I've seen HRO's for less than $50.00 at hamfest without coils! The VLF
coil might be hard to find but you'd end up with less stuff and less
work!

--

73
Hank WD5JFR
"elaich" wrote in message
...
"Henry Kolesnik" wrote in
news:qK0Lk.5910
:

An HRO 7 will tune down to 50 Kc with the proper coil set and I'd
guess
that some of the other HROs will too!

Jeez, if I had an HRO 7, I wouldn't need to do this to begin with!
LOL!

I'm going to use the Lear tuning head to feed the 85 kc IF of the
R-11a. My
big problem will be voltages. The R-11 uses 14 volt tubes, wired in
series
pairs. That was for the plane's 28 volt system. I'll have to rewire
them in
parallel and feed them 12 volts. I haven't looked at the Lear yet, but
it
probably uses the same idea.

Weren't R-11's fairly common? A Google search turns up only one page
on the
entire Internet that even mentions them. There are a couple of the
Lear
tuning heads on eBay. That surprised me.