[Amps] 8877 Filament choke

[jeremy-ca]

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 at rogerhalstead.com>
To: "Bob Maser" <bmaser at tampabay.rr.com>; "Rick Stealey" 
<rstealey at hotmail.com>; <amps at 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 at hotmail.com>
>> To: <amps at 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
>>>
>>>
>>> _________________________________________________________________
>>> Peek-a-boo FREE Tricks & Treats for You!
>>> http://www.reallivemoms.com?ocid=TXT_TAGHM&loc=us
>>> _______________________________________________
>>> Amps mailing list
>>> Amps at contesting.com
>>> http://lists.contesting.com/mailman/listinfo/amps
>>
>> _______________________________________________
>> Amps mailing list
>> Amps at contesting.com
>> http://lists.contesting.com/mailman/listinfo/amps
>
> _______________________________________________
> Amps mailing list
> Amps at contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>