Digital Frequency Display

Nathan Wilcox · **Posted:** Jan Sat 28, 2012 1:26 am

I tried searching for this topic, but I couldn't find anything. Sorry if has been discussed before.
Anyways:

http://www.aade.com/dfd1Hallicrafters.htm

Has anyone had experience with this or similar kits? How do they perform?
Could measurements like this be done with a freq. counter as well, I wonder? Seems like it just measures the oscillator and subtracts the IF, not really sure.

Thanks!

EDIT: I have found other posts covering this.
http://www.antiqueradios.com/forums/viewtopic.php?f=5&t=183223&hilit=AADE

obbm · **Posted:** Jan Sat 28, 2012 7:20 pm

Last summer I bought a total of five kits from N3ZI. I bought blue two line displays from a Chinese vendor on eBay. The kits were under $20 each w/o display. It looks like he has raised the price this year to $25. The displays were cheap, too.

http://www.pongrance.com/ddfc-cc.html

This is how I ended up putting them in cabinets.

viewtopic.php?f=10&t=167506&start=20

They are very easy to build and LOTS of fun to use. There is a little tinkering around with the attachment to the radio.

Will be glad to advise you more.

Bill

Tubenut · **Posted:** Feb Sun 05, 2012 11:00 pm

I happen to like Nixies, and have quite a few old counters around. I designed this circuit around ttl logic to allow me to use my old nixie counters as displays for my old receivers. Works great.

Tubenut · **Posted:** Feb Sun 05, 2012 11:04 pm

Here it is, "in action" in my late night monitoring station, connected to my Hallicrafters SX-28A with a panadaptor above.

N9DD · **Posted:** Feb Mon 06, 2012 12:01 am

TubeNut - What a great picture! I'm jealous, and your nixie display sure looks nice!

I used to work for Burroughs Corporation and actually worked on calculators with Nixie displays. I believe that the Nixie tube was a Burroughs Corp. invention. I may even have a few tucked away in a drawer somewhere.

radiotechnician · **Posted:** Feb Mon 06, 2012 1:28 am

Great picture. Is that a birdcage replica lightbulb?

Tubenut · **Posted:** Feb Mon 06, 2012 2:53 am

Thankyou Tom and Steve for the nice comments. Wow, actually working for the Burroughs Corporation would have sure been an experience. I think your right about them inventing the nixie.
I see guys wrecking nixie equipment for clocks. I don't really like that. I would much rather give nixie equipment a purpose without destroying it's surroundings. That counter you see is only good to 5MHz. The board I designed is good to 30 or so MHz. I really don't care since I usually only cruze the BCB 160 and 80 Meter bands. The main thing is, that old counter now has a reason for being turned on.
Steve, your right about the Lamp, it's a repro birdcage. (good eyes)

Digital Frequency Display

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