); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY )
Hi Jason, I had the same issue with a SatSync GPS. I got an old attenuator (burned out or unknown spec), N type in my case but whatever matches your splitter. I unscrewed it and removed the resistors. I placed a 0.001uF 63V ceramic capacitor between in and out and a load resistor (calculated to draw just above the antenna warning current) between out (Rx side) and ground. I did not feel this resistor would affect the signal too much, but slipped a ferrite bead over the ground end lead just for luck. It seems to work OK. Robert G8RPI. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jason Rabel Sent: 27 July 2007 21:53 To: 'Discussion of precise time and frequency measurement' Subject: Re: [time-nuts] Building a DC Block Thingy.... ); SAEximRunCond expanded to false Errors-To: time-nuts-bounces+robert.atkinson=genetix.com+robert.atkinson=genetix.co [EMAIL PROTECTED] I have 2 other GPS devices already on the splitter, so there is really no need for any DC current to be passed as the splitter will just sink it. I just wanted to build an extra measure of safety in there sinking the 12V before the splitter *incase* the other 2 GPS devices are turned off or something happens. Yes I'll probably plug in the NTS and check the power on the antenna port, if it stays at 5V then I can at least use it temporarily to ensure that it's working and everything. I'll look into some of the mini-circuits stuff on eBay and see what I can find. I probably won't buy / build anything until the unit arrives. I might be able just to desolder a component and sink the 12V internally before it gets injected to the RF signal. But I don't want to cut any PCB traces or do anything that is irreversible. Thanks for all your input guys and various solutions. :) I'm surprised nobody said get a 12V antenna... lol. Does anyone have any spare outdoor mast style they would sell (cheap)? I remember I saw some on eBay a while back, I'm sure more will pop up eventually. Jason > My first thought here would be to use a small 3 pin 5V regulator to drop the > DC down, and then capacitively couple in and out to let the RF through. > > Interesting to see what other comments you get. > > Rob K _______________________________________________ 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. -------------------------------------------------------- Genetix Limited - Queensway, New Milton, Hampshire, BH25 5NN Registered in England No. 2660050 www.genetix.com Any opinions expressed in this email are those of the individual and not necessarily Genetix Ltd (Genetix) or any company associated with it. This email and any files transmitted with it are confidential and solely for the use of the intended recipient. If you are not the intended recipient or the person responsible for delivering to the intended recipient, be advised that you have received this email in error and that any use is strictly prohibited. If you have received this email in error please notify Genetix by telephone on +44 (0)1425 624600. The unauthorised use, disclosure, copying or alteration of this message is strictly forbidden. This mail and any attachments have been scanned for viruses prior to leaving Genetix network. Genetix will not be liable for direct, special, indirect or consequential damages as a result of any virus being passed on, or arising from alteration of the contents of this message by a third party. -------------------------------------------------------- _______________________________________________ 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.
