[ARC5] [Milsurplus] RU coil G substitute or ?

[Mike Morrow]

George wrote:

> According to my limited notes, the "G" range was not supplied
> as single coil.

Yes, there is a single-range coil set CBY-47071 for range G (3000 to 4525 kHz).  But it was not one of the coil sets supplied with Western Electric-made RU-16, -17, -18, or -19 receivers.  It (and all other coil sets with ranges designated by a single letter) will work in these receivers:

CBY-46036  - RU-3/GF-1
CBY-46041  - RU-3A/GF-2
CBY-46046  - RAJ
CBY-46048  - RU-4
CBY-46048A - RU-5
CBY-46048B - RU-6
CBY-46048C - RU-10, early RU-11, early RU-12
CBY-46048D - RU-11, RU-12
CW -46048D - RU-18, RU-19
CBY-46051  - RU-4A/GF-3
CBY-46051A - RU-5A/GF-4, RU-7/GF-5, RU-13/GF-8, RU-14/CF-9
CW -46051A - RU-16/GF-11, RU-17/GF-12

It will not work in these receivers:
CBA-46000  - RU-1
CBY-46006  - GF
CBY-46012  - RU-2/GF
CBY-46012A - RU-2A
CBY-46064  - RU-8/GF-6, RU-9/GF-7, RU-15/GF-10

> It was included on two of the dual range coils:
> CW-47102, Q & G ranges.

You mean CBY-47107.  The navy type 47102 coil set CAY-47102A through F is the set of six tuning units for long-range transmitter GP-3 CAY-52058.

Mike / KK5F