[Milsurplus] CY-67 / TRC-1 and mixed crystals in it

[WA5CAB at cs.com]

AN/TRC-1 was the first VHF FM radio relay or terminal set. One voice 
channel in the roughly (the manuals are in the attic) 70-100 MC range. The 
crystals were originally in FT-241 holders, later called CR-4(*)/U. I would have to 
check the manuals but have always assumed that the crystals were probably 
in the roughly 300-500 KC range like those for the BC-604 and BC-684. 

The ones for the RT-12/TRC-2 and BC-1306 would be in FT-243 holders. and be 
between 1000 and 3250 KC.

The 1- and 2-digit channel numbers between 0 and 79 are for the BC-620. The 
3-digit channel numbers between 270 and 389 are for the BC-659. Holders 
should be type FT-243, or CR-6(*)/U.

The CR-8(*)/U holders are for AN/GRC-9 and should be between 1000 and 6000 
KC.

Anything marked CR-5(*)/U is for the BC-611.

Robert Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480


In a message dated 08/30/2017 15:29:13 PM Central Daylight Time, 
Kargo_cult at msn.com writes: 
> I found in my stuff, a crystal box CY-67 / TRC-1.  It had these groups of 
> crystals in it: 
> 
> some labeled for AN/TRC-2 ; some for BC-1306 ; 
> 
> some labeled with channels in two digits channels 10 thru 55, freqs in the 
> 6 and 7 MHz range;
> 
>  some labeled with channels in numbers in 290s to mid 300s, freqs seem to 
> be in 7 – 8 MHz range;
> 
>  and some labeled with CR-8B/U and freqs in the 1972.5 – 2895 kHz range. ( 
> Not marine band freqs. )
> 
>   
> 
>  Maybe someone here is familiar enough with these crystal ranges to tell 
> me what equipment the 
> 
> channel crystals and the CR-8B/U crystals were for?  I am guessing maybe 
> the CR-8B/U rocks are 
> 
> remnant of the original complement of the TRC-1 box.
> 
>  At least the box will be a reasonable accessory for my TRC-2. 
> 
> thanks-
> 
>  Hue 
> 
> 
> 
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