Monday, June 5, 2017
Kit arrives: Preparing for 630 meters
And, although I don't yet have an antenna for that band, I am able to receive several of the experimental stations currently operating as WSPR beacons on 474 kHz using my Flex 6300 and (gasp!) triband Yagi (my 30-80m dipole is down for the summer thunderstorm season).
I have two methods of generating a lo-level signal - either with my Flex's transverter output or with a second Ultimate 3S that is not yet built. Each of these options produces less than a watt of output - far too QRP given that any antenna I eventually build will reduce the ERP back to QRP levels even with substantial power out of the transmitter.
But I have an idea to re-purpose an older 80m transmitter and that is the reason for the kit described here.
Shown below is the 630m Transmit Downconverter from MF Solutions. To call it a downconverter tells only half the story since it is also a non-linear amplifier as well, boosting a <1 watt 80m input to a 20-watt 630m output.
The kit arrived today, well-packed and with all parts plainly labeled. A 15-page manual was emailed to me detailing theory of operation, assembly & alignment procedures, parts list and even antenna considerations for medium frequencies and instructions on how to provide an optional 10 MHz reference signal.
I plan to build the kit this weekend.