[R-390] R-390 ballast tube

[john w. king]

I can buy NOS 3TF7 tubes for $20.00 as I did at Shelby Hamfest from a tube
dealer who was there. Why would anyone want to pay $40.00???? 73, John,
K5PGW
----- Original Message -----
From: blw <ba.williams@charter.net>
To: <r-390@mailman.qth.net>
Sent: Tuesday, December 24, 2002 10:55 AM
Subject: Re: [R-390] R-390 ballast tube


>
> > Well we are selling 3TF7s for 35.00+500 shipping .
> > Why would you want to pay 100.00 or even up to 200.00 for a solid state
> > device when you can have the original part for a lot less in fact you
can
> > Buy at least three or more and still be cheaper in the long run and will
> > take of your needs longer than your life.
> > If you are really having trouble blowing them out then stick a inrush
> > limiter in your ac line to hold your AC voltage down till warm up.
> > I have 15 R-390a and 2 of them I have had over 10 years without a
failure of
> > this ballast tube while the other are not running all the time.
> > This tube has not left the planet like so many have been brain washed
into
> > believing there are a lot of these ballast tubes around and I have
> > Been offering these to the list not ebay as of yet.
> > So keep your receivers original like it was intended in the first place.
> > Your R-390 will like it and so will your R-391 and 390a receivers.
>
>
>
> A jumper wire across pins 2 and 7 is much cheaper than $40 for one of
those
> tubes, or the lifetime supply being suggested. 12BA6s are probably the
most
> common tube ever made, and are about $2 new. Been running this for 9 years
> now on the original 12BA6s.
>
> $40 for a tube that isn't really needed is a perfect example of artificial
> inflation.  I'll pass on the  idea of spending $120 for a lifetime supply
of
> 3TF7 tubes, and spend $6 on the 12BA6s instead. That should save me $114
per
> radio. I've got 2 R390As already, so I'm saving $228. If I buy 2 more
> radios, I'll probably save enough on 3TF7s to get the 5th radio for free!
>
> Hey, I'm on to something good here! Buy 4 R390As and get the 5th radio for
> free. My wife would relate to this.
>
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