[Milsurplus] SCR-300 Aircraft Radio

[Mike Morrow]

I wrote:

>The R-76/ARR-13 is an earlier radio than the 28 vdc BC-1206-C/Model 524.
> The ARR-13 is the Setchell Carlson Model 512, and it requires 14 vdc for
> filaments and a separate HV B+ supply.

Did the L-5 have a 28 vdc system (where the BC-1206 could be used), or a 14 vdc system (thus requiring the ARR-13)?  If the ARR-13 was used, where did the HV B+ come from?  It would seem that there may have been a HF transmitter and associated vibrator power supply in the installation if the ARR-13 was used.

Mike / KK5F