[MAMS] tubes for the 6155 Re:Back On 222mhz with Amp

[MARK K8MD]

No 8930's. Use a 4CX400a Russian  tube nothttp://ve2zaz.net/AM6155/AM6155.htm 4CX250....THe 4CX400 will give you at 400W See VE2ZAZ write on proper bias supply.
http://ve2zaz.net/AM6155/AM6155.htm. Now you'll have to find writes of what changes to do to amp on the INTERNET if you have not already done that. I run one on 222 and 432mhz mark, K8MD 

--- On Mon, 12/31/12, aa9il at sbcglobal.net <aa9il at sbcglobal.net> wrote:

From: aa9il at sbcglobal.net <aa9il at sbcglobal.net>
Subject: [MAMS] tubes for the 6155 Re:Back On 222mhz with Amp
To: mams at mailman.qth.net, "mw" <microwave at lists.valinet.com>
Date: Monday, December 31, 2012, 2:06 PM

Hello All
While on the topic off the 6155, is there a source for the 8930?
I have heard that a 4CX250 will work provided there is something
to shim it in the socket.  A long time ago, I heard of a machined
adapter for the tube.  I have an amp Im going to put
on 2m that has the original tube and I would like to get a spare
or go the 4cx250 route if need be.
73 de Mike
AA9IL


--- On Mon, 12/31/12, MARK K8MD <k8md at sbcglobal.net> wrote:

> From: MARK K8MD <k8md at sbcglobal.net>
> Subject: Re: [MAMS] Back On 222mhz with Amp
> To: "Mid-America Microwave Society" <mams at mailman.qth.net>
> Date: Monday, December 31, 2012, 11:52 AM
> Dave I bought one fan from Fair Radio
> and I'm not sure if it will work, If you make the pass thru
> here for June contest(I don't think you rover January
> contest) I'll show you the fan.
> 
> --- On Mon, 12/31/12, David DeVos <kf8ql at yahoo.com>
> wrote:
> 
> From: David DeVos <kf8ql at yahoo.com>
> Subject: Re: [MAMS] Back On 222mhz with Amp
> To: "Mid-America Microwave Society" <mams at mailman.qth.net>
> Date: Monday, December 31, 2012, 11:26 AM
> 
> Glad to hear you got it fixed Mark.  I'd love to get a new
> fan, but I went to 
> the Fair Radio site and did not see them listed.  I did buy
> a new set of bearing 
> for the fan from a Canadian fellow on the web, and I will
> swap those out and see 
> if that quiets my 2m amp blower.  
> 
> 
> Happy New Year from KF8QL in EN72fu!
>  Dave
> http://www.davedevos.com 
> 
> 
> 
> ----- Original Message ----
> From: MARK K8MD <k8md at sbcglobal.net>
> To: mams at mailman.qth.net;
> mw <microwave at lists.valinet.com>
> Sent: Sun, December 30, 2012 5:39:17 PM
> Subject: [MAMS] Back On 222mhz with Amp
> 
> I purchased an AM 6155 to fix my AMP. It was not modified so
> for last couple 
> days I exchanged modules and proceeded to do Modes to
> Different sections and 
> exchanged them with what I had. Took 8930 that came with
> purchased amp and I'm 
> seeing 450W most I've seen on band. I'm also operating off
> of 220VAC which why I 
> wrecked the AMP. 
> 
> 
> I purchased a Bias module and fan from Fair Radio but they
> don't look the same. 
> I'm thinking that a newer bias circuit was made and
> manufacture added a small 
> board on top of the one I modified. The blower had a board
> attached to it close 
> to the square cage blower. I didn't use them but they maybe
> good for parts. 73 , 
> See in contest Mark, K8MD  
> 
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