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Technical Tips from Mark W. Persons |
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Temporary Repair for a Collins/Continental FM Drive Belt |
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Almost
anyone who has worked on a Collins or Continental FM transmitter, knows
that there is a drive belt that connects the IPA Tuning shaft to a
vacuum variable capacitor under the PA tube. Here is a photo
looking up into the IPA compartment of a
Collins 831F-2 10 KW FM Transmitter.
The red drive belt on the left is not the original. It is a TEMPORARY substitute, which was used until an original replacement could be procured. |
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This photo shows the
original worn-out belt on the top. It failed because it dried out
with age. The exact replacement belt is the blue one on the lower
right. The lower left temporary belt is a rubber "O" ring from a
3" EIA transmission line connector. These are commonly found at FM
transmitter sites as spares and make an excellent TEMPORARY drive belt. 2007/10/04 |
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The stories go on and on.
Stop in again sometime. I'll leave the soldering iron on for you.
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Questions? Email Mark Persons: teki@mwpersons.com |
