Since NONE of this stuff is offered for sale ANYWHERE on the web, this should qualify as a NON-COMMERCIAL use of this CORE.COM webspace. So there.
All of the stuff you see here REALLY exists. The local walk-in trade buys all I can make of some items, others are on the shelf in small quantities. Until I come up with a viable sales channel, and Installation Sheets for some of them, you're just plain out of luck, unless you carry the thing in here like everybody else.
CLICK ON THE THUMBNAIL IMAGES FOR A LARGER VIEW.
| This board replaces the failure-prone 10-Watt Zener Diode used to bias medium-sized grounded-grid amplifier tubes like the 3-500Z, 8877 and 3CX3000. The voltage this board provides is higher than the original zener. The factory zener voltage was chosen for SSB operation. This board raises the bias voltage, vastly reducing the tube temperature and heat stress associated with AM operation. The 3-Amp diodes shown are nearly poof-proof when used with 2 tubes. | ||
| The holes in this board will accept 6-Amp rated rectifiers, suitable to use with up to six) 3-500Z tubes. This picture shows how the mounting holes line up with the top two screws on the SB-220 rectifier/meter board. | ||
| This one replaces the scorch-prone "Auxiliary Audio ", or "BA" board in the Tram D-201A and later versions of the 23-channel D-201. All the parts have larger ratings, and run at a lower temerature. The proximity to a large, hot 6L6GC tube still causes this one to darken a little after a couple of years' daily use, but the components all run cooler, and will last longer. The voltage regulator has a current limit built in, and a protection diode to prevent damage to the board in case high voltage "leaks" into the low-voltage parts of the radio. It comes with new, shiny pins already snapped into the two sockets. You unsolder the old, tarnished round pins from the main audio board, and pull them out with the old BA board. In goes the new board, new pins and all. | ||
| This is our outright replacement for the "Train Wreck" factory-original PLL/Channel Selector in the Browning Mark IV transmitter. It covers 32 channels below channel 1 up to channel 96, and does it 5 kHz per click. The RC channels are all there in sequence, so "We don't need no steenkeeng PLUS TEN sweetch!". Oh, and by the way, if you are inside the USA, you are not even allowed to read this stuff, let alone operate a radio transmitter that has this thing inside it. On the other hand, if you are outside the USA, it's okay to look at this thing, since you CAN'T buy it here, anyway. | ||
| This is the rear view. The whole thing fits behind the channel window on the front panel. It leaves a gaping hole in the chassis deck behind the meter where the original 'tin can' PLL used to be. Better air circulation, I say. | ||
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This is an internal keying relay that adapts "10-meter" ham radios to conventional ham-type amplifiers. This thing installs inside the radio. You add a "phono" socket to the rear of the radio. This board wires to the jack, and an audio-type jumper cord goes to the "phono" socket on the rear of the amplifier, marked "Relay", or "VOX". Much slicker than a foot switch. It operates from the INTERNAL transmit voltage inside the radio. It does NOT attach to the mike socket, at all. | |
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A close-up of the version that goes into a tube-type radio that does not contain 14-volt DC power. It is powered by the 6.3 Volts AC that lights the tube heaters. That takes more parts. | |
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No, It's not for sale. At all. Besides, it's on 10 meters, right? | |
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What a hoot, huh? Besides, who would pay $200 just to throw out their frequency counter and quit worrying about a Mark III ssb transmitter being on the right channel, anyway? | |
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Yeah, I was hard up for cabinets. I should put the old analog guts that came out of it on EBAY and see what happens...... | |
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This one goes PIIIIIing when you key the mike. Fades off in a pretty convincing way. Fools a lot of 'em. | |
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A closer view. So you can see the part number scraped off the chip. I copied this circuit from one that had no chip number. Fair's fair. If these ever make it onto EBAY, you can buy one there and figure out what the chip really is the same way I had to. | |
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This board installs inside a Mark III SSB transmitter, and raises the drive level of WIMPY sliders, like the Siltronix 80/90, and the Glenn 326-G. This one is probably CLOSEST to prime-time of all these gadgets. As soon as my courageous crew of volunteers have installed one in their radios (and, above all have PROOFREAD my instructions) this one will appear on EBAY, but not before. | |
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This board allows the use of a slider on an older AM-only transmitter, like the Browning Mark II, or 23S9. Glenn sold a similar gadget to go with his 326-G slider. Yeah, I have a few, but the installation instructions for this one just aren't a high priority, right now. Getting the crystals for it are still a headache, and an expensive one at that. | |
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