[BC] am receiver for monitoring at a 20 KW site (add)

[Lotus Engineering]

I didn't realize there were so many fans of the old heavy Iron.  The discussions on the R390 take me back almost 50 years when I was an Electronics Instructor at Keesler AFB in Mississippi in a room with about 20 of them.  Even with the best of Air conditioning that room was always warm!  Great radios.

Bill

Bill Croghan CPBE WBØKSW
Chief Engineer,
Lotus Broadcasting, Las Vegas, NV
Celebrating my  50 Years in Broadcasting in December.
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-----Original Message-----
  From: seibold at trainride.com

I should add that both the R-390A and HRO were revered intercept receivers; there were thousands of HROs in WW II intercept service "digging out the weak ones" with less than half the tubes and a tenth of the mechanical complexity of the R-390A.

Fred W9FWS

-----Original Message-----

From: seibold at trainride.com<mailto:seibold at trainride.com>

A working-well R-390A would be a lot more expensive to buy and much harder to maintain than a National HRO with the right coil set for the freq.

73

Fred Seibold W9FWS

First 'Phone back when there was one......

-----Original Message-----

From: "Mark Humphrey" <mark3xy at gmail.com<mailto:mark3xy at gmail.com>>

Now, I wonder how an R-390A would work in this situation... You would need to keep it fed with 220 watts (about $25/month in energy) and replace tubes from time to time, but I'll bet it would do the job.


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