[MRCA] Mystery T-195 VMO Project

B. Smith smithab11 at comcast.net
Thu Jan 25 17:07:27 EST 2024


The mystery project consists of a Collins VMOtest jig and extension 
cable for the T-195 transmitter. The jig is used for "Range'"adjustment 
of the VMO.Construction details include mounting on a plywood base and 
using "Knurled" nuts for easy mechanical adjustment. Extension cable 
power connectors were easily located on ePay. Sadly I am running out of 
Venier Dials that I purchased many years ago at Akihabara, made by Umeza 
which if I remember made a nice copy of the S-38. Got a bunch of the 
dials for sukoshi Yen. After working on several of the VMO plug in 
modules it is in my opinion that the VMO module wiring is prone to 
failure. All associated wiring and components are stuffed into a tiny 
compartment underneath the chassis and can easily short out - doesn't 
look like Collins put it together - perhaps a vendor. Thecoax cable 
output connection is subject to breakage inside the small compartment. 
Don't move the coax cable! But I made notes and also calibration end 
point readings as the T.O does not contain any info.

See attached.

K4CHE
-------------- next part --------------
A non-text attachment was scrubbed...
Name: vmok4che.jpg
Type: image/jpeg
Size: 161097 bytes
Desc: not available
URL: <http://mailman.qth.net/pipermail/mrca/attachments/20240125/cf9f2e17/attachment-0001.jpg>


More information about the MRCA mailing list