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WTB: Pair of 6DQ5's for an HT-44
Subject line says it all. Thanks & 73, Jeff W8KZW
By jeffbauman · #30878 ·
Re: For Sale: Electric Radio Magazine Collection
I have a complete set too (I subscribed at about issue 7 and have been a subscriber ever since) and I refer to them often. This is quite a bargain, even with the cost of shipping these days. John K5MO
By John K5MO · #30877 ·
Re: For Sale: Electric Radio Magazine Collection
Those would be nice! I am mentioning this as an owner of many from the 1990's. For those that don't know: The title "Electric Radio" is not revealing as they all about good communications receivers ,
By don Root · #30876 ·
For Sale: Electric Radio Magazine Collection
I'm selling a near complete collection of Electric Radio Magazine from issue #1 to #404 in very good clean condition. It is missing three issues, #301 June 2014, #354 August 2018, and #399
By Scott WA9WFA · #30875 ·
Re: Resistor Color Code - RMA Old Arrangement
That¡¯s cool¡­¡­¡­ I want one¡­¡­¡­.. Tom W3TA Sent: Monday, August 19, 2024 1:41 AM To: [email protected] Subject: Re: [HallicraftersRadios] Resistor Color Code - RMA Old
Locked Re: HT-37 transformer failure due to rapid STBY-->OFF-->STBY
Yeah, the furnace in the summer thing does seem like a tangent to be sure. But the point was of course illustrating that the same will happen to a switch, relay contacts and/or even two wires twisted
By Rick W7IMM · #30873 ·
Re: SX-23 Restoration - Information Requested
Hello Bob Unfortunately I have the same problem!! Here are some pictures of what this should look like. Best 73 (HB9HPZ) Franz Von: [email protected] <[email protected]> Im
Re: Resistor Color Code - RMA Old Arrangement
Bob, get one of these: https://www.worldradiohistory.com/ARCHIVE-RCA/RCA-Service/Service-News/RCA-Radio-Service-News-1935-09.pdf pdf 2 ----- color code ^^ Sent: Monday, August 19, 2024 12:39 AM To:
Re: Resistor Color Code - RMA Old Arrangement
My dad explained it to me, a good 60 years ago, as the 'body-end-dot' system.? Only once have I found a band instead of a dot as the 'decimal multiplier'.? The thing that took me the longest to
By haywireman · #30870 ·
Locked Re: HT-37 transformer failure due to rapid STBY-->OFF-->STBY
Hi Don I took off a few layers of insulation to get that far.? The small winding partly obscured by some clear tape near the top of the "gap" is the YEL 5.0 V winding.? The 6.3V winding covers about
By HF · #30869 ·
Locked Re: HT-37 transformer failure due to rapid STBY-->OFF-->STBY
Halden, a good and most interestion shot!! I guess you have pealed back the top layer of insulation, which we see at the top. I guess it was taken more from the left side so the right looks a bit
By don Root · #30868 ·
Locked Re: HT-37 transformer failure due to rapid STBY-->OFF-->STBY
Rick, good to hear your furnace works in the summer, etc etc, But Re the switch, what is the obvious problem now, and what is causing it? I can imagine many reasons, but perhaps it boils down to
By don Root · #30867 ·
SX-23 Restoration - Information Requested
I am about to start restoration of an SX-23. ?It works but not perfectly. ?It was apparently recapped early in the plastic capacitor era but needs some cosmetic and mechanical help. ?I am asking
By bobkrassa · #30866 ·
Resistor Color Code - RMA Old Arrangement
A note about the color code on resistors in the SX-23 and perhaps other receivers of this vintage. ?The colors stand for the same numbers as in current practice but the bands are read differently.
By bobkrassa · #30865 ·
Locked Re: HT-37 transformer failure due to rapid STBY-->OFF-->STBY
Rick, here's my source for inexpensive SSRs: 5 pcs G3MB-202P on Amazon for USD $8.49.? The ones that arrived are marked "Omron".? One is enough for my experiments with the zero-crossing and
Re: Dynamic microphones and HT-44
The mic amp in the 44 is designed to achieve full power out with 0.005vrms at the mic input. To test the dynamic mic place a 100K resistor across the mic voice line and repeat the words 3, 4, 3, 4.
Dynamic microphones and HT-44
When I first got my HT-44 running, I was using a high impedance Heathkit microphone and had no trouble achieving full output from the HT-44 with a relatively low mic gain setting (around 3).? When I
Locked Re: HT-37 transformer failure due to rapid STBY-->OFF-->STBY
Halden, Well, pretty much any relay would work well.? Several years ago, I used a relay out of a parted out microwave oven to replace the hot surface igniter (HSI) relay in a gas furnace.? Those
By Rick W7IMM · #30861 ·
Locked Re: HT-37 transformer failure due to rapid STBY-->OFF-->STBY
Hi Rick, Thanks for sharing your thoughts and the reference to the article about step starts.? Many years ago, I designed step start into scientific equipment I used to make.? It included a tungsten
By HF · #30860 ·
Locked Re: HT-37 transformer failure due to rapid STBY-->OFF-->STBY
My Viking Valiant is probably a 1956 vintage transmitter. I am thinking that if,? in 68 years,? the "Bong" didn't hurt anything, it probably never will. Tom Raush W8JI designed most or all the
By Rick W7IMM · #30859 ·