From: drakelist-requ...@zerobeat.net<drakelist-requ...@zerobeat.net>
Subject: Drakelist Digest, Vol 20, Issue 19
To: drakelist@zerobeat.net
Date: Sunday, February 14, 2010, 11:00 AM
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Today's Topics:
1. T-4XC issues (Brett Forehand)
2. Re: T-4XC issues (Garey Barrell)
----------------------------------------------------------------------
Message: 1
Date: Sat, 13 Feb 2010 18:55:38 -0800 (PST)
From: Brett Forehand<brett_foreh...@yahoo.com>
Subject: [Drakelist] T-4XC issues
To: drakelist@zerobeat.net
Message-ID:<752047.86310...@web57008.mail.re3.yahoo.com>
Content-Type: text/plain; charset=us-ascii
Hey everyone, still trying to sort out the "new to me"
Drake twins. Replaced caps in RX/TX, installed new
finals in TX. PS rebuilt using Heathkit Shop's
kit. Final tubes test 100% ouput. Having trouble
loading up transmit. On 80 meters, only getting about
20 watts out. 10 meters, the output goes up to about
150 watts out, and is in oscillation. Output goes up from
the low bands to the oscillation/high output state on the
high bands. Power will hold at normal on 20 meters,
but then "bam"! goes into oscillation. Testing
is being done into a dummy load. Can someone point me
in the right direction as to what is wrong?
Tnx and 73,
Brett
------------------------------
Message: 2
Date: Sat, 13 Feb 2010 23:19:12 -0500
From: Garey Barrell<k4...@mindspring.com>
Subject: Re: [Drakelist] T-4XC issues
To: Drakelist<drakelist@zerobeat.net>
Message-ID:<4b7779c0.4080...@mindspring.com>
Content-Type: text/plain; charset=ISO-8859-1;
format=flowed
Brett -
Are the Final tubes the same brand?
What brand are they?
Have you done the Final neutralization? Section 5-10
in the manual.
Does the RF TUNE peak in the right areas of the scale?
73, Garey - K4OAH
Glen Allen, VA
Drake 2-B, 4-B, C-Line& TR-4/C Service Supplement
CDs
<www.k4oah.com>
Brett Forehand wrote:
Hey everyone, still trying to sort out the "new to me"
Drake twins. Replaced caps in RX/TX, installed new
finals in TX. PS rebuilt using Heathkit Shop's
kit. Final tubes test 100% ouput. Having trouble
loading up transmit. On 80 meters, only getting about
20 watts out. 10 meters, the output goes up to about
150 watts out, and is in oscillation. Output goes up from
the low bands to the oscillation/high output state on the
high bands. Power will hold at normal on 20 meters,
but then "bam"! goes into oscillation. Testing
is being done into a dummy load. Can someone point me
in the right direction as to what is wrong?
Tnx and 73,
Brett
------------------------------
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End of Drakelist Digest, Vol 20, Issue 19
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