RadioBanter - View Single Post - R-390

February 15th 05, 02:36 AM

wrote:
I need a filament resistor ballast tube for the 390 , any leads on
getting one? thanks Harold W4PQW

Try the R-390 list; you'll have to subscribe to post, but the list is
full of good advice from people who know the rigs.

You can put a 47 Ohm 10% resistor in to replace the 3TF7 and probably
never have any filament regulation problems at all. It was put in
the circuit for situations where the 110 VAC power supply was *very*
uncertain.

The R-390 list is hosted at qth.net, and there's a signup page in the
tree based at http://www.qth.net/.

Replacements for 3TF7 are a FAQ, and you'll find leads if you really
want to spend the money. Just ask.

--
Mike Andrews, W5EGO/AE (!)

Tired old sysadmin, owned by one R-390 and 3 R-390A.