[ARC5] [Milsurplus] Radio on the Frontlines: WWI and WWII | DPLA

[Hubert Miller]

I don't recall that component level of discussion in the Trenkle books. I may be wrong, but if so, it had to be cursory discussion.

Now "Crystal Clear": theoretically, that sounds right, but I have never read any account of this becoming a problem. Perhaps the selectivity of the German 33-38 MHz tank radios was wide enough to
compensate for this. Like the aircraft radios of the era.

On the other hand now: I think it was in "Spearhead" that was mentioned an occasion where some U.S. tanks could not communicate because they were not crystalled up on like channels. Allso
probably a rare occurrence.
-Hue

>Temp comp when different masses are involved is always tricky.  It's in play with typical commercial boat anchors and affects mil gear as well.  The mass of a big old ceramic coil is far different than a relatively smaller cap...and who knows which is near that hot tube.  I'm sure users turned on equipment early and tried to stabilize it as much as possible.

In Thompson's 2007 book, "Crystal Clear" the point is made about the utility of having precise frequency setting and being able to rapidly punch preset channels.  The example given is a tank engagement where different groups of tanks would be assigned different VHF frequencies and central command another.  In a tank battle seconds matter so rapidly and confidently changing channels in a vibrating tank is a major advantage while coordinating your attack/defense.  It's easy to believe that push button crystal control would beat the heck out of mechanical presets and manual fine adjustments.

Dennis AE6C





On Mon, Mar 9, 2020 at 8:26 PM Tom Lee <tomlee at ee.stanford.edu<mailto:tomlee at ee.stanford.edu>> wrote:
That agrees with what I was told at the Deutsches Museum. Does Trenkle
talk about this in one of his books?


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