[Milsurplus] R-1004, the Zenith TO, and the 1L6...

[Al Klase]

Hi Ken,

The TO people have been massaging this for years. I think 
the right answer is to just ante up and buy a 1L6.  I 
suspect there was, a some point, a substantial slug of them 
in mil surplus that are now in the hands of the tube 
dealers.  Prices have been reasonably stable, climbing from 
about $30 to $45 over about 10 years.

The 1U6 is probably more rare that the 1L6.  Also it only 
has a 25mA filament, so you'd probably flame it in the TO 
series filament string if you didn't add a resistor in 
parallel.  Might be ok in the R-1004.

Al


Kenneth G. Gordon wrote:
> I've been searching for a decent substitute for the unobtainium 
> 1L6. I find a couple which have some promise, but I need to do 
> some more work.
> 
> The European DK-92 or 1AC6 (requires swapping the wiring at 
> pins 5 and 6), and the U.S. made 1U6 (a direct plug-in) may 
> work.



-- 
Al Klase - N3FRQ
skywaves@bw.webex.net
Flemington, NJ 08822
Web Page:  http://www.webex.net/~skywaves/home.htm