RE: [drakelist] 20.8 MHz (30 Meter) T-4XC Crystal wanted

[Eric Webner]

It leaves one out in the dark a bit, since that column is blank. Using some of the other nearby crystals has an explicit range you cannot use it on, probably due to the spurs that Garey referred to.

 

Eric

David Havel <[EMAIL PROTECTED]> wrote:

...which, I believe infers that you should not use it between 10.1 through 10.150.

 

Correct?

 

73,

Dave - NO3K

---

From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Eric Webner
Sent: Monday, February 28, 2005 7:36 PM
To: [EMAIL PROTECTED]; 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 <[EMAIL PROTECTED]> wrote:

Garey Barrell <[EMAIL PROTECTED]>made an utterence to the drakelist gang
----------------------------------------------------------------------
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 <[EMAIL PROTECTED]>/* 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
> .


----------------------------------------------------------------------
On Behalf of Garey Barrell <[EMAIL PROTECTED]>
Submissions: drakelist@www.zerobeat.net
Unsubscribe: [EMAIL PROTECTED] - unsubscribe drakelist in body
Hopelessly Lost: [EMAIL PROTECTED] - help in body of message
Zerobeat Web Page: http://www.zerobeat.net
Brought to you courtesy of TLCHost.net http://www.tlchost.net/
----------------------------------------------------------------------

---

Do you Yahoo!?
Yahoo! Mail - 250MB free storage. Do more. Manage less.

---

Do you Yahoo!?
Yahoo! Mail - You care about security. So do we.