6M is VHF, use a choke there and on higher bands. A 4" 43 mix 1/2" ferrrite
rod about 75% filled with #14 works well. Smaller wire can be used if you
have to fine tune the filament voltage.
Carl
KM1H
----- Original Message -----
From: "Roger" <sub1@rogerhalstead.com>
To: "Bob Maser" <bmaser@tampabay.rr.com>; "Rick Stealey"
<rstealey@hotmail.com>; <amps@contesting.com>
Sent: Thursday, November 15, 2007 5:41 PM
Subject: Re: [Amps] 8877 Filament choke
>
>
>
>> With an indirectly heated cathode you don't need a filament choke, in the
>> HF
>> region.
>
> What about when running one on 6-meters?
>
> Roger (K8RI)
>
>>
>> Bob W6TR
>> ----- Original Message -----
>> From: "Rick Stealey" <rstealey@hotmail.com>
>> To: <amps@contesting.com>
>> Sent: Thursday, November 15, 2007 9:26 AM
>> Subject: [Amps] 8877 Filament choke
>>
>>
>>>
>>> Info in the ARRL handbook seems to indicate that it might be better to
>>> not
>>> use a filament choke on an 8877 amplifier, that it might cause more
>>> problems than it solves.
>>> I wonder what you guys who have homebrewed 8877s think?
>>>
>>> Rick K2XT
>>>
>>>
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>>
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>
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