Hello G4NSJ. Thank you so much for the clear explanation. I would like to build a multiband maconi type of dipole you share. My question is this: instead of using a 59 ohm Coax feed line can I just use speaker wire? Second question : would l be able to hear better if I used a longer dipole ie, say 50 feet for each element (100 feet for both legs of the dipole)?

Trying my hand at a sdr MW station one day..I've found inverted V's in the woods is best. Up about 100ft the apex.

Yes admit videos are basically awaking the radio communication aspect I was always fascinated when I was younger with shortwave a.m. broadcast eventually I got into a little bit of the Citizen band ultimately I'm also part of a group CB radio 11 meter meter Citizen band Vancouver BC Canada International Yes I do admit turn the radio programs are becoming a bit boring today you bringing a bit of spice into the radio aspect of radio communication I believe that there should be more Alternatives out there out there when it comes to radio please continue and I also did post on that group your ghost story radio aspect radio communication can be an incredible opening to so much different aspects understanding the principles of radio communication it goes into TV it goes into FM it goes into a.m. it goes into VHF UHF it goes into cell phones so much of our equipment is basically operating on radio communication and people are not aware What if the internet and cable gets cut off what do you have left back in the 1940s used to build really good receivers for a.m. and shortwave the audio spectrum that came out on these radios was incredible Star Wars the entertainment you can listen to a story on the radio the same way when I travel to Cuba I picked up some of the Cuban stations local stations recorded some of their stations and they were actually playing stories on the radio you can actually visualize almost everything that was said even though it was a foreign language if you have a little bit of Spanish it would bring you into the aspect of what they were trying to emulate radio is a fascinating scenario it leaves so much possibilities and yes I would like to see more pirate stations ethical Pirates basically transmitting on an empty station a different programming different opinions different music even reading a book online basically on the air and if you have all the aspects of the audio the sounds that comes with the reading of the book brings you into a totally different aspect you're having to use your imagination to visualize everything that is spoken they're saying that radio is a dying art I say not I say it's about to come back look at all the natural disasters that are happening when does people would be happy to have an AM receiver just to get their information to know what's going on most people are stuck with their phone their phone or they can't even get more than an FM receiver please continue to go to work 73 in all the best .

Steve Hunt's article was excellent. SK Dec 2018. RIP sir.

Hi Ray, I hope you are well. I caught COVID in 2022 and am now on oxygen but coping ok. Since feeling a bit better I've got my radios out again and although still using the flower pot antenna I thought I would invest in a GA-800 active loop. It works very well on shortwave but though it states up 159Mhz I can't a dickie bird (good umpire he was) on air band. I've tried my other radios (3 in all) and still nothing and they all work on the flower pot. I have searched and searched the net but can't find a thing about them. I have a feeling though they state they go to 159Mhz its all FM after 88Mhz and doesn't switch to AM for the air band. I was hoping you might be able to shed some light on this please.

Nice RX but not very sensitive like all aircraft RX of that era. At that time HF was overcrowded so sensitive RX could produce dozens signals on single freqeuncy! All armies were in the air on CW, Air Force, Navy, PTTs, and many other organisations, all was on CW.

I recently got my hands on a Tandberg 3600XD and replaced the brake pads much like you did along with replacing all rubber parts akin to your solutions. The only issue remaining is a fuse that keeps burning out due to shorting somewhere, so I’ll have to look into where the electronics are shorting out. Really great video, really helped me to get going with fixing the mechanical bits on the deck

I have a 12m mast with a 1/4 wave centre loaded virtical for 80m to get on 160m i add a loading coil at the Base i have worked dx on 160m only 100w here my garden is only 10 x 20 ft and i dont need a atu chris G0WFH

Thank you sir for your videos. They are very informative from across the pond. Thanks again.

Thanks for sharing love it . I am student ❤

can the centre pole be metal?

Ray your explanation is a joy to listen to. I loved your quote "everything inside the coax is its own private world" To many people on KZbin think they know but in all reality they know foxtrot Alfa 😂and give newcomers bad advice 73

The FRG 7 is a "hands on receiver" I have one also and my battery box is gone also. But it is a fine Radio. Good luck from Tennessee.

Well explained Ray. Cracking web site also - I like the engine 👍 73 de GI8WFA

Here are some LW stations that I heard just recently via a UK online SDR: 153 Antena Satelor Brasov ROM 171 Medi 1 Nador MRC 198 BBC R4 Droitwich G (BBC WS) 225 Polskie R. Solec-Kujawski POL 252 R.Algerienne 3 Tipaza ALG

I’m in New Zealand work and I scrap yard and someone dumped a couple of Old NZ postal service radios So I cracked them open to see what frequency chips they had and they were 25 MHz. I tried to get one to fire up. It did go but she was in pretty bad shape but who knows? I might be able to resurrect it. in the past I was a bit of an avid CB fan New Zealand back in the day ran 26 MHz. My father was an Old School ham radio operator passed away back in the mid 90s. He taught me quite a bit but I really miss those days operating 10 -12 and 11 meter bands with him on the side.

You forgot bio interference, or doesn't that have any effect

Can interference be useful?😊

Ray, during your searches for info on these HRO sets, did you come across this KZbin Sute..."AWA Communication Technology" for there is a video on this site titled "The History and Identification of National HRO Receivers". This site gives details as to where you may find your receivers serial number. This serial number can then be used to identify the set model and year built. This video is now a year old so will be somewhere down the play list.

Hello Ray really good video I am loving the content anything coming up at Halloween on your 2nd channel

I understand none of this.

Right try contacting Mr Carlson’s labs. I’m sure he’s done a HRO radio on KZbin.

Ray, I have a National NC-2D that has the same three position switch you removed. Position 1 allows the receiver to heat up so there is no drift i.e. reception is cut off. Position 2 is "manual" with no AGC. Position 3 is AGC. A friend of mine sent the radio to me as we both worked in SIGINT in the 80's. He found it at a radio convention, abused and left for dead. I refurbished it. It's a boat anchor! I named her "Natalie" for National Radio. She was made in 1947. Also, really enjoy your videos. You remind me of the gentlemen who introduced me to radio when I was 16. Keep making videos, Old Man. Cheers -- Buzz

Well done on finding these elusive articles Ray. You are like a Super-sleuth tracking down this information to allow you to make progress. Fascinating series. Thank you.

Is the Navy coil pack the one you had to drill a hole in to get the receiver to accept it? Perhaps that's why there was no hole, as the IF was different. This receiver is a fun journey, as long as it doesn't make you mad. I'll be here for any amount of episodes. Cheers, Ray.

First off I think you saved me a RF burn. Second question can you be too high off the ground horizontally to break the circuit? I don’t want to use a tuner, is there a position that would raise the SWR in relation to the circuit? Lastly that you.. brilliant lesson. VE3WLX

Fantastic, Ray. Surprised that SSB resolution works so well, as I thought these old radios were for just CW and AM. Keep up the good work with getting the radio in top working condition.

Ray, I believe people "gronch" the adjustable components because they're desperate to learn how the unit works. It's also a result of far too few mentors available to satisfy the next generation. I too did a few gronches as a lad and worked my way up to 50Kw with great success as a broadcast engineer. Your channel is very important as it teaches and mentors that new breed that wants to walk in your footsteps. Be patient with them. Show them the correct way and the proper tools to use. That's what I try to do now with my peeps. PS. I wish I had an answer to the crystal question. Only thing I can come up with it that it's lightly loaded by capacitance coupling and without the spacers we have an impedance mismatch (heavy loading) on the crystal and thus a low Q. That's my best guess. 73 OM Looking forward to the next video.

I have a class d wave meter it has a 1 meg and 100khz crystal reference and it does also rattle around in side its holder

Hi Ray, the GOLDEN SCREWDRIVER!! Glad you got it sorted out, been great progress, thanks for sharing.73

Hi Ray. Have you seen the guy from the states videos he is working on this type of radio as well. 73 Paul G0MIH, HS0ZLQ

Hi Ray, Great video, many thanks. Perhaps during a future video or in one of the weekly videos you could explain why the US navy needed to change the IF to 175kHz in order to receive 400-500kHz. I gather there is some problem with receiving broadcasts at the same frequency as the IF.

I had to laugh when you said "Graunch". That was a favourite saying of my dad when he heard someone doing a bad gear change. Turns out that it was a popular saying amongst motorcyclists too in the mid 70s as I remember.

13:00 I recognise that voice, it's 2E0KKA, Chris from Exeter.

How about 144 mhz

Great video! Looking forward to the next part :)

Lovely bit of kit ray.....not seen one of your vids for a while.....I worked NZ for the first time this morning with the help of my doublet antenna..... One of your vids introduced me to the fantastic Doublet quite some years ago. Thanks so much for your videos Ray.

Miniwhip is a PROBE for electric field, not an active antenna

National did sell a noise limiter as a add on and some HRO where sold as factory standard fitting. hence maybe the hole on the left side of the face plate and this where it would be fitted.

The year is 2030.......G4NSJ - National HRO 5TA1 5A1 R106 mk1 mk2 comms receiver - part 137. lol Really enjoying the project Ray. 73, Rick VK5RI

TNX Ray another good video those were the days vales . Brought up on vales good set the HRO 73 de G6JMX

Ray, I commented last video about a move here in the US to eliminate AM radios in new cars. I did just a little internet research about this. The car manufacturers evidently are having trouble with interference from the electric motors on EVs. There is so much interference from all of the cheap switching power supplies in our home devices it is hard to get a clean signal. My new washing machine produces bad interference on my AM radio in my shop. When my wife heats water in her Keurig coffee maker, it completely wipes out my AM radio while boiling the water. I am sure big money of the car industry will win out. Take care, I enjoy your channel, I no longer do any electronic repair retired now for 11 years, but I understand everything you are talking about. I spent 42 years working in industrial controls, land based microwave and commercial two-way radio systems.

Don’t ever worry about thinking that you’re explaining too much you do a brilliant job and even non-registered blind. I know exactly what you’re talking about. I love my vintage radios but I also love my transistor radios so don’t worry about what other people think what you think is right for the video is right for you, honest I wish I had your skills

The Germans in WW2 copy the HRO They purchased the dial and tuning caps under the noses of National radio through Portugal. However they used German metal tubes

A few years ago I found a web page for the HRO giving a list of frequency's and dial setting versa frequency and printed it of on to A4 paper. covering most of the coil sets If you have seen a BC221 booklet its the very same idea. The site I think has been deleted.

"Peyton Place". 🤣😂🤣 Oh, my Days, Ray. Well, another informative video, thank you, you make them Ray and we'll watch them. Take care and see you for the next one.

Strange how the receiver cuts out at a particular frequency when using that coil pack. Any clue in the fact that you get that static click when the receiver cuts out, Ray "?".

i used a lm14 like bc221 too help adjust my hro mx

So far a great journey on this project and great simple explanations foe ANY viewer, cheers! 73 from USA🇺🇸

Ray, thank you for the videos. It's been educational for me❤