[Amps] Ameritron AL-1500 Problem

[Jose E. Ribeiro Sa]

Thank you Keith
Yes I just tested it with a second tranceiver and its the same.


73   Jose  CT1EEB

----- Original Message ----- 
From: "Keith Dutson" <kdutson at sbcglobal.net>
To: <amps at contesting.com>
Sent: Wednesday, October 05, 2005 1:31 PM
Subject: Re: [Amps] Ameritron AL-1500 Problem


> Sounds like a TR relay problem, such as sticking or intermittent ground.
> Have you checked the TR connection from the transceiver?  Do you have a
> second transceiver?  If so, does the problem continue with the other
> transceiver?
>
> 73, Keith NM5G
>
> -----Original Message-----
> From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com] On
> Behalf Of Jose E. Ribeiro Sa
> Sent: Wednesday, October 05, 2005 8:19 AM
> To: amps at contesting.com
> Subject: [Amps] Ameritron AL-1500 Problem
>
> Good afternoon
> Maybe some of you can give me a clue about this problem Iam experiencing
> with my Ameritron AL-1500 amp.
>
> A couple of days ago I switched on the AL-1500 and when I started TXing
> there was no output power at all (zero watt), the HV was OK (3300 Volts),
> but no IP and power mesurements in the meter. Theres an ALC reading.
>
> I thought in could be some kind of bad contact in the 8877 lamp so I took 
> it
> off cleaned the lamp socket metal contacts put in on again and the Linear
> amp. was working ok at full power. === so far so good ===
>
> Next day when I turned it on is WAS NOT TXing again, the problem was still
> there but after some tries the amplifier started transmitting at full 
> power
> again and worked all day long.
>
> This morning again the same, but this time its not transmitting at all, I
> tried to to see if I could detect any malfunction but nothing, all seems 
> OK,
> the amp. seems to be working ok, but no Power out no matter what I do.
> I also noticed that the impedance between the radio and the amp has 
> changed
> because SWR in the radio is way too high (and before the match was perfect
> without SWR).
>
> I will apreciate your feedback and ideas about what might be originating
> this problem.
>
> 73   Jose  CT1EEB
>
>
>
>
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