Take out the bits relating to creating ariels from the mains wiring. Some fool will do what I did as a kid and and stick two fingers in the light socket to see what it feels like. Later as my interest in electronics continued I would start to replace faulty selium diodes in our Murphy TV, the one with the controls under the famous flip top lid. I discovered how by playing with the rf tuning coils you could pull in other TV stations. One day I had the tv in a room with a Stone floor. It was propped up on a chair with the outer wooden casing off and I was poking around trying to get the vertical control to lock. Suddenly I saw the set starting to topple from chair and went to grab it and I was in bare feet. Luckily as soon my fingers brushed against the steel chassis I felt the same feeling as when I stuck my fingers in the light socket many years earlier. If I had fully grabbed it I would not be hear now. This is the danger of tinkering and not being aware that transformerless equipment can be deadly if the A/C live side is connected to chassis by reversed connection at the plug end. Some muscians have been killed using Audio equipment that did not use transformers. It is very important for earths to always be connected on cookers,kettles and all electrical appliances so that if the live of the mains touches the steel casing it will blow the fuse or trip of your supply.
Hah, according to RU-vid, 97.5% of the viewers are over 55 years old (86% are over 65). We should all know not to stick a screwdriver in an electrical outlet, and you see me get electrocuted by the radio after I do. The fact that you were poking around in a television with bare feet on a stone floor is funnier than the screwdriver bit. I'm glad that you lived and got to see my video years later!
HaHa, Opening the box the first thing you got was a shirt. Almost looked you received the wrong parcel. I am 78 years old. As a boy I often built receivers like this and they worked. Again I am returning to my old hobby, luckily there are still old radio parts lying around here. Thanks for your educational video. Greetings from Amsterdam (Nederland)
That's weird. You couldn't have put the wrong pot in because they are both the same. (Bandspread and regen). How do the solder connections look? Can you put an ohmmeter across the pot and test it?
No its the right one I thought maybe CR1 but it checked ok. I checked each component before I installed it. After watching you video I wasn’t sure how it should operate. Now I know I have a problem.
@@jimbulebush3593 Make sure D1 is facing the right way (stripe towards speaker) and that R11 is 1 meg (brown-black-green). If all looks well it's possible C5 or C9 are bad or swapped. On mine, C5 is tan and C9 is blue. I can take some voltage measurements and compare them with your radio, or If nothing works you could contact the 4States website.
Does trump sell one I can listen to while reading classified documents in the bathroom at Mart of Lardo? Will he be able to use one in prison while setting on the stainless-steel toilet. Vote blue so we don't end up tuning into Radio Russia.
I have this little beauty and I am trying to get it working. I have a question though. In the D band there is no capacitance in the feedback circuit in the schematics, How does it work without this cap. . Do you owners placed a cap between the L1 and switch SW2? if so wich value? thanks in advance for any answer.
I have two different schematics and neither one shows a capacitor. You would think if it needed one it would be labeled C12, but in one schematic C12 is a filter cap and in the other schematic C12 is between the collector of Q1 and the diode. I guess it doesn't need one between L1 and SW2. L1 is the broadcast band, and the radio works fine on that band.
@@michaelsimpson5417 Thanks for the fast response. I have a schematic where there is a cap between L1 en SW2, it is labelled as Cx. For me it is very strange that the Broadcast band does not need the feedback coil. Also the Vc a and b are in the schematic of the same value! In my radio the value differs, Vc b is a lot smaller and C16 was not mounted. I have the one with the big air tuning caps. A lot of mysteries in this device. I'm going to experiment without the C16 and without the coupling cap. See of somethings works. Greetings from the Netherlands.
@@snakebite8925 On the version I have with the big tuning cap, there is nothing on one of the pins of L1 (Band D). It's very interesting that your schematic has capacitor Cx. The manual says that VC1a and VC1b are both 240pf. VC1a is connected to the rotary switch and VC1b is across coil L1. On the newer version, C16 is in series with VC1b, but I don't see C16 in the older version.
Nice radio. Curious how it compares to the Number 2 Crystal Radio Set? Does it do SW, or just BC band. The current owner of MRL seems a bit over the top if he was going to have the old video pulled just for the sake of the "R in circle" symbol. Heck, I cannot even insert the symbol here in the comments. That is bloody crazy. Could he not have respectfully asked you to add it first?
LOL, I've been going back and forth with Paul Nelson for years. Every time I post something about MRL I get an email saying I'm breaking the law, and I don't even know what he's talking about. In this case, he told me it wasn't even an MRL #1, because I built it, not him. So it's some sort of copy or recreation, but my take on it is that if I build it according to the plans, it's an MRL #1. It says "MRL #1" at the top of the plans, so what else would it be? As for how it works, I think the No.2 works better. You can see the layout is the same, but the circuits are completely different. One of the controls on the No.1 is a wave trap to eliminate interfering stations, which works great. I was able to pick up some SW at night on the No.1.
@@va3ngc The only source I know of is to keep watching ebay. I think the "D" in "DCC" means Double Cotton Covered, but mine only has one layer of cloth.
I replaced capacitors in 1AESS circuit packs. You knew they were bad because they got red hot. I understand that AC capacitors (flux?) expand / inflate.
It would be interesting to know what voltage they were rated at, and what voltage was going through them. Electrolytics usually open when they fail, like the start capacitor. Non-electrolytics turn into resistors!
Funny thing is, the I T Landes website says you need five years experience to work there. I know nothing about air conditioning, but I learned how to fix this problem in five MINUTES.
Fantastic radio. And nice demonstration of the 1 valve radio. Those components have shrunk somewhat nowadays, give me a valve any day. No offence to the marvellous tech of today.
Its a piece of junk. My Uncle built one and put up a dipole antenna and the tuner was poor and if you put a signal generator beside it you could kind of listen to SSB. He sent it back and got a refund.
@@michaelsimpson5417 Yes, you can do that but you may annoy other nearby listeners. To make that work you would turn the regen control up until the stage actually oscillated. It would then mix its own oscillators with the SSB signal to make audio. Unfortunately, it also transmitted a little of that oscillators too.
@@kensmith5694 My fault, now I see what the reply was to. You're right, this type of regen also transmits. I've used a regen to align a tube radio by tuning it to 455 kHz. To do that, you need a modern radio with a digital display so you know the regen is on the right frequency. It's crude, but I don't have a signal generator.
Reminds me of the adverts in Boys Own Paper for one valve SW radios. Never built one but did own a Dulci crystal set from Gamages of Holborn. In the late 50's there was a lot of Army surplus stuff in Exchange and Mart and shops selling bits stripped out of electrical junk. Market stalls had whacky gadgets guaranteed to bring the world to your living room. None of it worked, nor did the white spot transistors from Henries Radio. As they say, the pleasure is in the making, not in the results.
Funniest radio video I’ve ever seen. I couldn’t tell if it was all a joke or for real. It’s for real and I learned something about crystal radios. Phenomenal job cinching your nuts!!
One perk of living in the Northeast is that our grass doesn't need mowing for at least another month. The grass where you are looks pretty green. People are also in short sleeves, what dark sorcery is that!
Excellent success with the repair and great guidance on accomplishing it for others who may benefit being able to reduce cost of paying for the repair or having to buy a new mower!👏
keep up the great work, i hit all the buttons, still laughing over the box, was impressive at the start, good to see the takes people don't normally see, BIG Thumbs up
