to break you 
> through your dits.

Absolutely correct! I used my RBB for traffic handling. I was able to use a KW transmitter, a 
Tech-Rad T-350-XM, and the RBB. I used separate antennas for TX and RX and operated 
full QSK with the pair. A ham friend happened into my shack during one of our traffic nets 
and was astonished that my KW signal in the RBB was no louder than the guy I was 
working...who was 569.

The antennas were no more than 10 feet apart, although they were at right-angles to one 
another.

I loved that receiver.

Ken W7EKB

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