Nice collection. I just bought an older house and on the wall was a heathkit td-1089 chime assembled. It was disconnected and I tested it and it operates but I dont think it is programmed correctly. I would love a copy of the programming instructions.

Email me your shipping address and I’ll pack you all the tubes you mentioned — sounds like you have a pretty good home for them. If the broken 7735 you’re referring to is the one I indicated has a shattered face, I’m delighted to be rid of it — I don’t imagine it’s good for anything other than to show someone what a tube looks like.

The WA0EDA looks like a ham call sign: WAzeroEDA; curious to know what it is.

Yes, I would agree that the good vidicons should go to someone that will need or use them. I have a 7735 (new) that I hope to use in a few years when my grandson will be old enough to learn electronics.

I would like the broken Amperex 4508 and the Matsushita S4097; the RCA K1008 if it is too worn to be useful. Your call on the broken 7735.

The unknown word on the Hitachi label is probably ‘beam’.

Thanks, Neil

Slim might have been experimenting with the glass plates for heating etchant — except he already had a nice tank with high-powered pump that could completely etch a board in about 30 seconds. I hadn’t though about SMT reflow, though — I’ll have to try out the plates and see if they get warm enough for that.

I’m not interested in selling the HeathKit.

The antenna looks to be a variation of a LPDA (Log Periodic Dipole Array):

http://en.wikipedia.org/wiki/LPDA

It’s probably for the UHF television band, but it’s hard to tell the size.

The head-end combiner looks to be an RF amplifier/mixer for a CATV
system.

As for the vidicons, I prefer Image Orthicons. There are few tubes to rival the RCA 5820.

Also, are you sure those are all vidicons? The 2AP1s sound like CRTs (and, if so, I think I could use one). The 2AP5 “blue” sounds like a
blue phosphor version of a 2AP1 (The first number is usually the diameter, while the Pn refers to the phosphor used.).

The speakers are nice, but I’d probably toss an active filter in, with an adjustable bandwidth.

As for the heating plate, Ferric Chloride etches better when warmed. Back when I was etching boards, I’d heat the etchant with a hot plate (but, never, never, never boil Ferric Chloride; you really don’t want it splashing!). Also, for doing surface mount components, you can sometimes use something like that to heat the boards to melt the solder. I’ve seen one place that uses an electric skillet for surface mount soldering.

Unbuilt Heathkits usually go for big bucks on that electronic auction place.

Indicator light bezels are cool, but are becoming a thing of the past. You usually don’t need them with LEDs.

Dave

Dan, interesting to hear you say the antenna is HDTV — that’s what Cort said also.

The timebase corrector and the headend combiner are yours. I’ll send an email to make shipping and payment arrangements.

You’re right that there’s no point asking for the HeathKit.

I’d love to have the Datavideo Timebase Corrector, as well as the Headend Combiner, and as i’m quite sure you’ll not be giving away the heath kit, I won’t even ask for it!! ;>)

BTW I, and several of my friends, use to call them Grief Kit, cause they usually caused a lot of it… ;>)

Thanks
Dan