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It seems to me that most 60Hz power transformers will perform OK on 50Hz although they may run hot. -- Richard Knoppow Los Angeles WB6KBL SKCC 19998

Don, please read the .pdf more attentively. Just at the right of the GRY – ELECTROSTATIC SHIELD, what do you see ?? 73, Jacques, VE2JFE in Montreal De : [email protected]

Since the radio is in the UK, it would need to operate on 50Hz mains. Looking at the data, the Stancor appears to be for operation on 60Hz, whereas the Thordarson catalog states that the 22R05

Jacques, as I read it this is a 60 Hz , nota 50 Hz unit Don Sent: Thursday, May 30, 2024 1:59 PM To: [email protected] Subject: Re: [HallicraftersRadios] Halicrafters SX17

Another possible replacement is a Hammond 372DX. See attached. 73, Jacques, VE2JFE in Montreal De : [email protected] <[email protected]> De la part de don

Jim, are these 50 cycle ? Sent: Thursday, May 30, 2024 11:18 AM To: [email protected] Subject: Re: [HallicraftersRadios] Halicrafters SX17 transformer John There are various

JohnThere are various catalogs from replacement transformer manufacturers, I looked at STANCOR and THORDARSON, for example.? There are others.? I have not looked at my junque box so there are still

I completely forgot about noting the current on the low voltage windings! I added up the heater currents and arrived at the same 3.9A that you did. In addition to this, according to the data-sheet,

JohnCathode current flows through the cathode resistor developing the cathode voltage.? Knowing any two one can calculate the third using Ohm's Law. Using the maximum plate / screen grid currents

Thank you for sharing the images. I have been looking at the table in the manual and diagram as well as valve data sheets to determine the spec of the transformer. The rectifier is connected to its

Here is the history of all printings of the RDH, the 1st edition is listed as being published in 1934.https://www.qsl.net/vk2dym/radio/designhandbook.htm Clicking on the "HOME" button takes one to a

RichardYou are most welcome.Now for your viewing pleasure is a PDF copy of RDH 1st Edition, circa 1932, all 47

Thank you for the link. This is an absolutely phenomenal book, there will never be another like it. I am not sure how many editions it went to, the later ones with supplements. I bought one

The following link will get you a searchable PDF copy that is "only" 36MB and includes the supplement, after the

Nice photos! Logic: Method used to arrive at the wrong conclusion, with confidence.? Murphy

John, I expect you know this, but the transformer you need for your 230 v,50Hz won’t be a “replacement” ?of the original [ oops I meant the original *US* transformer ] ; it will need more iron

John, If you need any good images inside or outside of the SX-17 I have one in excellent condition and long time ago, I dumped all my images of my SX-17 in the photos section here:

Comments in RED Logic: Method used to arrive at the wrong conclusion, with confidence.? Murphy

I think your AVO 8 is a 20Kohm/Volt meter. Most modern DVM or electronic voltmeters are about 10 megohm fixed input resistance. Very old VOM's are often 1000 ohms/Volt. The reading you get depends

Thanks. I got my information from a couple of online articles which mentioned 110V as well as 117V, but I appreciate that mains voltages vary and measurements vary depending on the instrument used. I