[MRCA] TBX operations from Quantico, VA

[Ray Fantini]

What TBX were you using? A TBX-8 or one of the older designs? I have always been leery of the newer design of the 8 although it has many improvements such as a microphone preamplifier, Transmitter MO separate from PA and a T/R switch. The more primitive TBX-6 had such a simple design receiver using almost all 34 tubes that it was hard to fail and the signal tube transmitter had a charm all it own. The lack of an AVC system dose makes it a bear in close in net operations.  I would love to get one of the old 6 series again and this time do a different design for the external power supply with modern components. For reasons I cannot comprehend have no desire to run a TBX-8 though. To bad about the failure today but have to admire your willingness to bring everything out and try. Did today’s activities have anything to do with the Marine Corps Museum and the anniversary of troops landing on Guadalcanal on the 7th or VJ Day on the 15th?

Ray F

________________________________
From: mrca-bounces at mailman.qth.net [mrca-bounces at mailman.qth.net] On Behalf Of Rob Flory [farmer.rob.flory at gmail.com]
Sent: Sunday, August 18, 2013 3:24 PM
To: mrca
Subject: [MRCA] TBX operations from Quantico, VA

Here's the report:
9:00 Arrive at site and start setting up set.
9:45 Antenna up, receiving signals on receiver, make test transmission on 3885 AM to local receiver.
10:00 Receiver quits, voltages show OK.  Clean T/R switch, tuning cap, bandswitch.  No joy.  Voltage checks show no plate voltage on detector tube.  RF bypass on plate determined to be shorted.  No spare, end of exercise.

Thanks for tuning in.

RF
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