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472 kHz Projects - Transmitters

Simple Quick-Start 1W MF TX.
Developed with GW4HXO, EIØCF & EI6DN.

472 kHz Transmitter by M1GEO
The output from this amplifier is small (around 980mV unloaded, about 290mV into 47Omega). The scope trace below shows what the DDS-60’s output looks at 472 kHz. The sinewaves are a little flat-topped but this doesn’t matter as it’s only at the driver stage.

472-479 kHz CMOS VFO for 100W QTX PA by GW3UEP
Simple stable low-cost VFO.

6AG7/807 transmitter for 472 kHz by VK1SV
No commercial radio amateur gear currently supports 472 kHz for transmitting, so a transmitter has to be built from scratch. I selected to build a transmitter using valves.

The GW3UEP 630m TX In QRSS Mode by VE2SL
By all accounts, the little transmitter designed by GW3UEP and detailed on his website, is an efficient performer and would be a great 'first' rig for 630m CW.

Creation date : 23/09/2018 @ 16:44
Last update : 16/08/2019 @ 11:06
Category : 472 kHz Projects
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