[1000mp] FT1000MP Rec terminal

[Dan Z]

It is not a problem unless you are working SO2R or Multi and have the FT1000MP in Receive mode while another rig is transmitting.  The relay at the input of the MP's RF board de-energizes and opens the connection to the RX Ant input during transmit if the RX Ant is in use.That was not the case in the FT1000/1000D as people found out the hard way.
To reiterate; Operating the MP with a separate receive antenna where the MP is the only active transmitting device in the area antenna is not a problem.  The RX Ant is disconnected during transmit.
 Dan Zeitlin - K2YWE South Shore ARC - K3AU Annapolis, Maryland http://danzee.org 

    On Friday, March 17, 2017 3:56 PM, "Augie "Gus" Hansen" <augie.hansen at comcast.net> wrote:
 

 Hi Jos,

> hey Ted .......my name is jos  ON4ATK  ...and I'm using also a ft1000mp .
> I use a  beverage on receive sometimes,but am concerned about the 
> front end.
> I can't find any reliable shematic  on the web.
> any idea  of what I can build on my own to protect the front end.
> kind regards

I did a search for "RX front-end saver circuit" and it turned up many 
useful articles, some with schematic diagrams and parts lists, for good 
RX protection circuits.

I have used the commercial KD9SV Front-end Saver for many years with 
excellent results. It provides the additional function of buffering the 
amp keying circuit to protect the rig from damage by amps that have high 
voltage or current keying requirements. There is a homebrew version of 
the KD9SV here:

    http://www.qsl.net/wy3a/Front-End-Saver.htm

You need only build the part you need, so you could leave off the amp 
keying circuit part if your amp is of modern design (low voltage/current 
keying).

Good luck with your project,

Gus Hansen
KB0YH

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