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[Amps] Fabrication & part placement

To: amps@contesting.com, amps@contesting.com
Subject: [Amps] Fabrication & part placement
From: kg7hf@comcast.net
Date: Thu, 17 Apr 2008 17:36:30 +0000
List-post: <amps@contesting.com">mailto:amps@contesting.com>
At the risk of being laughed off the reflector, I?m going to ask a naive 
question.    Are there any rules or rule of thumb regarding spacing (with 
respect to electricity and less so cooling) between parts/cabinet?   For 
example what would be a good minimum distance between the inside cover and the 
top of a 3cx800a?  How much space should be allowed between the socket pins and 
the bottom of the cabinet?
Thanks,
Paul, kg7hf


-------------- Original message -------------- 
From: amps-request@contesting.com 

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> Today's Topics: 
> 
> 1. Re: 3 1/8 to 7/16 ? (Jan Erik Holm) 
> 2. Re: 3 1/8 to 7/16 ? (Jan Erik Holm) 
> 3. Re: 3CX3000A7 input impedance (Jan Erik Holm) 
> 4. Re: 3 1/8 to 7/16 ? (Jan Erik Holm) 
> 5. Re: 3CX3000A7 input impedance (jeremy-ca) 
> 
> 
> ---------------------------------------------------------------------- 
> 
> Message: 1 
> Date: Thu, 17 Apr 2008 08:24:32 +0200 
> From: Jan Erik Holm 
> Subject: Re: [Amps] 3 1/8 to 7/16 ? 
> Cc: 'Amp Reflector' 
> Message-ID: <4806ED20.8090203@telia.com> 
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed 
> 
> And what was it? I never saw a reply. 
> 
> Too bad people can?t post to the list so others 
> can learn also, oh well that?s life.............. 
> 
> /SM2EKM 
> ----------------- 
> Andy GD0TEP wrote: 
> > Thanks to everyone that responded to my enquiry, I now have a suitable 
> > adaptor on the way from America. 
> > 
> > 73 
> > Andy 
> > http://gd0tep.com 
> > 
> 
> 
> 
> ------------------------------ 
> 
> Message: 2 
> Date: Thu, 17 Apr 2008 08:28:52 +0200 
> From: Jan Erik Holm 
> Subject: Re: [Amps] 3 1/8 to 7/16 ? 
> Cc: 'Amp Reflector' 
> Message-ID: <4806EE24.9030300@telia.com> 
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed 
> 
> Yes I looked myself in my Spinner, RFS, Shuner and Andrews 
> catalogs but there was nothing. 
> 
> Andrews had a 3 1/8 to N but of course that wasn?t it. 
> 
> Anyway case looks to be solved and thats good. 
> 
> / SM2EKM 
> ------------------ 
> Karl-Arne Markstr?m wrote: 
> > Years ago, I came across exactly this type of adapter at work. 
> > It was manufactured by Spinner GmbH in Germany. 
> > 
> > Unfortunately, I cannot remember the item number, 
> > and the current Spinner on-line catalog does not list this adapter. 
> > 
> > Maybe German readers of the Amps reflector can point in the right 
> > directions 
> > 
> > 73/ 
> > 
> > Karl-Arne 
> > SM0AOM 
> > 
> 
> 
> 
> ------------------------------ 
> 
> Message: 3 
> Date: Thu, 17 Apr 2008 08:39:57 +0200 
> From: Jan Erik Holm 
> Subject: Re: [Amps] 3CX3000A7 input impedance 
> Cc: 'AMPS' 
> Message-ID: <4806F0BD.5050507@telia.com> 
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed 
> 
> Yes. You can look here too: 
> www.g8wrb.org/data/Svetlana/pdf/3CX3000A7.pdf 
> 
> 73 SM2EKM 
> -------------------- 
> Phil Clements wrote: 
> > Subject: [Amps] 3CX3000A7 input impedance 
> > 
> > A friend of mine is building up a 3CX3000A7 amp and asked me what the input 
> > impedance is. Seems that I used 50 ohms when I built mine but I'm not sure. 
> > 
> > The Eimac tech sheet says a 3x3 running in AB2 cathode driven will have an 
> > input impedance of 50 ohms. Can anyone verify that for me? 
> > 
> > Thanks, 
> > Bob W6TR 
> > 
> > I can verify that, Bob. I am running a 3X3 on 160 meters here, and I 
> > designed the input Pi-Net for 50 ohms in and out, with a Q of about 3-5, or 
> > so. The VSWR is 1:1 across the band. 
> > 
> > 
> > ((((73)))) 
> > Phil, K5PC 
> > 
> > 
> > 
> , 
> 
> 
> 
> ------------------------------ 
> 
> Message: 4 
> Date: Thu, 17 Apr 2008 08:57:35 +0200 
> From: Jan Erik Holm 
> Subject: Re: [Amps] 3 1/8 to 7/16 ? 
> To: 'Amp Reflector' 
> Message-ID: <4806F4DF.8060500@telia.com> 
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed 
> 
> I know now. Just saw the info by GD0TEP, TNX! 
> 
> /SM2EKM 
> --------------- 
> Jan Erik Holm wrote: 
> > And what was it? I never saw a reply. 
> > 
> > Too bad people can?t post to the list so others 
> > can learn also, oh well that?s life.............. 
> > 
> > /SM2EKM 
> > ----------------- 
> > Andy GD0TEP wrote: 
> >> Thanks to everyone that responded to my enquiry, I now have a suitable 
> >> adaptor on the way from America. 
> >> 
> >> 73 
> >> Andy 
> >> http://gd0tep.com 
> 
> 
> 
> ------------------------------ 
> 
> Message: 5 
> Date: Thu, 17 Apr 2008 09:26:15 -0400 
> From: "jeremy-ca" 
> Subject: Re: [Amps] 3CX3000A7 input impedance 
> To: "Jan Erik Holm" 
> Cc: 'AMPS' 
> Message-ID: <006601c8a08e$9ee35d40$6500a8c0@KITTYMA123> 
> Content-Type: text/plain; format=flowed; charset="iso-8859-1"; 
> reply-type=original 
> 
> 
> ----- Original Message ----- 
> From: "Jan Erik Holm" 
> Cc: "'AMPS'" 
> Sent: Thursday, April 17, 2008 2:39 AM 
> Subject: Re: [Amps] 3CX3000A7 input impedance 
> 
> 
> > Yes. You can look here too: 
> > www.g8wrb.org/data/Svetlana/pdf/3CX3000A7.pdf 
> > 
> > 73 SM2EKM 
> 
> 
> My Zone Alarm firewall program says that site is asking for a stored 
> password. Id be careful about a phisher having hacked into it. 
> 
> Carl 
> KM1H 
> 
> 
> 
> ------------------------------ 
> 
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> 
> End of Amps Digest, Vol 64, Issue 31 
> ************************************ 
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