"DW Holtman" <[EMAIL PROTECTED]> made an utterance to the drakelist gang
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Agree,
Thank you for the information. It makes perfect sense, since there is only 5
crystal slots, not counting the accessory slots.
This receiver came out of a TR-44B and mates to a T-4B that comes with a
built in speaker, but no PTO. Kind of interesting. I like the way they
stack together, and the "door" to add accessory crystals. However, I think I
think I would rather have a Transmitter with a PTO. Might get one soon, and
put it in the cabinet.
I was struggling with the transmitter power out, then discovered that there
was no injection voltage out of the Receiver. There is a strong injection
signal to the cathode of V2, so there is not much left between the cathode
of V2 and the RCA connector.
Thought I would do a complete alignment and get the receiver working well
before going on to the transmitter.
Thank you again for your as usual great information.
Best,
DW Holtman
WB7SSN
----- Original Message -----
From: "Garey Barrell" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Sunday, December 09, 2007 3:36 PM
Subject: Re: [drakelist] R-4B alignment question
Garey Barrell <[EMAIL PROTECTED]> made an utterance to the drakelist
gang
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DW -
The 12.6 MHz crystal is required to align the 160M band. If you don't
have one, that's probably why you have no signals on 160!! :-)
The crystal was optional, and would be in an accessory crystal socket and
selected by the XTALS switch for 160M operation.
73, Garey - K4OAH
Glen Allen, VA
Drake 2-B, 4-B & C-Line Service Supplement CDs
<www.k4oah.com>
DW Holtman wrote:
Hello,
I'm in the process of going through a R-4B. Have already recapped the
paper and electrolytic caps and changed out of tolerance resistors. Now
it is working great from 40 meters and up. But, I have low sensitivity on
80 meters and almost no Receive on 160. The Cal barely moves the S-Meter
on 80 and it doesn't budge on 160. I'm going to do a complete alignment.
After looking through the manual, the section on aligning the "Antenna,
RF and Injection circuits", call for a 12.6 MHZ crystal. Is there a work
around for the 12.6 Mhz crystal? I don't have one.
Thank you in advance.
Best,
DW Holtman
WB7SSN
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