Where did an 8877 come from into this conversation?
Carl
KM1H
----- Original Message -----
From: "Bill Fuqua" <wlfuqu00@uky.edu>
To: "Carl" <km1h@jeremy.mv.com>; "Angel Vilaseca" <avilaseca@bluewin.ch>;
<amps@contesting.com>
Sent: Wednesday, December 15, 2010 12:44 PM
Subject: Re: [Amps] 4 X 4-400C or 4 X 3-500Z HF amplifier
> To use a 8877 in a 4CX1000A socket you have to shorten the
> center pin. It will bottom out in the 8877 tube. But after doing that
> you can still use the 4cx1000A tube ( but not in GG naturally).
> 73
> Bill wa4lav
>
>
> At 10:44 AM 12/15/2010 -0500, Carl wrote:
>>Looking at the 4CX1000A and 5CX1500A sockets I believe the breech lock
>>components of the 4CX1000A/4CX1500B socket can be adapted. The 3CX1000A7
>>socket also uses the same components.
>>
>>Once the suppressor ring is firmly attached to the chassis then attach the
>>remaining components from underneath and using at least 2 connections for
>>the filament.
>>
>>This doesnt make for easy removal so also investigate the possibility of
>>modifying the socket. Those sockets appear to be fairly common in Central
>>and South America as obsolete FM and military transmitters are scrapped.
>>
>>Carl
>>KM1H
>>
>>
>>----- Original Message -----
>>From: "Angel Vilaseca" <avilaseca@bluewin.ch>
>>To: <amps@contesting.com>
>>Sent: Wednesday, December 15, 2010 8:26 AM
>>Subject: Re: [Amps] 4 X 4-400C or 4 X 3-500Z HF amplifier
>>
>>
>> > Hi,
>> >
>> > I bought a NOS 5CX1500A. I plan to use it in an HF amp.
>> >
>> > Sockets for this tube are rather scarce. Has someone tried to use it in
>> > a home-made fixture?
>> >
>> > I know, a tube is supposed to be used in the original socket, but this
>> > is HF, not VHF or UHF, and there is the example of another ceramic
>> > tube,
>> > the GS 35B, for which there is simply no socket available.
>> >
>> > So, provided the ceramic isolators receive enough airflow ( maybe I
>> > could use a couple of small computer fans) and connections and
>> > decoupling caps leads are kept short, could this work?
>> >
>> > Anyone tried this before?
>> >
>> > Vy 73
>> >
>> > Angel HB9SLV
>> >
>> >
>> > _______________________________________________
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>> > Amps@contesting.com
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>>
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