[1000mp] RX ANT

[Milt, N5IA]

All

At our operation locations for the various 160 Meter contests, we run two 
and sometimes three MP's simultaneously.  We will always have the RUN/CQ 
transmitter going while the other one/two MP's are in the HUNT/receiving 
mode and likewise the RUN/CQ transmitter will be listening while either of 
the HUNT transmitters is transmitting.

In all cases we use multiple Beverages feeding the separate RX jack on the 
rear of the MP's.  Throughout many years and dozens of contests there NEVER 
has been any problem with overload of, OR damage to, the MP receivers.

YMMV, and good luck.  CU all in the CQ 160 SSB tonight and tomorrow night 
from N7GP, Greenlee County and DM52, in Arizona.

Milt, N5IA, one of the ops at N7GP and NA5NM, variously.


----- Original Message ----- 
From: "Yuri" <ve3dz at rac.ca>
To: "All about Yaesu 1000mp" <1000mp at mailman.qth.net>
Sent: Friday, February 24, 2006 6:17 AM
Subject: Re: [1000mp] RX ANT


> That's what I'm saying.
> According to the diagram the RX ANT jack is being grounded when
> transmitting.
> I used my MP with full legal power AMP both in the CQ WW 160 and in the 
> ARRL
> DX having 1000' beverage connected to RX ANT jack at all times and nothing
> happened...
> 73, Yuri  VE3DZ
>
>
> ----- Original Message ----- 
> From: "Pitman, Zoltan, VF-NL" <zoltan.pitman at vodafone.com>
> To: "All about Yaesu 1000mp" <1000mp at mailman.qth.net>
> Sent: Friday, February 24, 2006 8:11 AM
> Subject: RE: [1000mp] RX ANT
>
>
> Read the schematics and it can be easily seen that it is absolutely
> unnecessary for the FT1000MP-series as the radio takes care of it inside.
>
> There are always some people here who jump on this hype and spam us with
> some marketing for this box.
>
> Zoli HA1AG
>
>
>> -----Original Message-----
>> From: 1000mp-bounces at mailman.qth.net
>> [mailto:1000mp-bounces at mailman.qth.net] On Behalf Of George (K8GG) & 
>> Marijke Guerin
>> Sent: Friday, February 24, 2006 14:03 PM
>> To: Yuri; All about Yaesu 1000mp
>> Subject: Re: [1000mp] RX ANT
>>
>>
>> Yuri, et. al.,
>>
>> Theoretically the RX Antenna jack is disconnected when
>> transmitting, but
>> some FT1000D and FT1000MP transceivers, etc., and some Icoms
>> do get RF
>> feedback from their RX antennas and have blown out part of
>> the front end of the receiver section.
>>
>> It is best to get a Front End Saver - FES - either build one
>> or go to Gary, KD9SV or via Craig at the Ham Radio Bookstore.
>>
>> 73        George    K8GG
>>
>>
>> >
>> > Tod, KØTO wrote:
>> >
>> > If you do choose to have a separate RX antenna be
>> > absolutely certain to
>> > provide RF voltage protection for the RX in line so that you do not
>> > damage the front end of the FT1000X. The best system is to
>> > ground it when transmitting. Many past reflector messages have
>> > commented on this  and provided information.
>> >
>> > Hi Tod,
>> > Doesn't RX jack get grounded inside the radio while transmitting?
>> >
>> > Thanks.
>> > Yuri  VE3DZ
> ______________________________________________________________