[Collins] First parts needed for a 32S3 project

[antqradio at sbcglobal.net]

Well now, I obviously need new glasses!Jim  

      From: Dr. Gerald N. Johnson <geraldj at netins.net>
 To: collins at mailman.qth.net 
 Sent: Tuesday, January 3, 2017 10:15 AM
 Subject: Re: [Collins] First parts needed for a 32S3 project
   
Doug's frequency is right. 13.155. 3.155 MHz above the lower edge of the 
desired tuning range. But 290-9027-00 is the part number for the 10.155 
for 7.0 to 7.2. Part number should be 290-9042-00.

The holder is HC6/U, parallel fundamental mode, probably the industry 
standard 32 pf capacitance. I'm sure International Crystal Manufacturing 
knows the details and can deliver a perfect crystal. IF ICM has 
forgotten the details they can easily measure a sample sent to them and 
make the desired frequencies.

Surplus Sales of Nebraska has many Collins crystals but not these two.

Remember that when connected for transceiver mode, the 32S uses the 
crystal oscillator from the 75S and when switched to RX VFO mode uses 
the 75S PTO but can run the PTO independently  in TX VFO mode. There is 
enough tolerance in the crystals that withtout using the receiver 
crystals for the transmitter they wouldn't necessarily be on the same 
frequency, could be off 3 or 4 kHz, that won't work for transceiving 
without some sort of Receiver incremental tuning. There can be small 
errors in the BFOs that is hard to fix. Inrad.net has replacement BFO 
crystals.

There are a few crystal packs on epay that appear to have these 
crystals. ICM does good work but would cost less than these crystal packs.

73, Jerry, K0CQ, Technical Adviser to the Collins Radio Association.

On 1/3/2017 1:19 AM, antqradio at sbcglobal.net wrote:
> DougI think one of the crystal frequencies is a bit off.
> Part number 290-9027-00 should be 13,355.000 KHz for the 10.0 to 10.2 MHz band
> Part number 290-9082-00 seems to be OK.
> Funny that the crystal holder type and capacitance isn't specified in the manual.HNY,Jim
>
>        From: Doug Hensley<w5jv at hotmail.com>
>  To: "collins at mailman.qth.net"<collins at mailman.qth.net>
>  Sent: Monday, January 2, 2017 7:32 PM
>  Subject: [Collins] First parts needed for a 32S3 project
>
> Hello to everyone, this is my first post to this list.
>
>
> I want to buy a working DX Engineering plug-in Speech Compressor LC-1 unit for my 32S3.  If you have something available, please let me know price&  condition.
>
>
> Also I need these crystals:
>
>
> 13155.000  10.0 to 10.2 Mz  part number 290-9027-00
>
>
> 10577.500    18.0 to 18.2 Mz  part number 290-9082-00
>
>
> Cheers,
>
>
> Doug W5JV
>
>
>
>
>
>
>
>
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