[MRCG] SCR-522 XTALS and other XTALS Questions

Mon Mar 3 19:32:30 EST 2014

The SCR-522 was , is, a WWII VHF radio set. I think the IFF was BC-645. A 
lot of the 645s got used for Ham VHF too.

EdZ

-----Original Message----- 
From: Dan Dolan
Sent: Monday, March 03, 2014 3:58 PM
To: 'West Coast Military Radio Collectors Group'
Subject: Re: [MRCG] SCR-522 XTALS and other XTALS Questions

SCR522 - was a WWII IFF set that transmitted on the 100-156 MHZ VHF band.
The xtal oscillator doubles a bunch of times to get there!
K4RN

-----Original Message-----
From: mrcg-bounces at mailman.qth.net [mailto:mrcg-bounces at mailman.qth.net] On
Behalf Of willi6 at starpower.net
Sent: Monday, March 03, 2014 4:52 PM
To: mrcg at mailman.qth.net
Subject: Re: [MRCG] SCR-522 XTALS and other XTLA Questions

I recently came across a BX-40 Crystal Box with most of the crystals.  It
starts at Channel 270 (5675 KCS) and goes to Channel 389 (8650 KCS).  It is
missing four (4 ) c rystals , some of which which I believe were the typical
useful 40-Meter rocks.  The missing channels are 330 (7175),  325 (7050),
324 (7025), and 322 (6975),

Any idea what radio type this "Rock Collection" was typically associated
with?

73,  Dave

Dave Williams - K7HMP/4
Stafford, Virginia

----- Original Message -----

From: mrcg-request at mailman.qth.net
To: mrcg at mailman.qth.net
Sent: Monday, January 20, 2014 12:00:15 PM
Subject: MRCG Digest, Vol 20, Issue 14

Today's Topics:

   1. Re: SCR-522 xtals (Chuck McClurg)
   2. Re: SCR-522 xtals (boatanchor at martasystems.com)
   3. Re: SCR-522 xtals (mac)
   4. Re: SCR-522 xtals (boatanchor at martasystems.com)

---------------------------------------------------------------------- 

Message: 1
Date: Sun, 19 Jan 2014 09:17:47 -0800
From: "Chuck McClurg" <j-mcclurg at sbcglobal.net>
To: "West Coast Military Radio Collectors Group"
        <mrcg at mailman.qth.net>
Subject: Re: [MRCG] SCR-522 xtals
Message-ID: <9B19EF8DEDB14F0DB489B451D15587AF at commodesktop>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
        reply-type=response

Well after looking for a Receive crystal with no luck I am open to the best
method to "grind" one of the ones I have up to the correct frequency.

What is the best way to go with trying this?  I have trolled the internet
and found a couple of ideas but wanted to ask if anyone has tried any of
them with any
sucess.

Any ideas welcome.............................

Chuck
N7UVZ

----- Original Message ----- 
From: "Chuck McClurg" <j-mcclurg at sbcglobal.net>
To: "West Coast Military Radio Collectors Group" <mrcg at mailman.qth.net>
Sent: Friday, January 17, 2014 2:55 PM
Subject: Re: [MRCG] SCR-522 xtals

> Group:
>
> Well after going through 267 crystals and calculating every which way
> (Thank God for Excell!) I find I have ONE transmit crystal for 144.45 Mcs
> but no receriver crystal.....:-(
>

------------------------------ 

Message: 2
Date: Sun, 19 Jan 2014 19:04:23 -0000
From: <boatanchor at martasystems.com>
To: "West Coast Military Radio Collectors Group"
        <mrcg at mailman.qth.net>
Subject: Re: [MRCG] SCR-522 xtals
Message-ID: <D728BCB0855D4C23887DEE6D6F77E9F1 at ICEWARP>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
        reply-type=response

Hi Chuck -

When you get a chance, could you measure the B+ on your RA-62 with no load ?

After getting mine working (recapped, replaced bad bleeder, etc) my no-load
voltage is +465 volts with the power switch in the 125 position. The bias is

spot on at -150, and the filaments seem ok at +14. For comparison, my
dynamotor no-load B+ is 300 v, about what it's supposed to be...   hmmm.

Thanks
John WB6AZP

-----Original Message----- 
From: Chuck McClurg
Sent: Sunday, January 19, 2014 17:17
To: West Coast Military Radio Collectors Group
Subject: Re: [MRCG] SCR-522 xtals

Well after looking for a Receive crystal with no luck I am open to the best
method to "grind" one of the ones I have up to the correct frequency.

What is the best way to go with trying this?  I have trolled the internet
and found a couple of ideas but wanted to ask if anyone has tried any of
them with any
sucess.

Any ideas welcome.............................

Chuck
N7UVZ

----- Original Message ----- 
From: "Chuck McClurg" <j-mcclurg at sbcglobal.net>
To: "West Coast Military Radio Collectors Group" <mrcg at mailman.qth.net>
Sent: Friday, January 17, 2014 2:55 PM
Subject: Re: [MRCG] SCR-522 xtals

> Group:
>
> Well after going through 267 crystals and calculating every which way
> (Thank God for Excell!) I find I have ONE transmit crystal for 144.45 Mcs
> but no receriver crystal.....:-(
>

______________________________________________________________

End of MRCG Digest, Vol 20, Issue 14
************************************

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