Hi Curt,
I think the issue with my set-up here is the inconsistency in shielding
between the PTO can its attaching metal base. For whatever reason(s) it's
being compromised as the set warms-up, and that is causing the intermittent
irregular creep in frequency...
As for the hole at the back of
Hi Steve,
Well, keep in mind that the PTO in the just-plain-old R-4 (such as I have
here) is a TUBE-type. The PTO in my T-4X is solid-state, with all of the
componentry mounted a small circuit board that is itself, in turn mounted
inside the enclosure.
As for the active devices used in Drake
Does the SPR-4 take the same crystals as the SW-4?
Tnx,
Bob___
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I need additional space in my radio room for extra projects, so here is my
list at this time.
Drake R4C receiver, serial number 21155, 160 thru 10 meters, unmolested,
original manual, normal operating filters for, am, ssb, cw, and cw narrow.
Original shipping box with matching numbers and
Blew a 50K Bias resistor in my L-4B power supply. Change resistor and check all
wires , resistors and diodes. Check ok. Fire up the
Amp and have no reading on the Plate Volt Meter? Any help Thanks.___
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Hello to the group.
TR7
A: I have reseated all the boards.
Stored unit for nine months. Hooked up yesterday.
Digital freqs way off, 12xxx while in 20 M position 5xxx while in 40 M
position...etc
Did have some signals (SSB) input on the 20 M position, but mechanical
dial says way off
Some things to check (in no particular order):
Make sure all the boards are properly seated. If oxidation on the Molex
connectors is persistent, cleaning/DeOxit treatment should be used. Copper
grounding fingers should be clean and make good contact with the frame. Also
check for deformed female
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