From: "David Havel" 
Subject: RE: [drakelist] 20.8 MHz (30 Meter) T-4XC Crystal wanted


"David Havel"  made an utterence
to the drakelist gang
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...which, I believe infers that you should not use it between 10.1 through
10.150.
 
Correct?
 
73,
Dave - NO3K

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From: owner-drakelist{at}www.zerobeat.net
[mailto:owner-drakelist{at}www.zerobeat.net] On Behalf Of Eric Webner
Sent: Monday, February 28, 2005 7:36 PM
To: k4oah{at}mindspring.com; Drakelist
Subject: Re: [drakelist] 20.8 MHz (30 Meter) T-4XC Crystal wanted


Garey,
 
The T-4XC manual indicates that if you use a 21.1 MHz crystal, the usable
freq is 10.25 - 10.5 MHz. The column that says "Do Not Use Between" is
blank.
 
I would like to add 30 meters and possibly 17 also, but it seems to have a
few caveats.
 
73,
 
Eric KA8FAN


Garey Barrell  wrote:


Garey Barrell made an utterence to the drakelist gang
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Eric -

There is a very good reason for using the 20.8 MHz crystal instead of 
the 21.1. There are several spurious outputs in and around 10 MHz 
when using the 21.1. This is specified in the T-4X(any) manual with "do 
not use" ranges for certain crystals. Keep in mind that the PTO 
operates in and around 5 MHz.....

And yes, you can transceive on any crystal you have in the receiver, but 
the same problems occur with a 21.1 MHz crystal in the R-4(any). If 
you just want to listen to 10.1 - 10.150 the 21.1 MHz crystal will work 
in the receiver. But don't transceive using that crystal. Transceive 
isn't all that satisfactory on CW anyway, since the offset is around 900 
Hz and most f! olks like to listen to CW at a somewhat lower frequency.

73, Garey - K4OAH
Atlanta

Drake C-Line Service Manual




Eric Webner wrote:

> I wonder if the 21.1 Mhz crystal would work as well. It sure would be 
> a lot easier to operated the vfo, since the band would start at 10.0 
> Mhz instead of 9.7 or whatever the manual says.
> 
> Can you experts tell me what it takes to transceive on accessory 
> crystals? Can I get a crystal for the receiver, set the T-4XC mode 
> switch to "RECEIVE" and be able to transmit and receive on the 30 
> meter band?
> 
> 73,
> 
> Eric KA8FAN
>
> */David Havel /* wrote:
>
> Hello gang,
>
> I'm in search of a 20.8 MHz crystal for my T-4XC in order to put
> it on 30 meters. According to the manual, the 20.8 unit is the
> only recom! mended crystal for use on this band. If you have one
> you'd like to sell, please email me what you're asking for it!
>
> Thank you in advance & 73,
>
> David Havel - NO3K
>
> ------------------------------------------------------------------------
> Do you Yahoo!?
> Read only the mail you want - Yahoo! Mail SpamGuard 
> . 


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