[Milsurplus] CRV-46123...what is it?...

[Morrow, Michael A.]

The DZ-1 and DZ-2 receivers seem fairly common yet (but I'm still =
looking for a dynamotor-filter unit for my DZ-2, and the loop I'll just =
forget about).  Loop positioning is entirely manual and mechanical at =
the bottom of the loop base, and the only indication of loop orientation =
is a couple of vernier scales at the loop base.

Does anyone know if the USN developed a more capable airborne DF set =
than the DZ in WWII (other than adopting the USAAF's excellent SCR-269 =
ADF, as is apparent in some WWII USN aircraft photos)?  The DZ seems =
very very crude in comparison to the SCR-269.  The design seems to date =
from the mid-1930s.  And although it covers 15 to 70 kcs and 100 to 200 =
kcs that the SCR-269 doesn't, the tuning dial isn't calibrated directly =
in frequency.  A table has to be used.

The USAAF seems to have been leaps ahead of the USN in airborne ADF and =
ILS technology by the end of WWII.  I'd bet a WWII SCR-269 ADF and a =
RC-103 localizer/ARN-5 glideslope/RC-193 marker beacon system would =
almost be serviceable today except for the limited frequencies =
selectable on the localizer and glideslope sets.  OTOH, maybe the USN's =
ZB/YG homing system was all the USN really needed.

You got to love the technology and engineering found in these old sets, =
even though most boatanchor radio fans could care less about DF, ILS, or =
homing systems.

73,
Mike / KK5F

> -----Original Message-----
> From: Mike Hanz=20
>=20
> Try RCA DZ-1, Ken.  Quite a sophisticated loop antenna that goes with=20
> this receiver, and unfortunately it is usually the piece that=20
> is missing.
>=20
> Kenneth G. Gordon wrote:
> > Anyone know exactly what this Navy DF set is?