I'd say that buzzing interference is from a unshielded AC voltage device. I'd normally say "that sounds like a 60hz hum but it's no doubt a 50hz hum!! 😉 Roger W9RHS
Great audio! Sorry about your generator. Your test engineer is doing a fantastic job! Also, I've got a Royce 6 channel portable on the way from ebay. From the pic it was manufactured in '74. Should be here any day now.
Yes I should use a boat anchor Sig Gen I just have so much stuff in my room, I've a big house but I have the smallest room as my shack, I'm looking at getting a small chinese function generator which seem reliable and do FM and AM then using a step attenuator to reduce the signal, you can get digital step attenuators or use a decade resistance box, the lowest most cheap function gens go is 1mv which is a thousand times too high for receiver setup so you need to step attenuate, for walkie talkies I'm just looking at peaking receive for the lowest signal, for calibrating s meters you would need to do basic calcs to ensure accuracy.
@@knoxieman I have an old IFR communications monitor. It has a generator function. I have not used it in some time so I'm not sure it still works. It would be nice to get a cheap device using the method you describe. I'll have to look to see what's available from ebay or amazon.
@@understandthetimes5721 Yes I ordered one today and a digital attenuator, I will do a video on it all working and do a quick receive setup with it on a Rotel RVC 220 :-)
Ahh Paul I'll 2nd that comment the best CB portable radios you have tested so far although i dont think a 9V battery would last too long with open squelch etc. Marc In Bletchley Towers G6XEG
@ 3:58 that solder ball right by the IC nearest the top probably didn't help, I had one of those cheap Chinese sig gen and that also failed [very weak output] I replaced the IC with an AT-160 from Aliexpress and it works again, But yours is a different design with different IC's
Those Realistic handheld CB’s are hard to beat. I bought a pair or TRC1005’s after watching Richard from UK CB Radio servicing testing them. They are extremely good. I think your chief test engineer summed it up well. Shame about the sig gen though. Cheers Graham
Yes I bought the Sig Gen after seeing Richard use it, he was wise to sell it on, I have seen many people have exactly the same problem with it, it gets weaker and weaker and then dies, I was really careful with it as well, thats 70 quid down the drain, I suppose I can use the case for something maybe.
Still punching myself for throwing out my Tandy catalogues when I moved QTH quite some time ago. Seeing that the online catalogues are not online makes me even more annoyed at myself! I am a sucker for anything with the Realistic badge. Those are definitely the best sets you have found so far Paul, and another good demo with Tyler! 73 to you both!
Thanks so much, yes its a shame I dont think anybody has catalogued the Tandy books, I am sure that who ever owns Tandy (carphone warehouse) might be sitting on them but I doubt it. :-(
Hi - I’ve just bought a pair of these on eBay. I’m not the most technical people but I hope to mess about with them with my 6 year old son. Are you happy to give me a few pointers if I have any questions? Cheers, Nathan
SPECIFICATIONS RECEIVER Frequency :27.79125 MHz (Supplied with Sensitivity Adjacent Channel Rejection Audio Output channel 20 crystal) : 2 uV for 10 dB S + N/N 30 dB :250 milliwatts (10% THD) Current Drain 20 mA to 150 mA TRANSMITTER 127.79125 MHz (Supplied with channel 20 crystal) 50 milliwatts -70 dB or better Frequency Power Output Spurious Emission Type of Modulation Frequency Tolerance Antenna Impedance : F3 :0.005% :50 ohms Current Drain :50 mA
Ive got a set of the 3 channel ones. They really were great but very large. Now days a simple baofeng radio can be programmed to take its place + much much more.
Very high-quality electronics, but cheap housing. The Japanese were cheated, and this is still the case today, they are very cheap. A domestic product would probably cost the entire monthly earnings. You can see very good performance despite the plastic housing.
Performance of the radio is surprisingly great, and the inside seems so pristine
Extremely impressive.
I like that they've got both Realistic and Tandy on them.
Ahhh this takes me back. I used to work in the Tandy shop that was just off Wembley High Road when I was a teen. Nostalgia! I miss Tandy!
Where did you find these devices? So cool! 😎 I had this one when I was young!
eBay 😎👍
I'd say that buzzing interference is from a unshielded AC voltage device. I'd normally say "that sounds like a 60hz hum but it's no doubt a 50hz hum!! 😉 Roger W9RHS
Yup it's the lighting I use when I'm filming, it's very low range but it's sat right behind the camera.
Great audio! Sorry about your generator. Your test engineer is doing a fantastic job!
Also, I've got a Royce 6 channel portable on the way from ebay. From the pic it was manufactured in '74. Should be here any day now.
Yes I should use a boat anchor Sig Gen I just have so much stuff in my room, I've a big house but I have the smallest room as my shack, I'm looking at getting a small chinese function generator which seem reliable and do FM and AM then using a step attenuator to reduce the signal, you can get digital step attenuators or use a decade resistance box, the lowest most cheap function gens go is 1mv which is a thousand times too high for receiver setup so you need to step attenuate, for walkie talkies I'm just looking at peaking receive for the lowest signal, for calibrating s meters you would need to do basic calcs to ensure accuracy.
@@knoxieman I have an old IFR communications monitor. It has a generator function. I have not used it in some time so I'm not sure it still works.
It would be nice to get a cheap device using the method you describe. I'll have to look to see what's available from ebay or amazon.
@@understandthetimes5721 Yes I ordered one today and a digital attenuator, I will do a video on it all working and do a quick receive setup with it on a Rotel RVC 220 :-)
Ahh Paul I'll 2nd that comment the best CB portable radios you have tested so far although i dont think a 9V battery would last too long with open squelch etc.
Marc In Bletchley Towers G6XEG
Hi Marc yes back in day I had a Harvard and it eat 9V batteries, I can remember that horrible feeling pressing the battery health button 😩
@ 3:58 that solder ball right by the IC nearest the top probably didn't help, I had one of those cheap Chinese sig gen and that also failed [very weak output] I replaced the IC with an AT-160 from Aliexpress and it works again, But yours is a different design with different IC's
Yes bin time sadly
I loved Tandy and their products. Quality equipment imo, but then again, I did work for 'intertan UK Ltd' in 1988 😉
Yes same here, I had one of their robot arms, so much fun if a little noisy.
@@knoxieman Hehe, still got that. Armatron!
Those Realistic handheld CB’s are hard to beat. I bought a pair or TRC1005’s after watching Richard from UK CB Radio servicing testing them. They are extremely good. I think your chief test engineer summed it up well. Shame about the sig gen though. Cheers Graham
Yes I bought the Sig Gen after seeing Richard use it, he was wise to sell it on, I have seen many people have exactly the same problem with it, it gets weaker and weaker and then dies, I was really careful with it as well, thats 70 quid down the drain, I suppose I can use the case for something maybe.
Date code on the MC3357 FM IF chip was 25 week of 1988 so it was made some time after that
Can’t beat old school radios. I would say 1981 on those.
I love tandy radios.
Still punching myself for throwing out my Tandy catalogues when I moved QTH quite some time ago.
Seeing that the online catalogues are not online makes me even more annoyed at myself!
I am a sucker for anything with the Realistic badge.
Those are definitely the best sets you have found so far Paul, and another good demo with Tyler!
73 to you both!
Thanks so much, yes its a shame I dont think anybody has catalogued the Tandy books, I am sure that who ever owns Tandy (carphone warehouse) might be sitting on them but I doubt it. :-(
Beautiful little radios - it's a shame they don't have a squelch circuit.
This is good Fm narrow band project👌
That's great tylor! Next time let your father be the test engineer! 😂
Tidy sound on them 👍
Interesting to see if in 20yrs your buying old cheap sig gens to fix and reminisce with 😉😂
Great video 👍👏👏
Ha ha yes indeed
Hi - I’ve just bought a pair of these on eBay. I’m not the most technical people but I hope to mess about with them with my 6 year old son. Are you happy to give me a few pointers if I have any questions? Cheers, Nathan
Yes no problems
Have you ever talked to Fred in the Shed on your CB?
No although when I was down in Cornwall we would have almost certainly have been able to when the lift was on :-)
SPECIFICATIONS RECEIVER Frequency :27.79125 MHz (Supplied with Sensitivity Adjacent Channel Rejection Audio Output channel 20 crystal) : 2 uV for 10 dB S + N/N 30 dB :250 milliwatts (10% THD) Current Drain 20 mA to 150 mA TRANSMITTER 127.79125 MHz (Supplied with channel 20 crystal) 50 milliwatts -70 dB or better Frequency Power Output Spurious Emission Type of Modulation Frequency Tolerance Antenna Impedance : F3 :0.005% :50 ohms Current Drain :50 mA
I have these and this is what is in my spec sheet. Hope this helps.
What range do they have?
2 miles in open space
@@knoxieman ty mate.
how i can buy them ?
They show up from time to time on eBay 👍 although they do seem fairly rare.
Ive got a set of the 3 channel ones. They really were great but very large. Now days a simple baofeng radio can be programmed to take its place + much much more.
Yes for sure, these are a superb example of how good these sets were and sounded back in the day
Not quite as nice sounding as the Icom IC2E ...the finest sounding handie ever!
It's really close ha ha
Very high-quality electronics, but cheap housing. The Japanese were cheated, and this is still the case today, they are very cheap. A domestic product would probably cost the entire monthly earnings. You can see very good performance despite the plastic housing.