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Those that have more experience with testing these points in the SX100 or any other radio that normally uses a VTVM to check DC voltage.....can I do this with my oscilloscope? My probe is a 1x & 10x.

I’m with Tom. Use shorter shafts at both ends and use a flex coupler.

Is there enough room for an adapter plate? Is because the balls were missing in the old one? If you remove the rear adjustment screw, (if it has one ) you may be able to replace the balls

Possibly a flexible coupling shaft or maybe you can rig up a shaft with a universal joint in it? Tom W3TA Sent: Wednesday, April 3, 2024 8:17 PM To: [email protected] Subject:

I am now three caps in.? None fit.? This one fits but shafts do not line up.? This must have Been a custom order cap for hallicrafters. Anyone got any ideas now?? Looking for a cap is officially

Hmm.. I honestly do not know. It does not appear to be cracked. Although that is a very common failure of trimmers. FT101 for example. If not adjusted in many years, They will crack when someone

OK C, I guess I am beating a dead horse, but: I am one of those guys that just gotta know exactly why something fails, along with the failure mechanism[s]. In some of my working days you couldn’t

Ok. Nice. Sounds like you're making progress! Both mine are on back burner now. I have to wait for parts to resume work. I get the new load cap first. W0VMC made me one. He took a slightly larger cap

The band opening should start MAY/JUNE 50.400 MHz It should work? with my SR-34 + Teletec DXP-180 amp and Cushcraft 5-element beam! -- 73/Rick W4XA __________________________________ All posts are

The chirp is only for a nano second... it is not a oscillation as you described. It's a blip chirp, haha. I was able to adjust the PIN 3 bias voltage down to factory specs by increasing the resistance

On My rig if you turned the load knob it would vary the chirp. It was worse when the plates made contact. Did you try to loosen the mounting screws while listing to the chirp? Yes. The plates are

Thanks, I sprayed a piece of construction paper w/Deoxit and cleaned all 3 sections of fins... Prior to cleaning I could not find any visible shorts. With the radio powered off I measured the

I agree and bet that the issues are indeed related, but I would stick with the designed values on the parts list and schematic.

yes. The plates are shorting. This radio was shorting on the back section. About 2 to 3 plates in. I could set it so the rig was oscillating, then, using a plastic tool, spread the plates and noise

See attachment for details - Iowa Antique Radio Club and Historical Society's annual Antique Radio / Vintage Electronics Auction, May 4, 2024

Just an observation from my experience with Collins S/Line gear. It seems that over time, the ceramic trimmers seize and fail to turn without exerting a high twisting force. With enough twisting

There are two main causes for the ceramic variables failures. Long time storage in humid conditions and improper chassis cleaning methods. ________________________________ Sent: Wednesday, April 3,

They are originals. I checked the band colors and one is a 1meg and the other 820k. Neither tested anywhere close to these values. Thankfully I do have something in which to replace them. According to

Don. The cap was open.? I understand these are known to just up and fail.? Its listed-on Walt's document.? ?I am unsure why they fail. Just age?? Maybe corrosion?? I opened it up and it appears

I guess I'm going to have to cut me a 6 M inverted Vee.? I think I'll make a 10/6M arrangement... 73, -- Justin B. KI5GKD