Short video looking at a trans-Tasman QRP contact. The nearest Australian coast is approx. 2225 km away (Sydney). Thanks to VK4ALK, VK3DP and co. The end of the video also looks at the final AGC configuration.
Very impressed there Charlie and well done on the VK contact and he was getting you at a good strength , The agc certainly makes a different . Well done.
Really appreciate the addition of phptos of the perf boards to the website.. thanks.... please keep the site updates with any changes you've made.. add the relay wiring as well thanks again charlie..8P4DG
Got my first reception on my rig, need to build some amplifiers tho. Currently have none at all and can just hear my IC-718 when set to lowest output power. Literally just using a SI5351, Two AD831 based mixers and my homebrew crystal filter. Feeding the output of the BFO mixer right into a headphone jack.
Hello. I have now started to develop printed circuit boards of modules for SMD installation according to your scheme, as a result, the transceiver will turn out to be very miniature. I use an online translator!
@@CharlieMorrisZL2CTM hello, some modules turned out to be very small! mixer 12.7x22mm. quartz filter 22x24mm. if amplifier is 18x21mm. this is when using smd condensers and 0805 resistors 👍
Thanks Brian. It's a halfwave dipole sitting 1m above the roof line. By no means a perfect antenna that's for sure. One of these days I'll get a big 5m plus pole and elevate the center.
@@CharlieMorrisZL2CTM good evening gents, i might have lost this info while watching the video: what was the frequency at the time this small qrp? Thanks a lot and as usual great video
Hi. Do you have already compared your homebrew mixers with the IC-version? How do they perform? I'm currently waiting for my license and I'm no eletrical engineer, but CS. I've an AD9850, bought some time ago, and experimented with it a little bit in combination with a some years old AVR Butterfly. I'd like to start with some small 80m CW hardware when I'm allowed to transmit. My idea is to connect kind of your 80m CW rig transceiver with a small audio controlled ptt circuit to a smartphone app. Would be a nice combination for SOTA in the Alps. Your works looks simple enough I can understand good enough and work on, although I've some difficulties to decide on which parts and way to go. Well I'd like to use the butterfly and my ad9850 but it generates only a single sinoidal signal for VFO. So I'd need at least anything to replace 2nd clk of Si5 for BFO. At the moment I'm thinking of a fixed CO circuit and using a 700 Hz different IF. Would this work? Not sure with the crystal filters and the freqs. I've only done some experiments with aircoils, standard small signal transistor amps, COs, and measuring with the tiny vna and a cheap USB SDR receiver up to now. Or do you have a nice idea for the BFO I could google on? 73
