I think he answered his own question Alex. A home brew choke without
checking resonances would be my guess.
It takes very little deviation to shift that resonance which is almost
always between 25-28MHz in that style choke. Its why Ameritron gave up on it
and went to the sectional style which goes back to the National R-175 of the
late 30's.
Carl
KM1H
----- Original Message -----
From: "Alek Petkovic" <vk6apk@bigpond.com>
To: "Alf Pousar" <alf.pousar@surffi.net>; <Amps@contesting.com>
Sent: Sunday, April 24, 2011 4:59 AM
Subject: Re: [Amps] Blown anode choke in TL-922
> In Isaac's original description, he described hearing a bang. That
> means that he had 'an event'.
>
> The browning of the wires of the plate choke is not consistent with
> the symptoms (bang) that Isaac described hearing.
>
> Something else caused that bang to be heard. A bandswitch or tuning
> capacitor flashover A popping diode or capacitor or even the cw/ssb
> switch contacts.
>
> Isaac, there must be some damage, other than that plate choke that
> you have not uncovered yet.
>
> 73, Alek.
> VK6APK
>
>
>
>
> At 04:45 PM 24/04/2011, Alf Pousar wrote:
>>Hi Isaac,
>>I guess it's due to the fact you are running RTTY. The power
>>dissipation is a totally different ball game for RTTY vs SSB.
>>Your working is similar to keydown for the entire qso during transmission.
>>This is orfcourse only my opinion.
>>
>>Happy easter,
>>Alf OH2QM
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>>
>>
>>
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