Hi,
The deal "killer" in the TR-3 is the SB filter. They often go bad on
one sideband, still get some thru, but way low. Check output on 20m and
on 15m, they should be close, and above 125 watts out. Actual value
could be more (hopefully), but will depend upon alignment. Normally 15m
output will be a little less than on 20m, but not more than say 20 watts
less, if the final tubes are reasonably good. You should be able to
load up to about the same plate current on both bands.
Other than that possible problem, the TR-3 can be a good rig for SSB
operation, usually at a good price, also. S-meter often seems stingy,
just turn up the AF gain if needed, signals are there. Definitely check
out the p.s. and replace the bias filter cap at least.
73,
Al, W8UT
www.boatanchors.org
www.hammarlund.info
"There is nothing -- absolutely nothing -- half so much
worth doing as simply messing about in boats"
Ratty, to Mole
On 12/11/2012 12:09 AM, lane denune wrote:
Hi Guys ; Considering a fully functional TR-3 from the owner of 15yrs.
I've been invited to try it on the air at his shack before I take it.
Being a relative newbie to Drake equipment, is there any particular
areas to consider with the TR3 other than the obvious and general
operating condition?
I don't recall anything negative in particular about this vintage
radio. I will upgrade the power supply and finals..Anything come to mind?
Thanks 73 de n8aft.
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