[ARC5] TN 1B/APR-1 and TN 2B/APR-1 Military Radio Tuners

[WA5CAB at cs.com]

The primary difference between the three low-number and matching three high 
number tuning units is that the low number ones don't have motor driven 
tuning.  Otherwise, they are interchangable and the high number tuners will 
work OK in the R-13/APR-1 and the RDO.

In a message dated 06/24/2013 15:16:37 PM Central Daylight Time, 
releazer at earthlink.net writes: 
> According to an impeccable reference source - the G&G catalog from the 
> mid-70's - the TN-1 covers the same range as the TN-16, 38-95 MHZ, and the 
> TN-2 the same as the TN-17, 74-320 MHZ and both are interchangeable in the 
> APR-4.
> 
> The TN-3 is the same as the TN-18, 300-1000 MHZ..  The TN-19 covers 975 to 
> 2200 MHZ. The TN-54 is the one that covers 2200 MHZ to 4000 MHZ if you 
> want that range.
> 
> Apparently the APR-1 was virtually the same set but only had tuning units 
> for 38 to 1000 MHZ.
> 
> Wayne 

Robert Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480