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Flip the drawing and you could have a push pull amp driving another stage. Walt Cates, WD0GOF https://wd0gof.com/Hallicrafters A majority of acceptance is not proof of

Thanks Jim, I must be visually wonky. That is bad. I know I should write the numbers down and compare apples with apples, but… a real goof here. Yes it must be a real step-down. 150 VA seems

DonWith a primary resistance of 85 ohms @ 12 Henrys and a secondary resistance of 0.6 ohms @ 0.055 Henrys how could this possibly be a step-up power transformer?? At 7 pounds, I would guess it would

I am not really interested in further characteristics of the transformer or building anything with it. I would like to know what radio it was used in so I can make it available to someone who needs

Yes Walt I consider the turns ratio to be a primary characteristic of any transformer, but voltage ratio is usually much the same.. assuming I was guessing that you just measured it and have it

Don, did the photos come through on the original message. If they did, all the information I have is there. Walt Cates, WD0GOF https://wd0gof.com/Hallicrafters A majority of acceptance is not

Turns ratio? from. Sergeant Friday From: [email protected] [mailto:[email protected]] On Behalf Of waltcates via groups.io Sent: Sunday, December 1, 2024 5:08 PM To: HALLI

That's the oneSent from my Galaxy

Still cleaning out cabinets. I have a transformer and cannot remember what it goes to. It has a Hallicrafters part # 050-004270. It has another number that may be a manufacturer's in-house part # or

Citation 2--- That’s a monster with a ton of iron! ..now that I see

In the drawing, B+ entered T5 thru the bottom of the primary and out top of the winding to supply B+ to the 6R7 plate and everything else. A couple of you here suggested troubleshooting tries

There is any one with a Hallicrafters A-84 ? This was my first Hi-Fi amplifier when I was 16, and always wished to listen to a pair. Only 10W with a pair of class A biased, triode-connected KT66s

Hi Richard, A Citation II ! This is a special amplifier: video pentodes used as input + drivers, with multiple feedback loops. I have one that waits to be “restored”. See attached. 73,

Its been a while but I believe it was a Citation II. Also had several Dynakit 50 Watt amps. Had to get rid of them all. I miss the theater speakers. They were c.1936 RCA Shearer horns from a

You are right and my memory is bad. It is the KT-66 that is the equivalent to the 5881. The 6550 is the KT88. Both tubes are intended for Ultra-Linear or McIntosh amps where the screens must have

Hi Richard, Just curious: was your HK amp a Citation II model ? Just a remark also: this is the second time I see the 5881 tube referred as the US equivalent of the KT88, or the reverse,

MFJ part # is mfj-icp-120 or Mfj-icp-240. Bob W4JFA wrote:

MFJ has a step start. They make one for 120 and 240 volts. The manuals with schematics are on line. Bob W4JFA [email protected]> wrote:

I don't know how quickly the B+ comes up in the amplifier. I had an HK amp for years (used on a pair of RCA theater speakers). The KT88/5881 is designed for the Ultra-Linear circuit where the

eBay item #?404481804963, under $10JimLogic: Method used to arrive at the wrong conclusion, with confidence.? Murphy