[Amps] Blown anode choke TL922

[4Z4TL_IARC_300]

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