[Amps] Blown anode choke TL922

[Jim W7RY]

Isaac.
 I attempted to re-wind an Ameritron choke and was not too successful. I did 
not have the EXACT size wire that was on the original choke. That makes a 
huge difference.

I would attempt to re-wind your choke or just replace it with an Ameritron 
choke. I understand you're not in America but it may be worth it.

Please keep us informed and good luck!

Jim


--------------------------------------------------
From: "4Z4TL_IARC_300" <4z4tl at iarc.org>
Sent: Sunday, April 24, 2011 12:01 AM
To: <amps at contesting.com>
Cc: <w7ry at inbox.com>
Subject: Re: Blown anode choke TL922

> Hi Jim
> The choke is a home-made replica (quite close) of the original stock.
> I wounded it myself, but never evaluated it with a Dip meter.
> (I counted turns, measured spacings, wire diameter & inductance, & copied 
> it to my best ability).
>
> In the last 2-3 months main bands were 20,15,10 & 12, mostly in RTTY at 
> 400-600w out.
>
> The amp was on 20m when this happened, no TX. I just flipped from SSB to 
> CW intending to QRT.
> Since the prolonged heating is obvious, I think this has been building up 
> for the last weeks / months.
>
> MODS to the amp are numerous: pse see a page I prepared a year ago after 
> finishing the work :
> http://www.iarc.org/~4z4tl/TL922/index.html
> Tks , Isaac 4Z1TL
>
>> Date: Sat, 23 Apr 2011 07:50:47 -0700
>> From: "Jim W7RY" <w7ry at inbox.com>
>> Subject: Re: [Amps] Blown anode choke TL922
>> To: "4Z4TL_IARC_300" <4z4tl at iarc.org>, <amps at contesting.com>
>>
>> What frequency have you been operating on? What other sort of mods have 
>> been
>> to the amplifier? Is the plate choke stock or has it been rewound?
>> 73
>> Jim W7RY
>
>
>
>
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