[Kenwood] Kenwood Digest, Vol 98, Issue 7

Sat Jun 16 14:07:14 EDT 2012

Hi: On e-ham they rate my Icom IC-471 one of ther best.
                Jerry w0sat
 

> From: kenwood-request at mailman.qth.net
> Subject: Kenwood Digest, Vol 98, Issue 7
> To: kenwood at mailman.qth.net
> Date: Sat, 16 Jun 2012 12:04:18 -0400
> 
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> Today's Topics:
> 
> 1. Re: Most rugged HF transceiver (Bill Cromwell)
> 2. TS-430S USB/LSB receive stopped working (Ian Wilson)
> 3. Re: Most rugged HF transceiver (Dr. David Kirkby)
> 4. Re: TS-430S USB/LSB receive stopped working (Dan Violette)
> 
> 
> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Fri, 15 Jun 2012 14:37:05 -0400
> From: Bill Cromwell <wrcromwell at gmail.com>
> Subject: Re: [Kenwood] Most rugged HF transceiver
> To: kenwood at mailman.qth.net
> Message-ID: <1339785425.2601.18.camel at lancelot>
> Content-Type: text/plain; charset="UTF-8"
> 
> John asked about:
> 
> I am interested in what people would consider the most rugged Kenwood HF
> or
> HF/VHF transceivers (new or used). By rugged I mean able to withstand
> the
> most abuse (environmental, not operator induced). This would include
> being
> slapped at times, hit with thrown object, and everything else that might
> occur in a chaotic enviroment. So, which rigs would withstand this
> environment with the least chance of being damaged? A low price point
> would also be good in case it was damaged, one would not be out a lot of
> money.
> 
> John AF5CC
> 
> *******************
> 
> Hi John,
> 
> In my opinion those would be any of the hybrid radios. I have a set of
> the original twins - T599 and R599. The hybrids include the 520, 830,
> and several other models. Ken has good information about those here:
> 
> http://www.k4eaa.com/
> 
> I have seen that some of those that use PLL synthesizers have problems
> that can be more difficult to repair. All of them have tube final and
> tuber driver stages in them. Except for those that have PLL synthesizers
> they have discrete components that can be replaced by people with
> ordinary ham radio skills. Even those gave been repaired by hams. When I
> got my twins the transmitter had been butchered by some previous owner
> but I had no trouble getting it back in service in a matter of hours!
> 
> It has been exposed to Field Day operations - that should tell you
> something.
> 
> Good luck with your search
> 
> 73,
> 
> Bill KU8H
> 
> 
> 
> ------------------------------
> 
> Message: 2
> Date: Fri, 15 Jun 2012 11:41:48 -0700
> From: Ian Wilson <ianmwilson73 at gmail.com>
> Subject: [Kenwood] TS-430S USB/LSB receive stopped working
> To: kenwood at mailman.qth.net
> Message-ID:
> <CAEz8jcSygTWZa4jTx+O6--f9N904uY-FwyHa2-C-eog+HZByAQ at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
> 
> I have had a TS-430S for some time. It is used almost 100% on CW.
> Recently I discovered that receive on USB/LSB is 9 S-units down from
> the sensitivity on CW. This must have happened some time since last
> Field Day.
> 
> I am aware of the fix for poor relay contacts. However, I don't see any
> relays in the schematic that would seem to be related to SSB selection.
> 
> The next step would be to measure the control voltage on the PIN diodes
> that do the filter selection, I suppose.
> 
> Anyone encountered this problem before?
> 
> 73, ian K3IMW
> 
> 
> ------------------------------
> 
> Message: 3
> Date: Sat, 16 Jun 2012 00:12:18 +0100
> From: "Dr. David Kirkby" <david.kirkby at onetel.net>
> Subject: Re: [Kenwood] Most rugged HF transceiver
> To: kenwood at mailman.qth.net
> Message-ID: <4FDBC152.8060806 at onetel.net>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
> 
> On 06/14/12 08:22 PM, John wrote:
> > I am interested in what people would consider the most rugged Kenwood HF or
> > HF/VHF transceivers (new or used). By rugged I mean able to withstand the
> > most abuse (environmental, not operator induced). This would include being
> > slapped at times, hit with thrown object, and everything else that might
> > occur in a chaotic enviroment. So, which rigs would withstand this
> > environment with the least chance of being damaged? A low price point
> > would also be good in case it was damaged, one would not be out a lot of
> > money.
> >
> > John AF5CC
> 
> I don't know the answer to your question, but if you need this sort of thing, 
> I'd either
> 
> 1) Look for a professional tool designed for this sort of use.
> 2) Take a standard unit and ruggedise is myself.
> 
> 
> 
> 
> ------------------------------
> 
> Message: 4
> Date: Fri, 15 Jun 2012 18:27:07 -0700
> From: "Dan Violette" <danki6x at socal.rr.com>
> Subject: Re: [Kenwood] TS-430S USB/LSB receive stopped working
> To: "'Ian Wilson'" <ianmwilson73 at gmail.com>, <kenwood at mailman.qth.net>
> Message-ID: <[email protected]>
> Content-Type: text/plain; charset="us-ascii"
> 
> I had a TS-440 so may have some of this testing incorrect for the -430 but:
> 
> In CW switch to the SSB filter and check. Should be able to quickly see if
> the issue is filter related. Or maybe switch to SSB on the CW station if
> you can't manually select a filter. Maybe that is what you did. You sound
> like you are on the right track.
> 
> Dan, KI6X
> 
> -----Original Message-----
> From: kenwood-bounces at mailman.qth.net
> [mailto:kenwood-bounces at mailman.qth.net] On Behalf Of Ian Wilson
> Sent: Friday, June 15, 2012 11:42 AM
> To: kenwood at mailman.qth.net
> Subject: [Kenwood] TS-430S USB/LSB receive stopped working
> 
> I have had a TS-430S for some time. It is used almost 100% on CW.
> Recently I discovered that receive on USB/LSB is 9 S-units down from the
> sensitivity on CW. This must have happened some time since last Field Day.
> 
> I am aware of the fix for poor relay contacts. However, I don't see any
> relays in the schematic that would seem to be related to SSB selection.
> 
> The next step would be to measure the control voltage on the PIN diodes that
> do the filter selection, I suppose.
> 
> Anyone encountered this problem before?
> 
> 73, ian K3IMW
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> ------------------------------
> 
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> End of Kenwood Digest, Vol 98, Issue 7
> **************************************