My Kuhne up-converter 2424A was returned this week after succesfull modification. I made some contacts that showed improved stability, even with the higher power-levels.
So, now i could start testing my dual-band helix feed, together with a portable setup with 60cm offset dish on a tripod. Everything experimental and only practical tests done today.
Several parts are re-used from the home-station. Downlink (Octagon LNB with mini-GPSDO and IF 435MHz ) was first set up and dish heading optimized. Using temporarily RTL-SDR for this test.
Last test was TX Uplink-only (RX via Amsat-UK webSDR) with the combined dual-feed at a power level of abt 10-12W ( estimated 10W at the feed). FT817 used for driving the upconverter. First results showed strong uplink of some dB above the FSK-beacon, so a nice signal. Real measurements still to be done but this seems to work OK for portable use, as intended.
Checking the up-and downlink combined (full-duplex) will follow after finishing the (compact) portable equipment construction that will serve demonstration purposes as well. My dualband patch-feed is also waiting to be tested. Hope the weather stays OK...