[TowerTalk] Green Heron + Alpa Spid, suddenly 30 degrees off

[john at kk9a.com]

I had a similar problem with a prop pitch rotator. If it continues to
loose calibration, you can try changing the reed switch. If that does
not work, I am sure that W2FU can help you with the controller. 

John KK9A 

On 2013-09-17 10:34, Andreas Hofmann wrote: 

> John,
> 
> The alpha spid rotator uses a magnetic reed switch and is advertised with a 1 degree precision (http://alfaradio.ca/alfaspid-1.html [1]). Also, I can still turn the antenna and the controller advances the reading, it is just off by the fixed offset.
> 
> Will see if I can just reapply the offset.
> 
> Thanks
> Andreas
> 
> -----Original Message-----
> From: john at kk9a.com [mailto:john at kk9a.com] 
> Sent: Tuesday, September 17, 2013 4:19 AM
> To: towertalk at contesting.com
> Cc: Andreas Hofmann
> Subject: re: [TowerTalk] Green Heron + Alpa Spid, suddenly 30 degrees off
> 
> I am not sure what type of sensor the Alpa Spid uses. I recently had a potentiometer in a TIC ring get very tight and all of a sudden that antenna was not pointing where the controller said it was. If the Alpa Spid uses a pot, do you have another controller that you can try? With the Green Heron controller, it is possible to accidentally change the offset or direction reading (if using a reed switch). If this is a common problem for you, I believe that you can lock the menu.
> 
> John KK9A
> 
> To: "towertalk at contesting.com" <towertalk at contesting.com>
> Subject:[TowerTalk] Green Heron + Alpa Spid, suddenly 30 degrees off
> From: Andreas Hofmann <Andreas.Hofmann at microsoft.com>
> Date: Tue, 17 Sep 2013 04:26:49 +0000
> 
> Hi,
> 
> I noticed that my beam heading is off about 30 degrees suddenly. It does not appear that the mast has come loose. I am guessing the offset setting just somehow got lost. Before I go in the settings and fix the value, I wanted to ask here.
> 
> Does anyone had this happen to them and/or does anyone have an idea what could be wrong? Could a power outage cause this?
> 
> Thanks
> Andy,
> KU7T

 

Links:
------
[1] http://alfaradio.ca/alfaspid-1.html