$129.0 Buy It Now or Best Offer
free,30-Day Returns
Seller Store kw7t_cw
(2948) 99.4%,
Location: Grand Junction, Colorado
Ships to: US,
Item: 325928529520
Restocking Fee:No
Return shipping will be paid by:Buyer
All returns accepted:Returns Accepted
Item must be returned within:14 Days
Refund will be given as:Money Back
N/A:N/A
Type:Ham Radio Transmitter
Number of Channels:807
1625:1625
Band:HOMEBREW
I make these to order so please allow about 10 days for shipment, once purchased. This is a simple one tube, one control 807 cw transmitter for 80, 40, 30 and 20 meter cw. It uses plug-in coils for band switching. This is low power QRP. You will need 6 volts ac or dc for the filament and another B+ supply for the plate circuit (50 to 200 volts dc). On request, I can build these with a 807, 1625, 6l6, 6V6, 6U6, 6BG6, 12L6 or 12V6 tube, same price. Just let me know, when purchased. Power output depends on the power supply you use for the operating plate voltage. With 50 volts dc I get about 100 milliwatts RF output. This circuit has been tried and tested, so no reason why you couldn’t get several watts out if you run 150 to 250 volts dc for the high voltage plate circuit. It goes without saying, this circuit can be lethal when power is applied, if you do not treat it with the same respect you’d use with any ham radio transmitter, where voltage exceeds 50 volts or more. I used the old traditional slatboard style for this transmitter, so as to keep the 1940’s nostalgic appearance. The paint is hammered gray, but you may have the natural pine wood appearance with clear urethane, on request. For that matter I can paint the slatboard chassis most any color that can be had at the paint store, so please inquire if you have a specific color request. Coils and QRP crystals for the 4 bands mentioned are included with this listing. This item will be freshly constructed when ordered. Most all parts are new or nos, with the exception of the vacuum tube and crystal holders, which may be used items. I guarantee this transmitter will work if properly connected to a power sources and your ham radio antenna. A good earth ground is always essential for best performance. A hand sketched schematic diagram of the circuit will be provided with your purchase. No power supplies of an kind are included with this item. Shipping to the United States only.
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