New Zealand - Australia QRP Contact

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.

[@F1LYS]

Always a pleasure to watch your videos. Every time a good analysis and a practical synthesis. Thank you for sharing....

[@CharlieMorrisZL2CTM]

My pleasure. I'm pleased you find them useful.

[@Paul_VK3HN]

Nice contact Charlie, Ron VK3IO is a super operator, I would describe his station as 'high performance', and he is always a pleasure to talk to.

[@CharlieMorrisZL2CTM]

Hi Paul. Yes, it was a great contact. It's not often I get across the ditch low power on 80m. Very pleased.

[@docfoot316]

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.

[@CharlieMorrisZL2CTM]

Thanks Dave. I'm certainly happy with how it turned out. Just how I like it.

[@eduardogarciamontesdeoca5935]

That’s a cute rig Charlie. I think to use a similar array for my next build , a least for experiments, final build will be way smaller...

[@CharlieMorrisZL2CTM]

Sounds good Eduardo. One day I'll play with SMDs.

[@lucvanhove9639]

Fantastic tranceiver Charlie. It gives me spirit to create. 👍👍👍👍👍

[@CharlieMorrisZL2CTM]

Get into it Luc!

[@skylabby]

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

[@CharlieMorrisZL2CTM]

Will do. I'll just add a photo of the relays. It should be relatively clear what the wiring is.

[@mkolbat]

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

[@CharlieMorrisZL2CTM]

Hi Markus. No, I have not compared the various mixers I have used I the past, i.e., SBL-1, ADE-1, NE612 etc. Sorry about that.

[@brianharper9798]

Wow that's excellent, what's that 2000km? On

[@CharlieMorrisZL2CTM]

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.

[@genericdynamics6618]

@@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

[@curtstacy779]

Looks great charlie! I need some AGC in my life.

[@CharlieMorrisZL2CTM]

Gidday Curt. It certainly works well for a simple AGC. Again, not a competition rig, but that's how I like it.

[@kd9kck376]

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.

[@CharlieMorrisZL2CTM]

Excellent. Sounds like things are going well.

[@Allen-u1r]

Interesting stuff Charlie, very cool and good!

[@CharlieMorrisZL2CTM]

Cheers Allen. Much appreciated.

[@kitcartel9390]

that's a great result Charlie you had "Burt Munro" hitting speed records with very little power on land now your doing it on air !!!!

[@CharlieMorrisZL2CTM]

I was pleasantly surprised too. Just playing around now with speech compression. Hopefully, I can make that work.

[@turinskiboy]

Fantastic!

[@CharlieMorrisZL2CTM]

Cheers John.

[@mithun1307]

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]

Excellent Mikhail. I will try SMD too one day.

[@mithun1307]

@@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 👍

[@TheRubbersoul1991]

Sounds great. I could pick VK3IO's voice easily!

[@CharlieMorrisZL2CTM]

Thanks. It sounds better in person. Very happy.

[@moustaphamuhammad7013]

Hope to get in touch with you Charlie on Air one day.

[@CharlieMorrisZL2CTM]

I hope so too Moustapha. That would be great.

[@moustaphamuhammad7013]

@@CharlieMorrisZL2CTM ISA

[@madalinbetea9871]

Hello Charlie make avideo about MC1350p+MC1496 detector and modulator.

[@CharlieMorrisZL2CTM]

I'll add those to the list Madalin.

[@jerryfankhauser2959]

You earn one "ATTA BOY" !

[@CharlieMorrisZL2CTM]

Cheers Jerry. I couldn't pass the opportunity up. Very happy.

[@mikeberger1688]

What? An amateur who knows electronics and home brew? It used to be that way.

[@CharlieMorrisZL2CTM]

Hi Mike. Hopefully, the videos will help encourage others to give home brew a go. I enjoy it.