[Amps] DIN vs N

[Carl]

----- Original Message ----- 
From: "Jim Thomson" <jim.thom at telus.net>
To: <amps at contesting.com>
Sent: Monday, April 25, 2011 9:45 PM
Subject: [Amps] DIN vs N


> Date: Mon, 25 Apr 2011 16:57:44 +0200
> From: "DF3KV" <df3kv at t-online.de>
> Subject: Re: [Amps] DIN vs N
> To: <amps at contesting.com>
> Message-ID: <5CA20D7C804D494E8304E51B8F4E563D at shack>
> Content-Type: text/plain; charset="us-ascii"
>
> Those 10-15W are per channel, not per connector.
> Cell phone sites run multiple transmitters into the same antenna.
> That is also the reason why IMD by connectors and cables needs to be as 
> low
> as possible.
>
> 73
> Peter
>
> ###  The cell tech I talked to at work....back in 2005  told me it was 100 
> mw  PER  channel.
> Only ONE TX, that fed 3-4 x ants.  Now that was before the G3+  upgrade. 
> The telco I worked for,
> used Type N  on everything.  99%  of the  cell sites back then used either 
> 7/8"  heliax....or  1.25" heliax.


My 903 amp is a 100W SS cell module. As many as were needed were in a rack. 
I dont know if they were all combined or just a few per array.
Mine runs cool and linear at 150W using an old heatsink I had kicking 
around.

The old cell amps used tubes such as the 3CX400U7 in a series of frequency 
stepped Eimac cavities at around 250-300W out. One works on 903 without mods 
and Id used it for almost 20 years (Motorola name plate) but a couple of the 
SS modules and combiners is so much easier to get some real power.

Carl
KM1H