Garey Barrell <[EMAIL PROTECTED]> made an utterence to the drakelist gang ---------------------------------------------------------------------- Dave -
Yes, I believe that to be the case.
The transceive line carries the "Premix" signal (HFO - PTO) between the two units, so an HFO crystal should not be required in both units.
Obviously the Band switches on both units have to be on 1.5 - 3.0 band, and the crystal switch on the R-4C would have to be on "1" or whatever socket the 12.6 MHz crystal is in and the crystal switch on the T-4XC would have to be on Norm.
The T-4XC is also stretched to hit the bottom of the 160M band at 1.8 MHz. Sometimes a little touch-up of the alignment is needed to get it down to 1.8MHz. Guess they didn't want us to get down into the BC band!
73, Garey - K4OAH Atlanta
Drake C-Line Service Manual <http://hr99.home.mindspring.com/R-4C_Servicez/>
David Havel wrote:
Gary,
From your email below, are you saying that you can xmit. (in RCVR mode) withonly a crystal in the receiver, and without having one in the T-4XC? Mine doesn't seem to want to tune or load on 160 meters with the xtal installed in only my R-4C.
Thanks in advance for clarification!
73, Dave - NO3K
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Garey Barrell Sent: Sunday, February 27, 2005 10:16 PM To: Eric Webner; Drakelist Subject: Re: [drakelist] 20.8 MHz (30 Meter) T-4XC Crystal wanted
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 folks like to listen to CW at a somewhat lower frequency.
73, Garey - K4OAH Atlanta
Drake C-Line Service Manual <http://hr99.home.mindspring.com/R-4C_Servicez/>
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 recommended 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
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