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I'll have to confirm tomorrow if they are in the same spot. I think they are but if they aren't it is really, really, really close. Yeah ALC is one of those obscurities I need to better familiarize myself with. It does a quick and complete deflection when checked during tune up. I can't say...

....and it's now working again smh. Don't know what changed.

Lol we're on the same brain wave. Yeah I tried that before my original post. With no change unfortunately. I also opened her up to make sure that a cap or something didn't let loose under the final section and everything looks normal. That's what got me thinking about the driver tube but that...

One Raytheon, one RCA. Here is the Ebay description: "This auction is for a pair of 6JS6C ham radio amplifier tubes..One tube is Raytheon & the other appears to be RCA.. I tested these tubes in a Yaesu FT-101E..The output showed around 85W on the lower bands 80,40 & 20 & roughly 70-75W on the...

I don't fully understand the relationship between the driver and PA tubes so here is a question. While the PA tubes are new used, the driver is original. Would a weak driver cause the symptoms I'm seeing?

During the PO tune up process it has you key with the carrier at 4 and then adjust the preselect for max output. Then adjust the loading for max output. Then adjust the plate for max output. Then repeat with carrier at 6, 8 and finally 10. Yesterday it would adjust preselect for max, then the...

Well that was short lived. Now, after running through the receive tuning I'm having an issue with loading. When you adjust the loading knob you no longer hit a peak and then dip. Now it increases until the knob bottoms out at 10 with no dip. Output increase is minimal during loading. Output has...

I appreciate the advice. I think those tubes are original to this radio (only one owner - besides me) so I'll need to get on that. I'll need to track down a 10k half watt. I only have 2 watters at the moment (restoring a tube radio). So, I'll swap that mica in the plastic sheeth and R17. If...

Well I discovered that functional tubes need to be installed in order to get an i.c. value on the meter. The second thing I discovered is the PA tubes in mine were dead. The radio is currently operating. The steps I went through are as follows: 1. Installed new relay and tested without all...

Well that significantly complicates things. It seems like finding a matched set is like catching two rainbow trout with the exact same pattern. I'll probably have better luck catching a leprechaun riding a unicorn than I will finding a matched set lol! So, that aside, is there a solution once...

Unfortunately there's no one near me that I'm familiar with that has access to a tester. I picked up a weak but functional set of PA tubes that arrived today. Figured it would be a good idea to have a cheap set for testing if nothing else. A known quantity as opposed to an unknown one. I don't...

Found it. So if I understand correctly, if there is a meter related issue I should see a drop in DC voltage at the resistor once keyed. If the problem is relay related there should be no change since the relay isn't functioning? I'm also assuming the tubes need to be in place for the test?

Thank you very much. I should know by tomorrow evening if it is relay related. That's when the replacement arrives. Is the shunt resistor you're talking about visible in any of these pictures?

I know looks don't necessarily tell you anything but it looks clean to me.

...or is this where it goes?

I started a "conversation." Is that the same thing?

I appreciate the reply. I purchased the replacement relay set you are referring to on Ebay a few days ago. It gets here Tuesday so I'll know if that is the issue. I also ordered a cheap set of used PA tubes that are weak but not dead for troubleshooting. I haven't ordered a driver but might need...

Correction- I do have HV (700vdc).

Thank you for the advice. I will do that as a precautionary measure. Is there a good method for confirming that this is indeed the problem currently plaguing the rig? It is missing the HV on transmit. This was checked with driver and PA tubes out though so I'm not sure if that was an accurate test.

I have a Yaesu FT-101E (late model) that initially had both transmit and receive problems but I've since corrected the receive issues with a thourough cleaning of the RL-1 and RL-2 relays. Now it receives as it should and will key and unkey properly. During the tune up process no i.c. value...