[ARC5] RU/GF sets

[Henry Mei'l's]

Ken

My GF11 rig was nice to look at but don't remember the receiver as being 
particularly selective. The non direct freq. reading on the transmitter 
earned my only pink ticket! Beautiful silver-plated plug-in coil assemblies: 
I was told that some sold the coild just for the silver content.
I enjoyed using the rig. Nice RF ammeter, too - I liked that white-on-black 
meter scale and indicator needle and its rapid movement
The Germans made extensive use of regeneration in their TRF receivers to 
improve selectivty (and sensitivity).
Isn't regeneration also used in the RAL? (Or is it the RAK or maybe both - I 
could check it out.)

Henry OZ1UF, Cph. ex NYC


----- Original Message ----- 
From: "Kenneth G. Gordon" <kgordon2006 at verizon.net>
To: <Arc5 at mailman.qth.net>
Sent: Sunday, August 22, 2010 10:58 PM
Subject: [ARC5] RU/GF sets


>I realize that the RU/GF sets were one of those types that were used before
> the "ARC-5" types appeared, but I am curious if anyone here is using or 
> has
> used them in the past, and what was your experience with them.
>
> One reason I ask is that for many years, I used an RAL-7 as my main 
> station
> receiver and came to really appreciate what a really good HF TRF receiver 
> is
> capable of doing.
>
> Since the RU was also an HF TRF, I am wondering how it might compare
> with the RAL.
>
> Were there any other military HF TRF receivers which were used "back
> then"?
>
> I know that the German's used TRF receivers in their aircraft almost
> exclusively in WWII, and that the Japanese also made heavy use of them,
> but were any other combatants using them then?
>
> Ken Gordon W7EKB
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