[RFI] Which filter to use?

[Jim Brown]

On 4/4/2011 10:46 AM, doc at kd4e.com wrote:
> This is a commercial Harris amp, built for CH2, which is being
> converted to HF using transformers and splitter-combiners from
> Communications Concepts.

Doc, what you're trying is a serious engineering project, and requires 
serious RF engineering background, custom-built filters for each band, 
and serious test equipment to tune those filters. I suspect that there 
will be other major issues as well.  This is NOT a plug and play 
conversion. I don't mean to be insulting, but this sounds like it's way 
over your head. I'm an experienced EE, and there are many projects I 
would take on before this one. One of my good friends here in CA, a VERY 
experienced EE with very good HP test gear, took on a project to build 
his own bandpass filters. In bar conversation, he told me it was FAR 
more work than he had expected. And I wasn't surprised.

73, Jim K9YC