[ARC5] Pre-ARC-5 rigs.

[AKLDGUY .]

> Also SCR-183 isn't AKA BC-229 and BC-230, they are the receiver and the
> transmitter for the set, which runs off of 12-14 VDC.  The SCR-283 is
24-28 VDC
> and the receiver and transmitter are BC-429 and BC-430, not BC-229 and
> BC-230.

Well, that is simply nit-picking over designations and 12V / 24V versions
of what are really the same sets.

It doesn't address the question of Earhart's use of "some" radio (believed
to be Western Electric make) that had plugin coil sets and non-direct
readout of dial frequency, possibly leading to a mistake in the setting of
receiver frequency.

Incidentally, my theory of what happened to Earhart has nothing to do with
a frequency setting mistake. I simply wanted background on whether a
frequency setting mistake could have occurred in order to *eliminate* that
possibility and make my theory just that little bit more likely.

73 de Neil ZL1ANM


On Mon, Aug 4, 2014 at 11:01 AM, WA5CAB--- via ARC5 <arc5 at mailman.qth.net>
wrote:

> Also SCR-183 isn't AKA BC-229 and BC-230, they are the receiver and the
> transmitter for the set, which runs off of 12-14 VDC.  The SCR-283 is
> 24-28 VDC
> and the receiver and transmitter are BC-429 and BC-430, not BC-229 and
> BC-230.  The only parts from one set that will work with the other one are
> the
> tubes, control boxes and connectors.  The only parts of any GF, RU or GF/RU
> that will work with either SCR-183 or SCR-283 are a few of the connectors
> and
> the receiver tuning head, which under various nomenclature and with various
> dials was otherwise common to several sets.  And to make matters even more
> confusing, some components in both lines (Navy and Army) only work with a
> few other number or letter models.  Plus the Army had no corollary to the
> RU
> Liason receivers or to the dynamotors used with them (which will not run a
> transmitter).
>
> Robert Downs - Houston
> wa5cab dot com (Web Store)
> MVPA 9480
>
> In a message dated 08/03/2014 17:17:17 PM Central Daylight Time,
> aaf-radio-1 at aafradio.org writes:
> > On 8/3/2014 5:52 PM, AKLDGUY . wrote:
> > >I understand that the SCR-183/283 (aka BC-229/BC-230) was Western
> > Electric
> > >designed and was assembled by no other maker.
> >
> > Well, actually, no.  It, and the original RU/GF, were designed by the
> > Aircraft Radio Corporation, who later brought you that set we all know
> > and love.  The various letter pairs between the SCR and 183 refer to
> > different contracts.  I believe the first Western Electric contract (and
> > the only one with a white transmitter RF current meter face) was the
> > SCR-AF-183 contract.  My personal set is an SCR-AE-183 - at
> > http://aafradio.org/flightdeck/1935/SCR-AE-183.html - you can see it
> > ain't no Western Electric model.
> >
> ______________________________________________________________
> ARC5 mailing list
> Home: http://mailman.qth.net/mailman/listinfo/arc5
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:ARC5 at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>