[amsat-bb] Re: Yaesu FT-897 and HRD satellite tracking problem

[Dave Matthews]

Yes, I've tried every available baud rate.

73, KI4PSR


Andrew Rich wrote:
> did u try changing the baud rate ?
> 
> 
> 
> ----------------------------------------------------------------------------
> Andrew Rich VK4TEC
> vk4tec at people.net.au <mailto:vk4tec at people.net.au>
> http://www.tech-software.net
> 
> 
> 
> 
> -----Original Message-----
> From: amsat-bb-bounces at amsat.org [mailto:amsat-bb-bounces at amsat.org]On
> Behalf Of Dave Matthews
> Sent: Thursday, 27 December 2007 6:06 AM
> To: Simon Brown (HB9DRV)
> Cc: amsat-bb at amsat.org
> Subject: [SPAM] [amsat-bb] Re: Yaesu FT-897 and HRD satellite tracking
> problem
> Importance: Low
> 
> 
> Thank you Simon, and I appreciate the response from the guru as I
> appreciate your fine program!
> 
> I have tried all of the procedures I could glean from the HRD forum and
> messages on the pertinent Yaesu group, and eham.  I have grounded,
> beaded with ferrites, shielded, tried different cables etc., and I still
> get the chuff-chuffing noise that coincides with the black square
> animation on the upper left of the satellite tracking tool screen.
> 
> I have tried different CAT baud rates, and switched from a RS-232
> interface to a USB interface.  (I still have another more direct USB
> attempt to make after I build the Ham Gadgets interface).  And although
> I presently have a few beads on the CT-62 cable I guess I can add a few
> more beads and a few more loops through them, but so far there has been
> absolutely no difference notices with or without the beads.
> 
> Advice on the HRD forums follows yours: 'noise radiating from the CT-62
> cable'.  I don't think it is in this case as I have tested and improved
> the shielding and added ferrites, etc.
> 
> My experiments suggest that this may be a problem inherent to the rig,
> maybe losing its control of receiver parameters momentarily as it acts
> on the repetitive CAT data.  And finally a user in the Yaesu group
> suggests that this problem is normal for these Yaesu FT-897/857 rigs and
> some others.  But that user mentions simply turning off the polling to
> avoid the noise.  I want to use the HRD automatic Doppler shift
> tracking, so I need at least some periodic polling to update the rig.
> 
> Thanks you Simon for your timely response!
> I will keep looking and experimenting.
> Dave KI4PSR
> 
> 
> 
> (I would appreciate hearing from any users of an FT-897 or FT-857 who
> are using the satellite tracking tool in HRD with polling to track the
> Doppler shift.  Do you have the same chuff-chuffing?  Did you find a fix?)
> 
> Simon Brown (HB9DRV) wrote:
>> Sounds like radiation from the CT-62 cable - try putting a ferrite or
>> two on the cable.
>>
>> Simon Brown, HB9DRV
>>
>> ----- Original Message ----- From: "Dave Matthews" <dave at lostfrogs.com>
>>
>>> I have a periodic 'polling?' noise issue with my Yaesu FT-897
>>
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