ARC-5 COMMAND TRANSMITTER INTRODUCTION
HTML-код
- Опубликовано: 3 окт 2024
- This Video Series takes us through the famous WW2 Bomber, ARC-5 SCR-274-N Command Transmitter, from acquiring an example, through clean up, adjustment, restoration, power supply construction and its use on the ham bands.
This is great. I did the 40 meter conversion around 1970 and worked all corners of the US, plus Canada and Japan. It’s still in the attic with my homebrew power supply & oscillator and all the QSL cards. Good memories.
I enjoyed your video of the ARC-5 Command Transmitters from 2012. I have 3 of the ARC-5 Receivers that were lovingly restored, but not by me. They are extremely stable.
73 Paul AA1SU
As a new Novice op at age 13 in 1958 I was gifted a BC-459A for the required crystal control operation in the 40m Novice "band". A homebrew 5U4G power supply providing approximately 40w DC input and feeding a 65 ft end-fed flat top up 35 feet, I worked from Buffalo, NY about 25 to 30 states and several Canadian provinces coast-to-coast across the continent within the 9 or 10 months as WV2CEL. A few more within the first six months as a General Class op WA2CEL before acquiring the Heath DX-60. That BC-459A was passed on to another new op shortly thereafter. Today, I have a new in the box ARC-5 T22 made by Western Electric purchased about twenty years ago, thinking to "turn back the clock" by putting it on the air with carefully made reversible circuit mods. Thanks for publishing your fine videos about Command Set equipment and other amateur radio related articles, as well. ~Bruce WC5CW
Thank your! I enjoy your videos. I had an ARC-5 receiver as a Novice. It was it had a large bandpass. I felt like I received then entire forty-meter band! The band was crowded in those days.
My first ARC-5 was also purchased from Fair Radio Sales. It was 1973, the radio cost $5 and was still sealed in the original packaging. I converted it to 160 meters using instructions found in the 1963 Radio Amateur's Handbook. I had just gotten my General ticket and this was my first VFO controlled transmitter. Very exciting stuff sat the time. Looking back on it I don't know how I ever got it to work. Still have that ARC-5 on 160 meters.
Great video. Thanks for posting.
I also got a new one for 15 dollars, but in 1983 - it had a rattle that was one of those darned plastic beads! That is why nobody bought it.
My brother is a ham going to start reworking one of the SCR-274-N's . I used one as a novice back in 1966-67. So the ARC 5's were plentiful then and at the east bay radio club were almost given away to novices like myself at the time. A lot of fun memories.
Great intro, anxious to view the next part in the series. Going thru my inventory and cleaning up some of my ARC-5 and 274N hardware today, so very timely. Wish I could get another (new) set for $5.00 :)
My first and only transmitter was a T-21 I bought for $7.50 in 1956 -- apparently not such a great price at the time! I was KN7ERD in Tucson. Many years later -- mid 90's -- I bought another T 21 on EBay, think it was a little over $100. I have a few ARC receivers as well. My question is this: I remember being told in the '50s that these sets contained a thermite charge, for destruction of the radios in case of ditching or bailing. Is that true in your experience? I would prudently remove the charges if I could positively identify them. Two of my sets are almost mint, so might still be problematic. Any thoughts? Thanks!
Do you offer repairs on these?
I just picked up an ARC-5 Transmitter and the tuning dial is stuck. The lock knob is unlocked. Any idea what could cause this dial to stick? The interior looks clean
It might just be corrosion so spray some penetrating oil or WD-40 on all parts of the shaft in contact with bearings and gears and maybe the shaft lock too; maybe hit it with a heat gun or let it set overnight. Then try to free it.
@@MIKROWAVE1 It appears to have been a mechanical hit that bent the tuning shaft.
Just wanted to know if you have had any experience replacing the variable caps on the worm gear drive?
I have my 40 meter one all returned to stock, nice power supply..
Only to notice that the stator on the plate tuning cap is missing two of its glass bead supports.
I have one of my old junkers from the 60' s thst is only a parts tadioad I used it for a muktiband.VFO.
I ordered some sine wrenches and assume I will have to remove the front panel knob, and loosen the coupling to the speedometer cable gping to the VFO.
What I can't determine is if I will have to remove the dial, knob and gears and bushings from the front panel?
Loss of the beads is common - you can replace them if you can find some plastic beads at the craft store.
Trying to build the total solid state power supply and having difficulty locating the 55 Volt Zeners. Can you make any specific recommendations? Thanks
Substitute 62V and 47 V zeners from Ebay. Just series until you get close on the voltage.
Tnx & '73. Very informative, de N9SMJ.
Thanks for watching. I did one of these up for my best friend who ran one in the 1970's as a novice, and had turned into the biggest Yaesu Slut ever :) It was cool to work him again on the ARC-5 on chirpy CW like we were kids again.
1959 for $4.99 new in sealed box.
Amazing! I picked up one new in the box as late as 1983 because there was a RATTLE. Nobody buys something with a rattle inside a sealed box.
@@MIKROWAVE1 It was probably the desiccant package rattling around inside the box (used to keep things dry). We were able to buy these ARC-5 transmitters brand new in the original box for $6.99 circa 1956 at an electronics surplus store in Cincinnati OH. Can't remember the name of that store.
He uses words I'm not familiar with, like toobs and tooning.
I guess he never completed school!
Barry Jones must know about Valves.