I really like the design on this, and would love to see it scaled up a bit.

What if they are wired in series? Wouldn't they get the same current irrespective of voltage?

Great video! I attempted to change the amplifier board in my 817 about 5 years ago and somehow the smoke got out. I wish I had your video then.

Around the time you published the video i was playing with RTL SDR and listening to volmets discovering the joins of radio. I heard Shannon in irland and MKL in great britain all the way in Sahara of Algeria.

is it possible to have pixie-to-pixie QSO?

i have the same problem with my 817 can you tell me where to get a rotary encoder ? many thanks alan.

Very nice job! I own a R2000 and the LH Connector at the rear is for using the VHF module .

Very thorough job well done. 😀

Absolutely brilliant!!!!!!! Your attention to detail and skills in electronics are so admirable. Thank you for your hard work and dedication in putting this video together. 73

That was very cool, thank you.

Always good and clear video my friend.. You're the "superhero" that we need😊

I shorted mine out

Thanks mate, i appreciate the video! Learned alot and have subscribed to your Channel. 73s! de N7VAN

Great videos and thanks for your help.

what a wonderful video---very informative and entertaining at the same time. Your genuine enthusiasm and passion for the project was rather evident. cheers, VY1CO

I've always renewed my licence, but I haven't been on the air for many years.

Good to see an older Kenwood being resurrected 😀 the transceivers of this age have hinged front panels. You remove two of the three screws on the side and loosen the one nearest the front bottom on both sides and the panel hinges on the loosened screw.

Another great video! Many thanks for these videos, I am learning a lot and now have to go online and do some shopping for some of these modules. Take care and stay safe, Joe

Great video and so very well explained. Many thanks for the very informative and interesting video. Please keep up the great work. Take care and stay safe, Joe

Looks like it’s going to be a great series and will watch with intrigue, I have my mums old R2000 which has developed a fault on the receiving side, a funny noise and a strange smell do one day hope to fix it. Look forward to the next video cheers Rich G6VGC

Finally.... God bless you my friend.. I've the same receiver, with same issues...I got half a rip-off by buying it online, only to discover that it had a lot of problems..I look forward to your videos..73

There does exist smaller 7 segment displays. Another approach could be to find some old calculators and see how it will fit.

Brilliant work!!!!!!

My favorite receiver ever!!!!!

if you look at MAX313CPE MAX313 Quad SPST Analog Switch from the on line company Futurlec (Oz company) you will find you can get RF rated analogue sp DT switches which means you can switch Bank 0 or 1 through to the same circuit point with near zero extra resistance in line. That gives you effectively 16 Rx frequencies with a very simple change or addition. Word to the wise - Don't use the 4066 a switch with a barge pole ... it has about 40 ohm of internal resistance. that's why it is so cheap - and nasty. Mr Futurlec also lists one Intersil part for about USD 3.9 but with no datasheet - that's half price of the above part so might be worth a Butcher's HOOK. I don't know if you can get the parts cheaper in the UK from a bricks and mortar place. ??

At typical application is to refit existing hand held Tcvrs with a set of 8 Tx and 8 Rx virtual crystals.. there are a few traps to it. Basically the existing oscillators have to be converted to low gain amps within the target device. Obviously you can't stuff 500 microwatts of signal where it was expecting 200 uW . Bear in mind that typically the prog rock will produce 8mW out. So you will need attenuation. The output CANNOT be run into any sort of RF transformer without a 100nF capacitor in line. Finally some mixers will require the input to be a pretty pure sine wave or you will have all sorts of nasty artifacts at the output of the mixer and no circuits to remove them. Diod ring mixers generally will work with a square wave input. Gilbert cell mixers don't like a non sinusoidal force . If the Tx is an FM type that directly modulates the XTal via a varactor diode then clearly the Progrock can't work in that application.

Thanks for sharing your experience this will be really helpful setting up my 818 😀

Useful video, thank you! I have no experience with this sort of thing but would like to add 2 PIR’s to one LED string of lights, one at the top of the stairs, one at the bottom. Do I just put two sets of wires in the same holes on the bread board?

this is so nifty, watching those things working. thank you for the video! very interesting to see what basically is the first step to our modern consumer-grade FDM Printers, working live in action

Love your videos...

So happy I found you. Excellent videos

Thank you now I can build and set up my pixie

Thank You for your excellent videos

Hi there, i do pyrograpy and was wondering if you sell these.

Thanks for telling me about your (and Hans') power measuring method. I will try to do the same. Like you, I think QRP is a very interesting aspect of our hobby. Best wishes from New Zealand. ZL3ABX.

umm.. idk why but it feels like you will make a time machine someday..

Amazing. Move one wire and it detunes :D

Homebrew is ham radio. I remember looking forward to QST every month to see what Doug Demaw and others wrote about building qrp rigs. There is so much available now but I still love building circuits. Look at N6QW’s pages. He does home-brew sdr to old tube radios and hybrid tube/dds stuff. Schematics of what you built?

👍Good stuff. Quite an impressive rig. QRP is good.

What frequency is that on?

Just what I needed, especially adding the cap to allow the lights to gradually turn off!

That's cool...

Very informative video. Thanks so much for posting, this is just what I needed!

mine arrives in 2 days! thanks for this video!!

Lots of useful information here, thanks for the video Mort. I have two pixies waiting to be built. I will keep one standard and then use the other for mods and experiments.

This looks very interesting, I'll check your page to see if there is a long form video. Good work Mort!

1W! QRPp QRO 😂. Curious to know what circuit the new TX uses.

This definitely deserves its own long-form video showing the design and build.

I have a 817 that someone has been into before. It doesn't have the plastic film over the board. I don't see the grounding strip you mention, I just the the two jumpers and the two coax cables. Is it a wire or a foil strip to the board under the small transformer?