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Barry: Per Garey's *schematics*, I see V-11 changing at #26,000 to a 12BZ6....so yours would agree with that change. 73 Peter VE7PS [email protected]> wrote:

The serial number for my TR-4 is 26040 which is presumably a Version 3 rig. According to Garey's TR-4 documentation, V11 switched from a 12BA6 to a 12BZ6 at Version 4 (S/N 27000) but my TR-4's V11 is

The main time I will suspect alignment is if a PO tried to align it to try and repair it. Steve Wedge, W1ES Time flies like an arrow. Fruit flies like a banana. Sent with [Proton

Cleaned it once. May try one last time. Steve Wedge, W1ES Time flies like an arrow. Fruit flies like a banana. Sent with [Proton Mail](https://proton.me/mail/home) secure email.

Radios typically don't just fall out of alignment so it makes sense that an alignment might not be necessary unless something weird happens. I'm almost certain I had better output - at least on the

Steve: Have you tried cleaning the bandswitch? Barry: I was not certain whether or not the radio ever worked properly for you. If a radio worked well, then failed, it would be highly unlikely for

I have at least one intermittent component, in addition to 15/10 deafness/low power out. I found some sensitivity when moving the "tower" under the 6EJ7. Resoldered everything around it and measured

Hi Gary, If there are problems with the radio, I'm curious why the recommendation is not to align it. I realize that it's easy to misalign it but if the procedures in the manual are followed, then

I did try using the low current pin and ground but that was with a separate PS, not the PS7 and the rig would not come on.? Should have used the PS7 I guess but the high current tap was easy enough

Thank you to all of you that have replied so far on this matter. As I noted in my post, the replacement units as pictured by the different suppliers are identical to the module in the repeater which

You know the bogus parts also say Icom, right? A supplier like RF Parts is very trustworthy, obviously, but if the same part can be ordered from Icom, maybe just to be sure of getting a good part you

Hi Gary, I checked this morning and I'm getting the following: 80M : 70W, XMTR GAIN saturation point is at 9:30 o'clock 20M : 50W, XMTR GAIN saturation point is at 9:30 o'clock These are both

Try RF Parts.com. They have tons of Mitsubishi modules. Terry- WB0VQP [email protected]> wrote:

Hi Ron, I thought I would pop in my 2 cents worth on this subject. I have repaired a few of these modules in the past, and I have also ordered replacements from Aliexpress without any issues but

GM, for a module replacement work I acquired an "original" part, "guaranteed", from a local seller, the end result was it was indeed an "original" part but refurbished .. So bad done also (I took

See: https://www.rfparts.com/sc1091.html [image: image.png] Seems it's now the $97.91 question. 73 de Andrew/N5ASE [email protected]> wrote:

Ron, I don't have an answer for you, just a related thought: I have an Icom IC-2100H that has effectively zero RF output, I got it as a parts radio for another IC-2100H that had a scratchy volume

This is a bit off topic in some ways, in others it's something we have tossed around recently. I have an Icom repeater that appears to have a failed PA module, it draws 10 amps and has an output of 1

It’s 40 meters but yes I’m guessing there’s a problem with the switch section.

The reason I ask the questions about 80 vs 20 output is that, on these two bands, the injection coupling coils do not matter at all since they are out of the circuit altogether on those two