[Boatanchors] VHF linear amp?

[Bill Abate]

Ron,

I home brewed a pair of 4CX250's for 6M years ago.  It has vacuum 
variable for the output.  It is cathode driven to work with 100 watt 
exciters.  Not hard to do.  If you want a short cut, its for sale.  I 
don't need it any more as I have a 4-1000.


GL,


Bill, K3PGB

On 5/27/2020 9:02 PM, Ron VE8RT wrote:
> Hi Gary,
>
>     I've been putting in 10 hour days, actually overdoing it to the
> point that its messing up my health, I'm so looking forward to retiring
> and would put this on a project to do list.  While I'm working I'm
> collecting a few things for projects like this.  Homebuilding one
> appeals to me, I think I still have the tools and skills to do a
> reasonable job of it.
>
>     Current work project is doing some avionics refitting on a nearly
> fifty year old CL215 water bomber which is going on contract this
> year.  Its been dry and the expectation is that forest fire activity
> will higher than typical years.
>
>     Ron VE8RT
>
> On Wed, 27 May 2020 11:45:52 -0600
> "Gary Peterson" <kzerocx at rap.midco.net> wrote:
>
>> Ron,
>>
>> The Johnson Viking 6 & 2 Thunderbolt used 4CX250Bs.  These are fairly scarce amplifiers.  I owned one, briefly.  A friend pestered me, incessantly, until I sold it to him.
>>
>> There may have been other commercially made 4CX250B amps for amateur use.  I just can’t think of any.  I have plenty of FM broadcast pulls, sockets, chimneys, etc.  I used to replace the driver tubes, annually, even if they were still providing full drive to the PA.  You could always hombrew an amp.
>>
>> Gary
>> KzeroCX
>>
>> I've had a long desire to QRO a bit on
>> VHF 6, 2, or even UHF 70cm, and was wondering what type of boatanchor
>> amplifiers that use these tubes I might find? Ron VE8RT
>> ______________________________________________________________
>> Boatanchors mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/boatanchors
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Boatanchors at mailman.qth.net
>>
>> List Administrator: Gary Harmon, K5JWK
>> ** For Assistance: gharmon at idworld.net **
>>
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to ve8rt at yknwt.ca