[Boatanchors] FS: US NAVY "MAW" Metal Crystal Box Holds 120 HC-6/U Crysta...

[WA5CAB at cs.com]

Group,

The slightly later UHF MAR, MAY and RDR all use a hermetically sealed 
crystal holder that looks similar to the later common HC-6/U but a little shorter 
(9/16" H).  Pins and spacing (0.5") looks the same.  The set for the MAW is 
probably the same type as the UHF crystals are in the 5 to mid 7 MC range.  
The crystals in one MAR set that I have are marked 41063 (the Navy Type 
Number).  Part of the printing is missing from the storage box's front cover 
(probably also from tape) but I think it says CR-7/U for the crystal holder 
type.  I have one or two others "somewhere".  If they ever turn up I'll check 
that.

Robert D.  

In a message dated 01/07/2013 04:42:16 AM Central Standard Time, 
bcarling at cfl.rr.com writes: 
> Michael, most of the hc6u crystals I have ever seen were built during the 
> 1955 - 1970 era.
> I do know that they were still making them at Cathodeon Crystals (A PYE 
> Company) when I 
> worked there in 1970 - 1971. We made mostly metal and glass case hc6u 
> style crystals all 
> day every day. The vacuum pumps, saws, lapping machines, grinding 
> machines, and 
> frequency measuring apparatus where quite a sight to see back in those 
> days!
> 
> I am still in occasional contact with the Managing Director's daughter, 
> who went to primary 
> school with me.
> 
> I have a LARGE number of hc6u crystals here. The cast majority ware date 
> coded for the late 
> 1950s and early to mid 1960s. I have not seen any with a WW2 date on them, 
> although there 
> might have been some. I wonder if anyone has examples?
> 
> I would like to see a picture of the MAW box. I have three other crystal 
> boxes here. They all 
> hold either FT243 or FT241 rocks. There is the BX40, the CS137 and another 
> one like a 
> drawer that holds FT241 rocks and has no name plate. $15 is a good deal on 
> any crystal box. 
> 
> Bry Carling, AF4K Crystals
> 
> On 6 Jan 2013 at 14:45, Charles Ring wrote:
> 
> 
> >Did HC-6/U crystals exist as far back as WWII? I have a possibly
> >similar 
> >metal box that holds 84 FT-243 crystals.
> >
> >
> >
> >
> >On 1/6/2013 0809, Michael, W1RC wrote:
> >>Hi Gang:
> >>
> >>This is a cool old WW-II US Navy crystal box that was part of the
> >>Model MAW portable VHF transmitting and receiving equipment. It
> >holds 
> >>120 crystals in the HC-6/U holder (I believe this it is what it is
> >>called). Has the paper index of the original crystals but the
> >actual 
> >>crystals are not included. The paint on the top cover is missing
> >in 
> >>some spots which is because somebody put a piece of shipping tape
> >on 
> >>the cover and it removed some of the paint when it was removed.
> >>
> >>
> >>If interested please reply by e-mail.
> >>
> >>73,
> >>
> >>Michael, W1RC 

Robert & Susan Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480