For Sale Hickok 752A tube tester. One of the last models made and probably the best ever made by Hickok. Tests TX tubes up through 811 and 6146. Both sections of dual-section tubes like 12AU7 can be tested at the push of a button-without any setting changes. Tests VR tubes. Tests virtually all tube types from 4-pin through Nuvistor including all the weird compactron types. This one is from an estate. I tested about 6 tubes and this seems to work fine. Roll chart is good. But some switch cleaning and socket contact cleaning may be desirable (or the old back and forth--insert and remove tube 12 times deal). Cosmetically clean and original. The case covering is in good shape. No rust or other problems. With manual copy and copy of tester settings list. Nice. $379
Hickok CA-5 Universal test adapter. Hickok testers without the compactron sockets and nuvistor sockets can use this adapter to test those tubes types. So this would be for your 533 types and the 600 series. This plugs into the 9-pin socket. This one has a couple marks on it but is otherwise in excellent, almost like new condition. $69 ITT Mackay Marine 3010C HF receiver. This famous HF receiver uses a unique circuit with extremely high gain in the front end. Collins mechanical filters are used for narrow and medium filtering (both are present in this one). MC and KC are displayed separately. The KC display uses a long reel of what looks like 16mm film. As you turn the main tuning knob, the "film" spools from one reel to another, across the window, with color-coded khz markings on it. Built like an absolute battleship with a CAST aluminum chassis with each stage isolated from the other by cast aluminum walls. Naturally, there is no cabinet since this was part of a much larger console aboard ship. But it is standard 19 inch rack mount wide by 10.5 inches high. This one is in good cosmetic condition inside and out. I powered it up only enough to see that it does not smoke and lights up as it should. I noticed that the right-angle chain drive on the MC display has a loose chain, which makes the MC numbers not display properly in the little window. So that will have to be tightened to adjust the chain. The KC film dial is in great shape and is not fragile. Probably one of the best tube receivers ever made. Competes on equal footing with the R390A. A fun and unique radio for your collection. With power cord. No manual. $595 Tube testing power supply? I think that is what this is. Picture this: This thing is commercially-made (or maybe military), 17.25 inches wide, 11 inches tall and 7 inches deep. It's painted a uniform blue-gray wrinkle. The left two-thirds of the front panel have the knobs and switches, with a row of 3 meters across the top. The right one-third of the front panel is occupied by a hinged, windowed door that opens up vertically. The door goes around the corner of the chassis and is 5 inches wide on the front and on the side. Lifting up the door (which has an interlock on it), we see three ceramic-mounted connections marked +1000 +250 and GRID BIAS. Two inches below these connections are three banana jacks, red-black-red, unmarked. And below them are three binding posts-all black My guess is that the binding posts were used to mount some sort of socket adapter and supply filament voltage. The controls to the immediate left of the door are for filament voltage. At the bottom is an on-off switch and pilot light-marked FILAMENT. Above these is a variac knob to adjust the filament voltage. The filament voltage meter is in the center of the row of 3 and goes from 0 to 12 volts. Above the filament voltage variac knob is a meter labeled 0-500 volts AC-for what I can't say. The controls in the center are a toggle switch marked CUT OFF one way and PEAK EMISSION the other. Above that are two push-pull switches. One is labeled "IN 1 MA OUT 10 MA" and the other says "IN 3 VOLTS OUT 12 VOLTS". Finally, at the far left bottom, there is a toggle switch and pilot light that says POWER. Above that is a knob attached to a pot that says GRID BIAS. At the top, the leftmost meter in the row of 3, labeled BIAS VOLTAGE, has a 0-150 volts DC scale. On the back of this thing are 2 fuses and the power connector. So my guess is that this was used to build curves for a couple specific types of triodes (there's no screen supply). But the tube socket adapter(s) are missing. And it has some mods-the interlock switch is gone, the "1MA-10MA" pull switch is now a pot with a knob, and the blades on the power connector have been soldered-to. But it may still be usable in its original role. And certainly has lots of good HV power supply goodies in it. For the adventurer. Weighs about 30 pounds. As-is. $15 Thanks for looking. 73, Don Merz, N3RHT The information contained in this e-mail may be confidential and is intended solely for the use of the named addressee. Access, copying or re-use of the e-mail or any information contained therein by any other person is not authorized. If you are not the intended recipient please notify us immediately by returning the e-mail to the originator.(16b)
