Topband: high power filters

[Jeff Maass]

> -----Original Message-----
> From: topband-bounces at contesting.com
> [mailto:topband-bounces at contesting.com]On Behalf Of Dick and Adele
> Bingham
> Sent: Tuesday, February 28, 2006 12:39 PM
> To: topband at contesting.com
> Subject: Topband: high power filters
> 
> 
> Greetings everyone
> 
> See my comments below ==>
> .........................................................
> Message: 4
> Date: Tue, 28 Feb 2006 06:01:24 -0500
> From: "Tom Rauch" <w8ji at contesting.com>
> Subject: Re: Topband: high power filters
> To: "Dick" <knaap159 at zonnet.nl>, <topband at contesting.com>
> 
> > I want something that I can use behind a 160m MOSFET
> > amplifier, which haven't much filtering in the output.
> > The amp has to be runned in a multi-multi station.......
> 
> BIG SNIP
> 
> The only good solution is to build a simple multiple section
> low pass filter using transmitting components. Don't try to
> 
> ANOTHER BIG SNIP
> 
> 73 Tom
> ......................................................
> Tom and others have provided many good suggestions. 
> 
> You might also check some of the construction techniques 
> provided in a _Microwaves & RF_  magazine article titled 
> "Designing High-Power Series Inductors And Shunt Capacitors" 
> published October 1987 pp 97-98,  101, 103, 105 and 107.
> 

You might also consider the commercial solution offered
by W3NQN and sold by WX0B at Array Solutions. 

>58 db rejection 3.4 to 10 MHz, <0.5 db insertion loss,
rated 2 kW. Not cheap ($520), but available off-the-shelf.
http://arraysolutions.com/Products/wx0bbpf6.htm#2%20kW


73,  Jeff  K8ND