[time-nuts] Has my TBolt gone south ?

William Beam wbeam at gci.net
Wed Aug 12 19:18:54 EDT 2015


A nearby thunderstorm could have taken out the preamp in the antenna.

73 Bill Beam
NL7F
----- Original Message -----
From: "Discussion of precise time and frequency measurement" 
To:
Cc:
Sent:Wed, 12 Aug 2015 23:29:45 +0200
Subject:Re: [time-nuts] Has my TBolt gone south ?

 On 8/12/2015 8:29 PM, Hal Murray wrote:

 > How long did you wait after turning it on?
 > How good is your antenna position?
 > Did you tell it to remember the location after a survey finished?
 >
 > If it's been off for a few weeks, it doesn't know where the
satellites are.
 > To get started, it has to find one by a brute force search. With a
good
 > antenna, that doesn't take very long. Then it takes 15 minutes to
collect
 > the satellite info. With a poor antenna location, it takes longer,
maybe a
 > lot longer.

 Thanks Hal for your answer.

 My TB now is switched on since yesterday, but no satellites are
acquired...
 Last time I switched it on, it worked, and, even after a long off
period, it did take not more than
 a few minutes to acquire the first satellite.

 Yesterday, after I saw that no satellites did show up in LH, I issued
the ! command to do a cold reset,
 just to see if it could be of help.

 My antenna is a timing antenna, on the chimney of my house,
completely free from obstacles.
 There is the possibilities that a thunderstorm has broken its small
mast, tomorrow I will check.
 This seems to be the only reasonable cause of the malfunction... the
TB accepts commands
 and sends back status info. Unless its GPS receiver has developed a
fault..

 73 Alberto I2PHD

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