[TenTec] RF Speech Processor "TX IMD"

[Jim Brown]

On 6/18/2013 1:07 PM, Rick - DJ0IP / NJ0IP wrote:
> The current cost of a set of BPF's for the
> classical ham bands (but not the WARC bands) is $800 - more than some of
> these transceivers cost.

I'm late to reading this thread, so please excuse the late comments.  
The best deal on high quality bandpass filters for use at the 100-200W 
level is 5B4AGN's TXBPF group purchase kit, based on the W3NQN designs 
published in QST in the 90s.  It comes in at about $400 per set of six 
filters, including band decoders and relay drivers for an external 
antenna switch, and in a nice enclosure. For decent factory-built 
filters you've got to go to Array Solutions for the W3NQN units and 
switchbox.  They're now also selling a modular box.

> I maintain the OEMs could fix the cause of the
> problem for a lot less than $800.

Yes, certainly at the <200W power level.

73, Jim K9YC.