Use a 100-Watt tungsten bulb.
If you can turn over the right rock and fine one.
73
If you can turn over the right rock and fine one.
73
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Bc 312 m army signal Corp radio
- Thread starter Tweetybird
- Start date
Love military radios, what always gets me is how the heck did they keep this stuff operational in field conditions???
In that era component-level repair was done at lower echelons. The training courses taught basic fundamentals. Repair techs in the field were expected to know what made the systems tick, not just how to follow a troubleshooting checklist.
Consider also the systems were a lot less complex overall. Passive components were mounted on terminal boards, exposed to easy access.
Sorta.
Equipment was just less reliable. This reality made repairability more important to field readiness.
Electronic systems were built to be as robust as the technology would permit. They used that stuff because it was the best there was. If it kept you and your buddies alive it was good enough.
The semi-automatic rifle was a big tactical advantage over bolt action. Until it jammed.
D-day offers one of my favorite examples of "SNAFU". A unit landing on a beach was given radios that used the new-fangled quartz crystals. This meant you didn't have to rely on a tuning dial to maintain contact with your command. Made that vital link more reliable, even if it had to be operated by someone not trained on it.
Just one problem. A unit whose radios had the wrong crystals in them might as well have tried to rely on smoke signals. Left them unable to report status or request reinforcement. This happened more than once.
SNAFU claims lives in every armed conflict, from stone axes to bows and arrows on and on to the present day.
These radios were the best high-dollar stuff that could be had in its day.
Built by the low bidder.
73
Consider also the systems were a lot less complex overall. Passive components were mounted on terminal boards, exposed to easy access.
Sorta.
Equipment was just less reliable. This reality made repairability more important to field readiness.
Electronic systems were built to be as robust as the technology would permit. They used that stuff because it was the best there was. If it kept you and your buddies alive it was good enough.
The semi-automatic rifle was a big tactical advantage over bolt action. Until it jammed.
D-day offers one of my favorite examples of "SNAFU". A unit landing on a beach was given radios that used the new-fangled quartz crystals. This meant you didn't have to rely on a tuning dial to maintain contact with your command. Made that vital link more reliable, even if it had to be operated by someone not trained on it.
Just one problem. A unit whose radios had the wrong crystals in them might as well have tried to rely on smoke signals. Left them unable to report status or request reinforcement. This happened more than once.
SNAFU claims lives in every armed conflict, from stone axes to bows and arrows on and on to the present day.
These radios were the best high-dollar stuff that could be had in its day.
Built by the low bidder.
73
BJ radionut
Supporting Member and 6m addict
In radio service parts lists and schematics, paper and electrolytic capacitors are usually expressed in terms "microfarads". Short forms for microfarad include mfd, MFD, MF, UF, and uF.
https://www.justradios.com/captips.html
Remember these have specific voltage ratings also, always replace with higher or same voltage rating never lower
https://www.justradios.com/captips.html
Remember these have specific voltage ratings also, always replace with higher or same voltage rating never lower
- How about using NOS (New "Old Stock") capacitors? These are not recommended…use at own risk! As paper and electrolytic capacitors age their capacitance values drift, they dry out and they become leaky. Would you drive a 1930's automobile with NOS 70-year-old tires?
Good info.so it has 250v in the hv. Minimum 250v? Some 12v sections too so two different voltages of the same value capacitor?
Time for lamp cord test. My variac arrived Saturday. The fuse holders were gone, going to put them back first. Then......