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Author Topic: When the 807 was young  (Read 17922 times)
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KC4VWU
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« Reply #25 on: August 15, 2010, 12:54:49 PM »

Hey Al,
            Catch up with K5UJ, I think he was looking for some info on the Eldico.

Phil
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w1vtp
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« Reply #26 on: August 15, 2010, 09:08:31 PM »

Hey Al,
            Catch up with K5UJ, I think he was looking for some info on the Eldico.

Phil


Rob and I have been corresponding Phil.  He has a copy of the schematic.  At some point in time it was going to show up on this forum, I think.

Anyway, I'm jealous of Rob.  When I bought the manual, I asked the guy who sold it to me and someone else got the transmitter.  Shame the transmitter and manual got separated but at least it's my partial gain.

Al
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k4kyv
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Don
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« Reply #27 on: August 16, 2010, 05:23:49 PM »

Remember when in popular amateur radio slang a bottle of beer used to be called an 807?  I suppose the shape of the tube and that of the old long neck bottles did have a slight resemblance, and so did the post WW2 brown "mud" bakelite tube base with the traditional amber colored glass of a beer bottle.

My kid works at a local microbrewery.  I have mentioned to him that they ought to release a line of brew under the name "807", and make a point to get it to hamfest venues. But it's probably too late.  Like class-C amplifiers, point-to-point wiring and separate transmitters and receivers, the whole concept of the "807" would be lost on 90% of to-day's amateur radio community.

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Don, K4KYV                                       AMI#5
Licensed since 1959 and not happy to be back on AM...    Never got off AM in the first place.

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Pete, WA2CWA
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« Reply #28 on: August 16, 2010, 05:39:26 PM »

You guys must have missed this TR-1 thread from several weeks ago:
http://amfone.net/Amforum/index.php?topic=24779.0

I would suggest Al, if you plan on keeping that manual, to take the original schematic to a copy shop and get a full size replication and/or a more flexible reduced replication. The original schematic was printed on acidic-type paper which ages very badly (paper keeps getting darker and darker). As it does, the drawn lines slowly fade into the darkness.
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Pete, WA2CWA - "A Cluttered Desk is a Sign of Genius"
Detroit47
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« Reply #29 on: August 16, 2010, 06:28:29 PM »

How about the VT-100 going to war. I just love the wax on the pins.

John N8QPC


* VT-100.jpg (602.5 KB, 2277x1518 - viewed 483 times.)

* Vt-100a.jpg (689.74 KB, 2277x1518 - viewed 467 times.)
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Detroit47
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« Reply #30 on: August 16, 2010, 08:08:44 PM »

'At thar is a Elkin super 12! Actually,Phil
Those Elkins were one of the best engineered CB boxes around. When it was made it used 6DQ5B's. It was the only grid driven CB amplifier I ever saw that was actually neutralized. They were also unique in that their mobile amps used ferrite transformers, and a much higher switching frequency than others. Believe it or not they looked good on a spectrum analyzer when tuned up properly.
John N8QPC
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KC4VWU
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« Reply #31 on: August 17, 2010, 01:01:36 PM »

John,
         Being from the general area, I know both of the guys who produced them. It probably goes back several years even before I was born, but I do know the first ones used 1625's. As time went on, they switched to the DQ6B octal based tubes in 6 and 12 volt heater ratings. ESC at one point in time became a dealer for Zenith, which oddly enough used the 6 and 12DQ6 tubes as horizontal output amps in their t.v.'s. Makes one wonder if they had a high warranty claim rate on tubes.

Just some interesting local lore FYI.

Phil
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Detroit47
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« Reply #32 on: August 17, 2010, 02:34:14 PM »

Phil

I still see them come in once in a while for service. I never saw one with 1625/807. I have seen all the variants though Boomer, Loundenboomer. But none with those tubes, I still say they were a well built box to still be around.
John
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