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Author Topic: Transmitter with pair of 807 finals ? Knight, Globe, who else built 'em ???  (Read 1280 times)
WL7PM
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« on: January 25, 2019, 02:18:36 PM »

  Long time back, around 13 years old I had a cheap  crystal controlled  transmitter, used a pair of 807 finals,  made around 75 watts CW. I think I paid about $25  for it, worked a couple stations across town on a light bulb 'dummy load'.
   Off to college,  parents dumped all my radios... 
I do not remember the   manufacturer of my old TX, anybody have some historical background,  for me to  track  such a unit down ?
The rig was probably  CW only,  and I think it might have  had a 6AQ5 driver.
 The  cover was  one piece expanded metal, rounded  sides, and the  whole chassis  could " slide" out of the cover.
  If  anyone here in Boat Anchor section  can help jog my memory, I'd  appreciate any 'clues'.
 Thanks, and best regards.
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KB2FCV
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« Reply #1 on: January 25, 2019, 02:46:20 PM »

I know the Johnson Adventurer ran an 807 final and was crystal controlled.. but I think it was only a single final.
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W6BP
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« Reply #2 on: January 25, 2019, 03:39:40 PM »

The Globe Chief 90 used a pair of 807 finals and a 6AG7 oscillator/driver.

http://www.ae5d.com/pdf/chief.pdf
« Last Edit: January 25, 2019, 03:42:10 PM by W6BP » Logged
HAMHOCK75
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« Reply #3 on: January 25, 2019, 04:01:44 PM »

Globe Chief Deluxe also had that tube lineup.

http://ham-azing.blogspot.com/2013/02/globe-chief-deluxe.html
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WA4JQS
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« Reply #4 on: January 25, 2019, 06:53:24 PM »

i was going to say the WRL Globe 90. and the chief both ran that tube line up. and were AM and CW rigs. I never had an AT 1 heathkit so do not know what it ran 73 Tony WA4JQS
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W6BP
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« Reply #5 on: January 25, 2019, 07:43:57 PM »

i was going to say the WRL Globe 90. and the chief both ran that tube line up. and were AM and CW rigs. I never had an AT 1 heathkit so do not know what it ran 73 Tony WA4JQS


In its default form, the Globe 90 was just a CW transmitter. The manual I gave a link to above has a set of instructions for rewiring the transmitter to accommodate an external plate or screen modulator.
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WD0GOF
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« Reply #6 on: January 25, 2019, 08:04:31 PM »

Hallicrafters had a long line of xtal controlled transmitters using the 807. The HT-6, 8, and 17 had a single 807 @ 25watts. The HA-12 and HA-14 used a pair of 807's to produce 50 and 45watts. The units varied from a single xtal up to 4 switchable xtals.

https:/wd0gof.com
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JS6TMW
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« Reply #7 on: January 27, 2019, 02:25:52 AM »

i was going to say the WRL Globe 90. and the chief both ran that tube line up. and were AM and CW rigs. I never had an AT 1 heathkit so do not know what it ran 73 Tony WA4JQS

It used a 6L6, with link coupling. I believe the 6L6 is an audio beam power tetrode but was widely used as a driver, and as a final amp in HF novice transmitters. In any case, the AT-1 was cheap way to get on the air back in the 1950s.
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