[ARC5] A Table of RU vs. GF/GO/GP Associations
Henry Mei'l's
meils at get2net.dk
Fri Apr 15 01:51:33 EDT 2011
If I remember correctly, there was PA (837?) anode voltage on those really
nice looking, silver plated, solidly constructed plug-in
coils on the GF-11 transmitters.Of course I could check that by looking at
the schematic.
Henry
oz3o n2nr
----- Original Message -----
From: "Mike Morrow" <kk5f at earthlink.net>
To: <arc5 at mailman.qth.net>
Sent: Thursday, April 14, 2011 11:31 PM
Subject: [ARC5] A Table of RU vs. GF/GO/GP Associations
>> I am investigating the GF-11 transmitter. It seems to me to be
>> historically important.
>
> Ken,
>
> The GF is a parasite of the RU. Literally. Its power comes from
> the associated RU (RU-16 for GF-11) dynamotor and system junction
> box. The RU-16 and GF-11 were always supplied as one set, and if
> one is lucky, ALL of the component serial numbers will be the same.
>
> I also like the late RU/GF sets. They have such a 1930s quality about
> them that I love. Even though the Western Electric RU-16/GF-11 has a
> 1941 contract date, except for coil sets supplied they are essentially
> identical to late-1930s A.R.C.-made sets like the RU-13/GF-8. It is
> actually a pretty good design for the time. A big mistake that some
> make is thinking that late RU/GF sets are in any way electrically
> similar to late SCR-*-183 and -283 sets. They are very different
> animals. We're lucky that the USN GF sets don't contain audiophool
> vacuum tube relics the way that the SCR sets do.
>
> The table that follows summarizes some of the related information
> that I have collected over the years. It will look really crappy
> unless you read e-mail as plain text, or go to list archives which
> displays all messages as plain text.
>
> Models of RU Aircraft Receivers,
> With GF/GO/GP Transmitter And RAT/RAV/RAX Receiver Notes
>
> Receiver Transmitter Contract
> Unit Frequency Unit Frequency Volts Date MFR(1)
>
> RU 250-1800 Unknown Unknown 12 1930 CBY
> RU-1 250-14000 Unknown Unknown 12 1931 CBY
> RU-2 224-350, GF 6200-7700 12 11/10/1932 CBY
> 5400-8100(2)
> RU-2a 200-400 None (Beacon Band) 12 03/31/1937 CBY
> RU-3 224-13575 GF-1 6200-7700 12 02/10/1934 CBY
> RU-3a 400-600, GF-2 3000-4525, 12 1934
> 3000-4500, 6000-9050
> 5400-8100
> RU-4 224-13575 GO-*/GP-* 12 1935 CBY
> RU-4a 224-13575 GF-3 3000-4525, 12 06/29/1935 CBY
> 6000-9050
> RU-5 195-13575 GO-*/GP-* 12 05/16/1936 CBY
> RU-5a 195-830, GF-4 3000-4525, 12 1936 CBY
> 3000-4525, 6000-9050
> 5200-9050
> RU-6 195-13575 GO-*/GP-*(3) 12 1937 CBY
> RU-7 195-13575 GF-5 3000-4525, 12 1938 CBY
> 6000-9050
> RU-8 200-400, GF-6 2000-4525 12 02/23/1938 CBY
> 530-5600
> RU-9 200-400, GF-7 2000-9050 12 10/31/1938 CBY
> 530-5600
> RU-10 195-13575 GO-*/GP-*(3) 12 1938 CBY
> RU-11 195-13575 GO-*/GP-*(3) 12 11/22/1939 CBY
> RU-12 195-13575 GO-*/GP-*(3) 24 11/22/1939 CBY
> RU-13 195-13575 GF-8 3000-4525, 12 1939 CBY
> 6000-9050
> RU-14 195-13575 GF-9 3000-4525, 24 1939 CBY
> 6000-9050
> RU-15 200-394, GF-10 3000-9050 12 12/21/1939 CBY
> 530-9050
> RU-16 195-13575 GF-11 2000-9050(4) 12 04/21/1941 CW
> RU-17 195-13575 GF-12 2000-9050(4) 24 04/21/1941 CW
> RU-18 195-13575 GO-*/GP-*(3) 12 04/21/1941 CW
> RU-19 195-13575 GO-*/GP-*(3) 24 04/21/1941 CW
>
> NOTES
> (1) Manufacturer:
> CBY Aircraft Radio Corporation
> CW Western Electric Company
> (2) Early receiver nomenclature was the same as the transmitter (GF).
> (3) GO through GO-3 covers 300-600 and 3000-13575 kHz (typical).
> GO-4 through GO-6 covers 300-600 and 3000-26500 kHz.
> GO-7 through GO-9 covers 300-600 and 3000-18100 kHz.
> GP through GP-7 covers 350-1500 and 3000- 9050 kHz.
> The A.R.C. RAT or RAT-1 (13500-27000 kHz) can extend liaison
> receiver coverage beyond the RU-* 13575 kHz high end for use with
> GO-4 through GO-6 (26500 kHz high end), and GO-7 through GO-9
> (18100 kHz high end).
> The A.R.C. RAV (190-27000 kHz) can replace both the RU-* and
> the RAT-* for use with GO-4 through GO-9.
> The G.E. RAX-1 (200-27000 kHz) can replace ALL earlier receiver
> sets for liaison use.
> (4) Early GF-11 and GF-12 frequency range is 3000-4525 and 6000-9050 kHz.
>
> RU models (after RU-1) that were not associated with a GF “command”
> transmitter were associated with a GO- or GP-series “liaison” transmitter.
> Normally, two receivers were associated with each liaison transmitter.
> A list of a few associations known from limited USN documentation are:
>
> RU-Series GO-Series GP-Series
> Receiver Transmitter Transmitter
>
> RU-4 GO-1, -2 GP, -1, -2, -3
> RU-5 GP-3, -4
> RU-6 GO-3, -5, -6 GP-3, -4
> RU-10 GP-4, -4a, -5
> RU-11 GP-4, -6, -6a
> RU-12 GO-6, -7, -9 GP-6
> RU-18 GO-9
> RU-19 GO-9 GP-7
>
> I'm still looking for more information on the RU and RU-1, and for
> contract
> dates that are shown with YEAR info only.
>
> Mike / KK5F
>
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