Description:
Vacuum tube-based amateur radio equipment.
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803s in push-pull / parallel
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I have started building a 7-MHz AM trasmitter with four suppressor-modulated 803s in push-pull-parallel. I expect to get nearly 400W of carrier power.
My only concern is plate voltage. As a matter of fact I plan to use a power supply that delivers about 2800V under no-load conditions, which is... more »
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Famous Ebay Seller at Dayton Hamvention - Martyn Allison
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The famous Martyn Allison Radio Mart will be at the Dayton Hamvention this year. Flea Market Spaces FW1519 Paid & Reserved Martyn Allison Radio Mart FW1520 Paid & Reserved Martyn Allison Radio Mart FW1521 Paid & Reserved Martyn Allison Radio Mart FW1522 Paid & Reserved Martyn Allison Radio Mart... more »
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DX-100 or Apache?
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Hello All,
I'm looking for an AM/CW rig in the 100 watt class, and may have a choice between a Heath DX-100 and a Heath Apache. In looking at the specs I could find on the two, the Apache looks like the better choice. What do you think?
Cheers,
Brian Ex: W5BRO, K6UCD
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Johnson Invader VFO knob needed
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Hello to the group.
Am looking for the main VFO tuning knob. It is a vernier knob with a graduated skirt. Anyone who can help please email.
Bob Tetrault
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Cleaning
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I am cleaning an assortment of transmitters and receivers. Most have
wax residue in ventilation holes. I have tried using several cleaners
and soaps with a soft tooth brush and hot water. I can't find my old
style stiff pipe cleaners, only the new soft designer color ones. I
am going to try and find a store that stocks the old style ones.... more »
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Help IDing this radio
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So I Have what I think is a Heathkit 6 Meter lunchbox also known as a
HW-29 / 29A but I cant seem to find any that look like the one I have
Here is a front and back shot.
thanks Chris
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Rbc-5
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Does anyone know a website that I could acquire info to restore my RBC?
-- Ted Breaux
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WANTED; cross needle SWR meter
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Guys, I'm looking for a cross needle SWR meter useable on the HF amateur bands. I'm working on installing an HF mobile in my car. If you have one for sale or know of one available please let me know. Thanks for any help you can provide.
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Putting a date on waxed or painted electrical wiring
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I'm attempting to determine the approximate age of a device I have by it's wiring since there are no other identifiable marks. While it's not actually a rig (it's an old electric powered film security camera), I feel this is the appropriate place to post given the expertise of the Ham community.... more »
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