[ARC5] [Milsurplus] Old surplus catalogs are always fun to look through
Al Klase
ark at ar88.net
Sat Nov 19 15:23:30 EST 2022
Yes, Their outputs were wired in series-parallel so at least two of
them had to vote to set off the device at a specific altitude, but one
couldn't screw up and cause and early detonation or a none detonation.
ARK Sig Block Al Klase - N3FRQ
Jersey City, NJ
http://www.skywaves.ar88.net/
On 11/19/2022 1:46 PM, Gene Smar via ARC5 wrote:
> Four Tailend Charlies were used as altimeter fuses in the Little Boy
> weapon. See https://images.app.goo.gl/WBdK5PidXzAskfxV6 .
>
> 73 de
> Gene Smar AD3F
>
>
> Sent from my Radio Shack TRS-80 model 100 laptop
>
> On Sat, Nov 19, 2022 at 1:21 PM, scottjohnson1 at cox.net
> <scottjohnson1 at cox.net> wrote:
> That would have likely been an APS-13 (tail end Charlie) , a
> simple pulsed
> RADAR at 450 MHz, that lit a lamp and buzzer if its signals
> bounced off
> anything.
>
> There were three equipments that had similar appearance and
> operated in the
> same band from late WWII- The APS-13 tail warning radar, the SCR-718
> (BC-788) high range pulse altimeter with J-scan CRT display, and
> the APN-1
> low range FM altimeter.
>
> Scott W7SVJ
>
> -----Original Message-----
> From: arc5-bounces at mailman.qth.net <arc5-bounces at mailman.qth.net>
> On Behalf
> Of K2GKK D C_Mac_ Macdonald
> Sent: Friday, November 18, 2022 8:35 PM
> To: Hubert Miller <Kargo_cult at msn.com>
> Cc: ARC-5 <arc5 at mailman.qth.net>; milsurplus at mailman
> <milsurplus at mailman.qth.net>
> Subject: Re: [ARC5] [Milsurplus] Old surplus catalogs are always
> fun to look
> through
>
> I don't remember now what I bought for about $5 that I think was
> some sort
> of device used in the tail of a heavy bomber. No real use to me
> but I took
> it apart for tube sockets (7-pin miniature) and whatever tubes they
> contained. The initiation of my "junk box" in about 1954.
>
> Mac , K2GKK/5 in OKC, OK
>
> Sent from my iPad
>
> On Nov 18, 2022, at 21:25, Hubert Miller <Kargo_cult at msn.com> wrote:
>
> >> It's surprising how much of this stuff is still around after 80
> years.
> But really, what can you do with a BC-645 anyway?
> >> IFF and RADAR were crucial for WWII, but largely useless for
> civilian
> experimenters. I suspect most of that gear was eventually
> scavenged for
> parts or just sat on a shelf.
> >> One section caught my eye: magnetron magnets. I built a nuclear
> magnetic
> resonance demonstration setup for an AP chemistry project in high
> school,
> based on a writeup in Scientific American.
> >> Kinda wish now I hadn't tossed out all my John Meshna catalogs
> when we
> moved 35 years ago. Still have a good assortment of Fair Radio
> though.
> >> Dave N9ZC
> >
> > Remember this line in the catalog? "Meshna's Mashuganas " ?
> >
> > OH yeah, from the Fair catalog:
> > "Same but different"
> > "Reparable" ( never got repaired )
> >
> > -Hue Miller
> >
> >
> >
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