[Amps] Another interesting tube

[Carl]

There is nothing wrong with a lot of old tech tubes.

I have several old fashioned 7213's and a couple of the 7214 pulse version 
and always wanted to build something around them.
For now they are just spares for military cavities retuned to 222 and 432 .

Many moons ago in the mid 60's I used 6161's that were given to me NIB when 
a CH 56 transmitter was scrapped, I was the tower ape at that site doing on 
call moonlighting when needed as I lived about 5 miles away. Thats when I 
was taught about cavity and flat plate designs and had them as high as 1296 
with decent efficiency considering the frequency

Carl
KM1H



----- Original Message ----- 
From: "Bill, W6WRT" <dezrat1242 at yahoo.com>
To: "AMPS" <amps at contesting.com>
Sent: Monday, July 30, 2012 9:16 PM
Subject: Re: [Amps] Another interesting tube


> ORIGINAL MESSAGE:
> On Mon, 30 Jul 2012 20:55:19 -0400, you wrote:
>
>>Glass instead of ceramic and only a 150C seal limit means lots of air when
>>trying for 1500W.
>>That really is an ancient technology tube and is only good to 6M.
>
> REPLY:
> All true, but the tube is so cute!    :-)
>
> Seriously though, I would run two in parallel if going for 1500 watts. And 
> lots
> of air.
>
> And spend the money I saved on antennas.
>
> 73, Bill W6WRT
> _______________________________________________
> Amps mailing list
> Amps at contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>
>
> -----
> No virus found in this message.
> Checked by AVG - www.avg.com
> Version: 10.0.1424 / Virus Database: 2437/5166 - Release Date: 07/30/12
>