[Yaesu] FT1000D Intermittant receiver

[John Barber GW4SKA]

Jim,

It happens on 40 and 80 but not so far apparent on 20 or 15. Switching 
bandwidth has no effect when in the fault condition.

I shall get it apart and look for any intermittent connectors, hopefully 
this weekend. I've rarely had a reed relay give problems, then always open 
or closed, so will ignore that path for now.

Thanks,

John GW4SKA


----- Original Message ----- 
From: "James Colville" <jimw7ry at gmail.com>
To: <yaesu at contesting.com>
Sent: Thursday, February 18, 2010 10:16 PM
Subject: Re: [Yaesu] FT1000D Intermittant receiver


>
> Does it occur on all bands? Or just one?
>
> You may also want to check the antenna tuner bypass relay.
>
> 73
> Jim W7RY
>
>
>
> On Thu, Feb 18, 2010 at 12:55 PM, Dave Maley <dgmaley at commspeed.net> 
> wrote:
>
>> John;
>>
>> There is an extremely small reed relay, I believe, on the lo-pass filter
>> board.  The transmitter gets switched by a pin diode.  Rarely do I hear 
>> of
>> them going bad by getting intermittant.  They tend to stick closed, then
>> burn up the front-end next time you transmitt.  I suppose it could.  Try
>> switching bandwidth and see if a filter socket is bad first.  Good
>> hunting.
>> Dave
>> WA0ZZG
>>
>>
>>
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>> >    1. FT1000D (John Barber GW4SKA)
>> >    2. Re: FT1000D (James Colville)
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>> > ----------------------------------------------------------------------
>> >
>> > Message: 1
>> > Date: Thu, 18 Feb 2010 14:59:47 -0000
>> > From: "John Barber GW4SKA" <ska at bartg.org.uk>
>> > Subject: [Yaesu] FT1000D
>> > To: <yaesu at contesting.com>
>> > Message-ID: <5B2F656426F44DCA9D179A16D45CFC0E at Shack>
>> > Content-Type: text/plain; format=flowed; charset="iso-8859-1";
>> >       reply-type=original
>> >
>> > One of my FT1000Ds has an intermittent receive fault. The gain drops by
>> > 60db
>> > or more when dekeyed. It will come back to full gain maybe after the 
>> > next
>> > TX/RX or maybe not for some time.
>> >
>> > Relay contacts? Any guidance would be appreciated.
>> >
>> > Thanks,
>> >
>> > John GW4SKA
>> >
>> >
>> >
>> >
>> >
>> > ------------------------------
>> >
>> > Message: 2
>> > Date: Thu, 18 Feb 2010 07:32:20 -0800
>> > From: James Colville <jimw7ry at gmail.com>
>> > Subject: Re: [Yaesu] FT1000D
>> > To: John Barber GW4SKA <ska at bartg.org.uk>
>> > Cc: yaesu at contesting.com
>> > Message-ID:
>> >       <f04018a61002180732t6105cce1w3af1f50703e1ab99 at mail.gmail.com>
>> > Content-Type: text/plain; charset=ISO-8859-1
>> >
>> > The FT-1000 uses a reed relay for T/R switching.
>> >
>> > 73
>> > Jim W7RY
>> >
>> >
>> >
>> >
>> > On Thu, Feb 18, 2010 at 6:59 AM, John Barber GW4SKA
>> > <ska at bartg.org.uk>wrote:
>> >
>> >> One of my FT1000Ds has an intermittent receive fault. The gain drops 
>> >> by
>> >> 60db
>> >> or more when dekeyed. It will come back to full gain maybe after the
>> >> next
>> >> TX/RX or maybe not for some time.
>> >>
>> >> Relay contacts? Any guidance would be appreciated.
>> >>
>> >> Thanks,
>> >>
>> >> John GW4SKA
>> >>
>> >>
>> >>
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>> > End of Yaesu Digest, Vol 86, Issue 9
>> > ************************************
>> >
>>
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