[Milsurplus] ARR 15, how to narrow selectivity???

[Joe Munson]

I do no have a ARR 15 receiver to try this on, but on my ARC 2, I used a 
"Gimmick Cap", 2 pieces of 18 or 20 Ga plastic covered solid hookup wire, 1- 
1/2 inches long, hooking them to the plate and grid leads of the IF coils, 
and twisting them together till they just went into oscillation, giving the 
IF strip some regenerative feedback.  This seemed to help the problem in the 
ARC 2.  I made exacting notes in the ARC 2 Manual, but it is not readily 
available.  This is from memory, but may be worth a try on the R 105/ARR 15.

Joe Munson
WA4VAG