[Milsurplus] WWII GF/RU Items for Trade and Wanted

[Mike Morrow]

Dave wrote:

> GF/RU Items I need:

> RU Coil Range "C", prefer RU-15 or earlier.
> RU Coil Range "G", prefer RU-15 or earlier.

Dave, are these for your RU-15 CBY-46064 receiver?  If so, it did not use range C (CBY-47067, 545-850 kHz) nor G (CBY-47071, 3000-4525 kHz).  Because the CBY-46064 has a high end/low end tuning ratio of 2.0, it uses special coil sets whose ranges start with Z.

RU-15 Coil Sets (12/21/1939)
NT Number      kHz        Range
CBY-47144   1000- 2000     ZE
CBY-47146A   200-  394     ZR
            3100- 5600     ZG
CBY-47147A   200-  394     ZR
            5500- 9050     ZH
CBY-47148    530- 1000     ZD
            2000- 3700     ZF

The predecessor set that used receiver CBY-46064 was RU-9.

RU-9 Coil Sets (10/31/1938)
NT Number       kHz        Range
CBY-47143     200-  400     ZB
CBY-47144    1000- 2000     ZE
CBY-47145     200-  380     ZA
             2000- 3700     ZF
CBY-47146     200-  380     ZA
             3100- 5600     ZG
CBY-47147     200-  380     ZA
             5500- 9050     ZH
CBY-47148     530- 1000     ZD
             2000- 3700     ZF

NOTE;  Preliminary Instruction Book for GF-7/RU-9 indicates only 40 sets built.

The predecessor set that used receiver CBY-46064 was RU-8.

RU-8 Coil Sets (02/23/1938)
NT Number       kHz        No Range Letters Used
CBY-47128A    200-  400
CBY-47128B   1000- 2000
CBY-47128C    200-  390
             2000- 3700
CBY-47128D    200-  390
             3100- 5600
CBY-47128E    530- 1000
             2000- 3700

I have been meaning to ask if you actually have the proper coil sets for your RU-15 CBY-46064 receiver.  I'd expect them to be extremely rare, just like your CBY-46064 Ru-15.   Or will you make do with the coil sets from the other receivers, which use a high end/low end tuning ratio of 1.5?

Mike / KK5F