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Yes, Op zo 3 nov 2024 22:58 schreef don Root via groups.io <drootofallevil= [email protected]>:

Gerrit, is that a universal 25-60cycle ,120/240 transformer with a switch on top? ..in the picture. Sent: Sunday, November 3, 2024 3:45 PM To: [email protected] Subject: Re:

Hello, I have here also a model. S-40B whit six original tubes. 73 Gerrit Op zo 3 nov 2024 20:42 schreef don Root via groups.io <drootofallevil= [email protected]>:

Bob, just a little OT question: what on the front makes you think it is Canadian? If it is, there would originally have been a sticker with “HEPC” [Hydro Electric Power Commission] of Ontario?,

My redraw of the S-40B schematic is in the files section:? manuals and schematics/S-models/ Hallicrafters S-40B_Rev 20190314-1.pdf. (

I have books for the S-40B from BAMA. Both Hallicrafters and Sams. While many of the changes in the B from earlier versions were to make it cheaper to build I think its overall a better

Richard, I have a Hallicrafters S-40B with an added Heathkit QF-1 Q-multiplier. The QF-1 is powered by a small separate power supply I built on a BUD chassis. I drilled a small hole to mount a

I just acquired a Hallicrafters S-40B a few days ago. Looks as if it has never been touched in 74 years. Looks like a winter project. If you would be so kind I'd like to get a copy of the manual too.

Permission granted.? Also have one for the S-40B, which you may already have from a few years ago. Regards, Bob C.

Hello Glen and all.. getting back to schematics, I previously “sent” : https://bama.edebris.com/manuals/hallicra/s38emk2sch/ which I now see is a folder and contains to

Forgot. Data sheets at: <https://frank.pocnet.net/sheets/127/6/6T7G.pdf> <https://bms.isjtr.ro/sheets/127/6/6R7.pdf> <https://frank.pocnet.net/sheets/049/6/6R7.pdf>

The 6R7 and 6T7 are rather different although they have the same base and grid connections. One will do for trouble shooting the other but the triode characteristics are rather different. Also, the

The 6R7GT grid cap was reworked earlier. The shield loom had previously been badly kinked and was breaking up.? So I cut back one inch, pushed the loom back a bit, slid a length of heatshrink over

Don/Dexter, OOPS, my error, I forgot to look at the FILAMENT!!! -- Glen Jenkins, WB4KTF, S-38E

Dan, it seems that you are doing an admirable job of tracing and documenting. It seems that the 6R7 area it the problem area. I may have missed something but have you considered the cathode cap for

Bob/Dexter question: Is a wire missing in the schematics for the Mark 2 for the B- at Pin 3 of 12AV6? ?Your note #7 indicates to find the B- there for all measurements. -- Glen Jenkins, WB4KTF,

The noise is still present when using an old set of Halli phones. It was easier to just pull and run with one 5881, power up and the noise was there, then reinstall and repeat with the other. I do not

DEXTER, Your work is AMAZING!!!!! Thank you. -- Glen Jenkins, WB4KTF, S-38E

Do you have a scope? If so do some signal tracing. \ The only schematic I can find shows the audio output stage to be a push-pull pentode stage driven via a grid transformer from a 6R7, a dual

G'day y'all.? So the SX-16 was wrapped up, just about, with the bottom cover put back in place and a final IF/RF alignment done.? Spent a good part of last evening SWLing and tuning in 20M and 40M