[Collins] R-388

[Gerald]

On Mon, 2005-08-08 at 22:21 -0400, BSugarberg wrote:
> Hello Larry,
> 
> As I recall, in the R-388 the antenna circuit was modified
> to match a standard military short whip antenna.  There
> was an article in CQ magazine by Capt. Paul Lee on rebuilding
> the R-388 antenna circuit back to the 51J-3 standard.
> 
> 73, Bruce WA8TNC

The R388 in 51J3 package with Collins gray panel seems to have the same
input circuit as the 51J4 manual that came with it. I think the
difference between the J3 and the J4 is the mechanical filter module.
This one has an antenna trimmer and it looks like it was built in at
thee factory. The J1 and J2 don't have the antenna trimmer.
-- 
73, Jerry, K0CQ, Technical Advisor to the CRA
All content copyright Dr. Gerald N. Johnson, electrical engineer