[Boatanchors] A military boatanchor resistor question.
Rbethman
[email protected]
Tue, 27 Apr 2004 22:51:21 -0400
Phil,
It sounds like I just need to go through the HQ-170AC and ship it to you
when this house is done. <BG>
You just CAN'T stau away - It's in your blood. It's like SCUBA diving -
Once THAT bug bites - You will get PLENTY wet.
You know the Scuba bug has you firmly in its grasp thye day you've been
down for close to an hour, start for the surface, AND THEN catch
yourself stopping short of the surface because you see raindrops. Then
the nerve synapses FINALLY kick in with a VERY sheepish realization that
you ARE totally wet!
Bob - N0DGN
Philip Atchley wrote:
>Hi,
>In anticipation of a BC-342 arriving here in the not too distant future,
>I've downloaded and printed the military manual on this set (1946). This is
>apparently an "early" version of the set, making it circa 1944.
>
>Today I printed an extra copy of the parts list and am going through the
>schematic, hand writing in the values of the capacitors and resistors into
>the parts list as it only shows military part numbers. I expect that I have
>most of the capacitors and plan on putting together a "kit" of capacitors
>before I dig into the set. The capacitors haven't proven to be a problem as
>I "know" that 100 mmF is actually 100pF (yes, my experience goes back to
>"pre-puff" days).
>
>Where I am having a slight problem is in resistors. There are a lot of them
>labeled on the schematic as 50M, 40M, 25M etc. I am CERTAIN that in this
>case "M" DOESN'T stand for MegOhms. Looking at the locations of these
>resistors (grids, screen grids etc) I'd guess that MAYBE a 50M resistor
>might actually be a 50K (50,000 Ohms) resistor, but it could also
>conceivably be 500K (500,000 Ohms).
>
>I checked the page in the manual that shows how to read the resistor color
>code (something I know by heart) but it said NOTHING about what 40M would
>actually mean. I presume that this is a term that any radio tech of around
>1944 would learn in tech-school or Elmers, by the time I came on the scene
>in the 50's resistors were already measured in K for K-Ohms or M for
>MegOhms.
>
>HELP!
>73 from the "Beaconeers Lair".
>Phil, KO6BB
>
>DX begins at the noise floor!
>Merced, Central California
>37.18N 120.29W CM97sh
>
>
< Bob Bethman - N0DGN
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