[R-390] Hello New to list- More questions
Barry Hauser
Barry Hauser" <[email protected]
Thu, 8 Aug 2002 23:14:56 -0400
Hi Mike & Crew:
Guess I'd rather write about 'em than do 'em tonight, but since we're on a
roll:
Biggest problem with the R-392 is that they're small and green. So,
compared to the big gray jobbies, they're oft negelected. Small enough
(about 11 inches in all directions) to stow in the bottom of a closet and
forget it's there for a few years.
I've had a bunch of them and they all worked either on delivery or after a
bit of tweaking - tubes, adjustments, etc. Haven't had any capacitor
failures at all. One day, I actually sat down and did a full alignment on
one. And then I tried it with something other than the "official" LS-166
speaker. The LS-166 is waterproof and concussion resistant, so not exactly
hi-fi. It is authentic and plug 'n play so that's what most of us use.
However, the easy thing is to tap off the inside of an LS-166's transformer
and run speaker leads to a modern speaker to hear what the audio is capable
of.
Results were impressive. They are comparable in performance (almost) to a
non-A, with the main drawback being the limited number of bandwidth
settings. This is one tube radio that's also a "tub" radio if you wanna.
One list member tested the waterproofness of his that way. The R-392
actually floats, but unfortunately, upside down, so you'll need your snorkel
and goggles.
Powering the '392 is no big deal. A reasonable 24 volt supply with about
3 - 5 amps will do, though should be 28 vdc. Don't forget, these ran off
vehicular power -- 24 volt nominal, 27-28 vdc actual, so not too smooth or
steady.
There was a nice piece with performance comparison on Josh Provero's web
site, but it's not where it was and I haven't found a new URL for it.
(anybody know?) One recommendation was to use two P/S's -- with 24 volts
for the filaments and 28 or more for the B+. The pins are separate on the
front panel jack, but usually strapped in the connector. Another way to
power them is to use a pair of 12 volt gel cells and charge them up between
uses with a trickle charger. (Can use a 12 volt charger by switching them
to parallel.)
Go get one, but try to keep it from the closet or under the bench. Tell
your XYX it's the latest fashion shade of avocado and put it in the kitchen.
Or maybe the patio or near or in the pool. Excellent pool radio, in which
case, go with the LS-166. Betcha they sound better under water.
Barry
----- Original Message -----
From: "Mike Meador Meador" <[email protected]>
To: <[email protected]>
Sent: Thursday, August 08, 2002 10:18 PM
Subject: [R-390] Hello New to list- More questions
> I did some looking around on the 392's and was wondering what the
> disadvantages are on the 392 compared to the 390/390A's. I can see 1)Needs
a
> power supply 2)"tighter" to work on 3)Not as good lookin. Are there any
> other draw backs to the 392? I'm also wondering how I would connect both
the
> Yaesu FT-990 and the (390/390A/392) to the same antenna. Thanks for
helping
> a newbe:) , Mike
>
>
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