G4NSJ - National HRO 5TA1 5A1 R106 mk1 mk2 comms receiver - part eight

[@Bilbo56]

Right please never feel that you have to apologise and think you’re boring people your videos are informative and interesting

[@g4nsj]

Thanks!

[@ChuckKirchner-se6ib]

Nice that it's done. Looking forward too the two transmitters. Cheers, Ray.

[@g4nsj]

Thanks! More videos coming soon. Cheers, Ray.

[@K4VTE1818]

Enjoyed the series. Look forward to the next one.

[@g4nsj]

@@K4VTE1818 thanks!

[@Zerosho]

Ray, thank you for explaining your work in such detail. Can't wait to see the kw Vespa videos and the transmitter for the National HRO. If my National NC-2-40D didn't weigh 27.2 Kg (60 pounds) I'd ship it to you to tune up and study. The image of the NC-2-40D on RigPix is my radio. I sent it to them in 2002 due to them not having a picture of it at that time. Amazing fact: the NC-2-40D radio in 1947 cost £2,691.77 ($3417.66 US). Amazing. Cheers, mate.

[@g4nsj]

Great to hear from you. I'll take a look at your NC-2-40D on RigPix. Cheers, Ray.

[@siti7797]

Really enjoyed this series. Thanks.

[@g4nsj]

Thanks!

[@JustinPartridge-v3f]

Fantastic video hope you had a great Thanksgiving have a merry Christmas in this awesome to see your videos I enjoy them

[@g4nsj]

Thanks! It's good to hear from you. Merry Christmas!

[@JustinPartridge-v3f]

Have a Merry Christmas and a Happy New Year to you too

[@mmwaashumslowww7167]

I remember back in the 70s and 80s a few radio enthusiast mates, always built their projects in a wooden case if possible. Home made audio amplifier on the shelf in a wooden case, looked good in the lounge. Metal boxes were very plentiful back in the day, and there were loads of them in GWM radio shop as you know. I loved spending a Saturday afternoon in that place, even if I hadn't bought anything.

[@g4nsj]

GWM radio... happy days! I really miss that shop. Cheers, Ray.

[@Mike-H_UK]

Cheers Ray!

[@g4nsj]

Thanks, MIke.

[@48661]

Well done and thanks for the video series and Cheers, 73 KC8ARO in Michigan USA!!!

[@g4nsj]

Thanks!

[@michaelmiller641]

I had a kw vespa with it's cardboard power supply! I seem to remember once building a valve amplifier on a cardboard chassis!

[@g4nsj]

A valve amplifier on a cardboard chassis... nothing wrong with that! Cheers, Ray.

[@davidedwards5461]

Ray another great video on the HRO. Take care GM4GLG

[@g4nsj]

Thanks!

[@stelthtrekker9445]

That's a proper valve receiver.👍

[@g4nsj]

Indeed!

[@Paddy_Roche]

Thank you for the whole series, Ray, I have found it fascinating. I wish you wouldn't say "I'm probably boring you now" so much. Nothing could be further from the truth, your videos are always educational and interesting. I look forward to the next, it looks like you have a lot of material to work on too. Have a great Christmas if I don't see you before, de 2E0TWD

[@g4nsj]

Hi Paddy, good to hear from you. I suppose if, I am boring people, they would just switch off. Haha, happy days! have a great Christmas. Cheers, Ray.

[@JustinPartridge-v3f]

Me and a whole bunch of friends we're actually on channel 18 on the CB radio and we have our own little group now couple Young chaps have actually gotten into radio and I have two and my friend was talking with me the other day and we were talking from here all the way to Canada he thought it was amazing and then after Canada I got the Jamaica skip was coming very well and I was bouncing off the atmosphere they were saying my radio sounds really great over the airwaves I appreciate you on your channel and you're not boring me I think you're interesting I enjoy watching your videos and you have dropped my jar on like you wow I got new video 😍 I got a new cereal and telling us up in the sky is coming fantastic and great has great receive on I love it isn't 20/28 seven it's a great antenna it's huge the thing is about 50 to tippy top about 650 ft tall as I passed the house it comes in very well and has eight ground plane radios on the bottom it looks like a big sword up in the air it works fantastic they make real RF Italy makes really good antennas

[@g4nsj]

Great to hear from you. Sounds like you're doing well on CB, excellent! The antenna sounds amazing! Crikey! Love it! Cheers, Ray.

[@eddyaudio]

Top work Ray how does HRO compare to FRG 7:Ian VK2IJ.

[@g4nsj]

@@eddyaudio Hi Ian, the HRO is as good if not better! Cheers, Ray.

[@peterdalton4370]

Has anyone mentioned the Australian connection with these HRO receivers? Around the beginning of WW2 our RAAF was looking for a communications receiver and to this end Kingsley Radio of Melbourne (Australia) submitted a design, the CR11. If you see a photo of this radio, it is unmistakable as a knock-off of the HRO. The design was accepted and went into production to be known in RAAF service as the AR7. It didn’t take HRO long to hear about this knock-off and they began legal proceedings against Kingsley for copyright infringement. Long story short WW2 meant that the USA needed communications receivers and a license was arranged for Kingsley and they were told to get on with it. By wars end some 3200 receivers had been produced most going to Australian military use; army, navy and air force with a small number going to US forces in the Pacific. After the war many AR7 receivers went into commercial service, then later they hit the surplus market and became a favorite of ham radio operators.

[@g4nsj]

That's interesting information, thanks!

[@AnyoneSeenMikeHunt]

😀