[Amps] 572B - News?

[Marcelo Cabral]

Hi, Glen! 

Thanks for the stimulus and idea, I see there your nice amp, greatly built. 

73 QRO, 

Marcelo – PY1KR 

 

 

From: Glen Zook [mailto:gzook at yahoo.com] 
Sent: sexta-feira, 7 de novembro de 2014 14:04
To: Marcelo Cabral; amps at contesting.com
Subject: Re: [Amps] 572B - News?

 

It is easy to home brew a socket for the Gi-7bT tubes.  There are some photographs of how I made sockets for a pair of those tubes that I used for my 160-meter amplifier at the following URL:

 

http://nebula.wsimg.com/64c93cac786e7174968c0855eca0b53e?AccessKeyId=5DDC3F25F0398F58962E <http://nebula.wsimg.com/64c93cac786e7174968c0855eca0b53e?AccessKeyId=5DDC3F25F0398F58962E&disposition=0&alloworigin=1> &disposition=0&alloworigin=1



 

Glen, K9STH 

Website: http://k9sth.net

 


-----Original Message-----
From: Gustavo V [mailto:lu6avm at gmail.com] 
Sent: sexta-feira, 7 de novembro de 2014 13:06
To: Marcelo Cabral
Subject: Re: [Amps] 572B - News?

Hola Marcelo.

you can modified your amp to use 2x Gi7BT russian tubes, just buy from http://UR4LL.net  <http://ur4ll.net/> Dr Alex is a nice person and sell original SOVIET tubes :)

I'm building one right now and I got several matched tubes (same lote)

your modifications will be really few, your HV PS give you the correct voltage (2400V) that are ok for Gi7Bt, maybe have to modified/change the filament one...