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Suggestion:Easiest way to check tube socket resistance with the tubes in place when things like control shafts are in the way is with a tube socket extender/test adapter - it puts the test points

M0HKG - Martin ( /g/DRAKE-RADIO/topic/104950547 ) * All Messages By This Member ( /g/DRAKE-RADIO/search?q=posterid:4400602 ) 1:06pm #76687 (

Also check out the US Navy: https://archive.org/details/NEETSModule06/page/2-28/mode/2up "Introduction To Electronic Emissions, Tubes, And Power Supplies". And I can second the recommendation for the

Get your hands on a mid-1960s ARRL Handbook. While not a tutorial, there is a wealth of practical information in there. Take your time to read and understand the simple oscillator and amplifier

Mike? beat me to it, but I was going to say the same thing.? I think the RSGB published an equal to the ARRL hand book .? I learned a lot about electronics and tubes growing up from the

I grew up reading the ARRL Handbook from the 50's-60's and the Radio Handbook by Bill Orr, W6SAI of the same vintage. They're on fleebay and might be found in larger libraries, although one near me

I appreciate this may not be the most appropriate forum for this question but as someone who grew up with semiconductors yet has a passion for radios that glow in the dark, what's the best way for

Oh ok.? Not what I expected.? After looking at the socket pins underneath the chassis, I can see it'll be difficult to access some of the pins from the underside for measurement as switch shafts

Unless otherwise stated in a manual the tubes are left in place.? Other than the heater and sometimes another element , the tube elements are like open circuits and will not make any difference.?

Just started going through my Drake equipment etc. to do basic "health checks".? Starting with the R4B, to do the "resistance tests", etc. in the manual, it's not mentioned if the tubes should be

I have a decent-condition, working properly AC-4 available that is excess to my needs. This is a mid-production (no AC voltage switch), NON-rebuilt supply. Unloaded current draw is < 500 ma. This

Robin K4IDC <RobinK4IDC@...> added the photo album TR-7 Station Liquidation N4TK ( /g/DRAKE-RADIO/album?id=293716 ) : I'm helping my friend Butch Smith N4TK liquidate his TR-7

I have a fair copy of the schematic, but I am OCD, and want a original copy of the full manual. I believe the copy of the board layouts should be better at least.? Just my OCD jumping up. I have

Greetings. I thought I would give an update on my progress. I had to completely disassemble the remote antenna switch, including the motor.? It was completely seized up with rust, gunk and who knows

Nope. Not for sale. :D When I can manage to get my scanner set up I am going to scan a GOOD copy of the schematic. 73 -Jim NU0C "Stan Gammons via groups.io" <buttercup11421@...>

I gave my pristine condition RV75 manual to my friend, Jim, NU0C. Maybe y’all can work out something. Not meaning to volunteer you for anything Jim… 73 Stan KM4HQE

I am looking for a copy of the original manual with the foldout schematics in the back. I try to locate original manuals if I can. Please supply availability and price plus shipping to my QTH with is

Yes, they look correct. Contact me @billnopic@... If you care to part with one or more. Thanks 73 Bill W4WCS

Any other suggestions? Chuck

I can't take full credit. Barry N4BUQ first posted the info. Interestingly, Tektronix appears to still use Peltola.