[1000mp] Mark V

[J. C. Mc Laughlin]

Dear Mike W2AJI:   It sure seems as if it is time to do some signal tracing. 
Hard to believe that the previous owner (characterized as a rag-chewer) 
would have made any internal modifications.

Tuner appears to work as expected on transmit.

My longtime friend and colleague (he was once my student and now we are both 
retired professors) has taken a trip to Sweden.  I will consolidate the 
suggestions that have been received.  One of the things I will suggest is to 
take the radio to our lab and use a spectrum analyzer to detect any spurious 
oscillations.  I have used that technique before to check LO frequencies.

It would have been silly to want the tuner in line on receiving - now that I 
think about it - as the sensitivity is far more than enough on HF.

Thanks again.   73,    Mac   N8TT

J. McLaughlin;  Michigan, USA
Home:  JCM at power-net.net
----- Original Message ----- 
From: "Mike Schatzberg" <cherokeehillfarm at earthlink.net>
To: "J. C. Mc Laughlin" <jcm at power-net.net>
Sent: Monday, May 31, 2010 9:23 AM
Subject: Re: [1000mp] Mark V


>I would open the radio and check for some modification which may have been 
>made to the tuner signal path switching.  Someone may have tried to add the 
>tuner into the receive path as an improvement in the design.
>
> I assume the tuner is working as it should on transmit?  It is switching 
> and tuning?
>
> Mike
> ----- Original Message ----- 
> From: "J. C. Mc Laughlin" <jcm at power-net.net>
> To: "Mike Schatzberg" <cherokeehillfarm at earthlink.net>; "All about Yaesu 
> 1000mp" <1000mp at mailman.qth.net>
> Sent: Monday, May 31, 2010 9:00 AM
> Subject: Re: [1000mp] Mark V
>
>
>> Dear Mike W2AJI:    Yes.    Not tried:  the receive port as it is desired 
>> to transmit and receive on the same antenna and a reasonable receive-only 
>> antenna does not (can not) exist.
>>
>> Also tried:  FT1000 MkV was connected directly to the antenna.  The 
>> antenna is a 40 foot (approximately) vertical with radials within 
>> something like 100 feet of a fresh-water lake.  With previous rig (the 
>> little Yaesu) a SG-230 at the base of the antenna was used.
>>
>> Thanks for your continuing assistance.  73,  Mac  N8TT
>>
>> P.S.:  Who is cherokeehillfarm at earthlink.net  who wants one to register 
>> with him before he will respond?
>>
>> J. McLaughlin;  Michigan, USA
>> Home:  JCM at power-net.net
>> ----- Original Message ----- 
>> From: "Mike Schatzberg" <cherokeehillfarm at earthlink.net>
>> To: "J. C. Mc Laughlin" <jcm at power-net.net>; "All about Yaesu 1000mp" 
>> <1000mp at mailman.qth.net>
>> Sent: Monday, May 31, 2010 8:47 AM
>> Subject: RE: [1000mp] Mark V
>>
>>
>> If you change the antenna port from A to B do you still get the problem?
>>
>> 73,
>> Mike
>> W2AJI
>>
>> -----Original Message-----
>> From: J. C. Mc Laughlin <jcm at power-net.net>
>> Sent: Monday, May 31, 2010 8:37 AM
>> To: Barry Mitchell <bmitch1 at optusnet.net.au>
>> Cc: 1000MP Dec2001 <1000mp at mailman.qth.net>
>> Subject: Re: [1000mp] Mark V
>>
>> Dear Barry VK6WF:
>>
>>    Thanks for the hint.  I will double check, but I think that each of
>> those settings (flat vs. tuned) were tried.  I use "tuned" on my FT1000 
>> MkV
>