You may consider putting a resistor in a coax connector and a tee in the antenna circuit, so you may pull a little more current.
You should be able to measure the current with your meter that the antenna draws, and then size the resistor to pull the difference you need. Brian - KD4FM Ian Sheffield wrote: > I have noticed on my unit that with one particular active antenna (a small > magnetic base unit for vehicles), the flag often cycles between normal and > open. > > It could be that some of the newer, smaller antennas use less current that > the older ones and the antenna current sensing on the Thunderbolt can't > cope. > > ----- Original Message ----- > From: <[EMAIL PROTECTED]> > To: <[email protected]> > Sent: Friday, September 12, 2008 2:41 PM > Subject: Re: [time-nuts] Trimble GPSDO power supply unit. > > >> Gents, >> >> Sorry if my mail give the impression that I am complaining about the >> blown PSU, it is because my English is not as good as it should be..... >> just wanted some help to repair the unit.....and in the mean time I >> have already installed the GPSDO into a nice small box with a home >> built PSU and now looks like a table-top "Frequency Standard" instrument >> >> NEW SUBJECT... >> >> When I use the GPSDO direct from an active antenna after power >> interruption the unit recover relative soon,..... >> but when the GPSDO used from a antenna distribution box and this way >> the GPSDO sensing the antenna is OPEN, then after power interruption >> the unit can not recover.......???????----------even after a long >> period...... >> Anybody had the same experience?????????? >> >> >> Thanks and regards, >> Ernie. >> >> >> >> >> >> -----Original Message----- >> From: David Ackrill <[EMAIL PROTECTED]> >> To: Discussion of precise time and frequency measurement >> <[email protected]> >> Sent: Fri, 12 Sep 2008 8:55 am >> Subject: Re: [time-nuts] Trimble GPSDO power suply unit. >> >> >> >> [EMAIL PROTECTED] wrote: >> >>> After connecting all wires to the Trimble plug and made a check if >> all >>> voltage is correct and left the PS unit to run >>> on the table without load/connecting to the GPSDO, about 15min got a >>> big bang and the Power Supply Unit blow-up. >> On my unit the PSU was not working when it arrived. >> >> The quickest solution, for me, was to go to a local electronics shop >> and >> buy a new unit. >> >> Dave >> >> _______________________________________________ >> time-nuts mailing list -- [email protected] >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. >> >> >> _______________________________________________ >> time-nuts mailing list -- [email protected] >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. > > > -------------------------------------------------------------------------------- > > > > No virus found in this incoming message. > Checked by AVG - http://www.avg.com > Version: 8.0.169 / Virus Database: 270.6.21/1667 - Release Date: 9/11/2008 > 18:55 > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
