From: "Gerry" 
Subject: RE: [drakelist] T-4XB Tyco Filters


It's not the same Tyco! The Tyco we now have originally was named
Wheelebrator-Frye before they changed name. I know because I used to
work directly across their private aircraft hangar. We never knew what
kind of business they were in (or what kind of people they were) until
much, much later. They always had their private jets warming up in the
morning until a couple of Checker limousines showed up from Hampton, NH.
A few guys in suits carrying briefcases stepped out and boarded the
aircraft. Had nothing to do with Drake. I couldn't afford the new Drake
TR-7 then so I ran my old C line. I still have it. 

-----Original Message-----
From: owner-drakelist{at}www.zerobeat.net
[mailto:owner-drakelist{at}www.zerobeat.net] On Behalf Of Garey Barrell
Sent: Sunday, September 21, 2003 5:38 PM
To: John; Drakelist
Subject: Re: [drakelist] T-4XB Tyco Filters


John -

I knew Tyco sounded familar to me.   Aside from the T-R 
relay that is!

I have a T-4XB with blue "C-F Networks - div of Tyco" 
filters and a 17k serial number.  So that puts it right 
about in the middle of the run.  A later B has "Network 
Sciences" silver filters and a 19k serial number, or pretty 
near the end of "B" production.

Guessing earlier units had "C-F Networks" filters before 
Tyco bought them out.  (Like they did Potter & Brumfield and 
a hundred or so other companies.!)

73, Garey - K4OAH
Atlanta

John wrote:

> Hi Garey,
> 
> Thanks for the tip!  I don't know the serial number of the rig the
Tyco
> filters came out of, but I'll see if I can obtain it.  I purchased the
> filters for a T-4XB that isn't acting like it should right now.
> 
> 73,
> 
> John W0DC
> 
> ----- Original Message -----
> From: "Garey Barrell" 
> 
> 
>>John -
>>
>>I don't know the answer to your specific question, but you
>>might compare your unit serial numbers to the Serial Number
>>Registry at:
>>
>>http://www89405.temp.w1.com/DrakeSerialDatabase.htm>
>>
>>You should be able to place them in the production.
>>
>>73, Garey - K4OAH
>>Atlanta
>>
>>John wrote:
>>
>>>Anyone have an idea when Drake used USB and LSB crystal filters
> 
> manufactured
> 
>>>by Tyco in the T-4XB transmitter (early/mid/late production)?  (The
two
>>>T-4XB's I've owned up to this point have used CF International
filters)
>>>
>>>Thanks,
>>>
>>>John
>>>
>>
> 
> 

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