[Yaesu] A FT-1000MP warning

[Rob Atkinson]

A few rigs have a jack on the back panel that is for a separate rx.   
That way you can run a separate rx off of the antenna the transceiver 
is on but the take-off to the jack is between the rig's front end and 
its txrx relay so the second rx is protected on tx.  It's a feature I 
wish all rigs had but maybe it isn't too hard to add.  find a tap point 
in the signal path between the ant. relay and the front end, drill a 
hole in the back panel and install the jack of your choice and run a 
short length of micro coax.

Don't confuse a jack for a second rx antenna (such as a beverage) with 
this.  That's a fairly common feature now on the newer high-end rigs.  
One I know of, the Ten Tec Corsair II, had a jack that did both with a 
switch.

rob / k5uj

On Monday, July 9, 2007, at 05:46  PM, Artmouton wrote:

> Yeah - I used a double pole knife switch between my Johnson Challenger 
> and S-107 (later replaced by an HT-37 and HQ-145).  No telling the SWR 
> on that thing but I did work quite a few states.
> I finally got a TR switch saving my money from working at Stop & Shop 
> for .90 cents an hour.
> Art K5FNQ
>
> ----- Original Message ----- From: "Jerry Flanders" 
> <jeflanders at comcast.net>
> To: "mikea" <mikea at mikea.ath.cx>
> Cc: <yaesu at mailman.qth.net>
> Sent: Monday, July 09, 2007 9:38 AM
> Subject: Re: [Yaesu] A FT-1000MP warning
>
>
>> At 09:43 AM 7/9/2007, you wrote:
>>
>>> I've got an RFSpace SDR-IQ, and it's a nifty little receiver.
>>> >SNIP>
>>> Downside: if the SDR RX is sharing the feedline with your 
>>> transceiver,
>>> then you *MUST* provide a way to disconnect it before you transmit, 
>>> or
>>> else you'll get to send it in for a new front end. I'm looking at
>>> using a coax relay, with a PTT button, key, keyer, or bug to control
>>> the relay, and using a pair of auxiliary contacts on the relay to
>>> actually key up the TX.
>>>
>>> --
>>> Mike Andrews, W5EGO
>>
>> Prior to the "invention" of the transceiver in the '60's, we all used 
>> separate receivers and transmitters. Handbooks of the 50's-60's would 
>> cover the problems of the interconnects, if you can find one. It was 
>> pretty easy unless you wanted full QSK.
>>
>> Jerry W4UK