Re: [time-nuts] time-nuts Digest, Vol 96, Issue 70
Wow! Great info. The 5v mag mount antennae are working, but the receivers are cycling between 2-D and 3-D (5 or 6-bird) modes. With the 26dB trimbles, I suspect I'm loosing ~5db in the 30ft of crumby RG-5, and a little pattern with my rain-gutter backplane. I don't have too much arial obstruction, but that's no excuse from overkill: I'll be on the lookout for 26- or 40[?!?]-dB cones. Does anyone have a Lucent part number available? -CH On Jul 17, 2012, at 5:00, time-nuts-requ...@febo.com wrote: Send time-nuts mailing list submissions to time-nuts@febo.com To subscribe or unsubscribe via the World Wide Web, visit https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts or, via email, send a message with subject or body 'help' to time-nuts-requ...@febo.com You can reach the person managing the list at time-nuts-ow...@febo.com When replying, please edit your Subject line so it is more specific than Re: Contents of time-nuts digest... Today's Topics: 1. Re: XL-DC Antenna Requirements (Tom Knox) 2. Re: XL-DC Antenna Requirements (Bob Martin) -- Message: 1 Date: Mon, 16 Jul 2012 18:11:59 -0600 From: Tom Knox act...@hotmail.com To: Time-Nuts time-nuts@febo.com Subject: Re: [time-nuts] XL-DC Antenna Requirements Message-ID: bay162-w4046e629af83f1d3bded81df...@phx.gbl Content-Type: text/plain; charset=iso-8859-1 Hi Chris; There were a number of XL-DC produced with 12vdc antenna power and should be marked near the connector. There are also some marked Down converter required. Other then then those the 58532A is a great choice andf sold under a number of names such as VIC-100, the Lucent antennas are also nice. The lucent are available in three gains 20, 26, 40 dB version. Most are the 26dB version and are a great product. Placement can be important, and although you could use indoors it will perform best as low as possible with a full view of the sky. (Low to avoid terrestrial interference). Thomas Knox Date: Tue, 17 Jul 2012 00:50:02 +0200 From: azelio.bori...@screen.it To: time-nuts@febo.com Subject: Re: [time-nuts] XL-DC Antenna Requirements The XL-DC is a 6 channels receiver, so no other benefit other than a greater probability to see constantly 6 satellites is gained from 24 to 32 satellites constellation. On Mon, Jul 16, 2012 at 11:59 PM, Chris Hoffman cq.k...@gmail.com wrote: All, Though somewhat outmoded, looking forward to starting my own time shop with two XL-DC controllers that I have been lucky enough to pick up recently. My question: Do I really need to invest in the likes of the HP 58532A antennae, or will my surplus Trimble magnetic antennae -- magnetically attached to a random ferrous backplane -- do? I guess what I am really asking: what are the relevant antenna design requirements here, and does the advent of as 32-satellite-constellation have any effect upon the antenna choice (i.e. design downgrade) for the TrueTime XL-DC? -CH Chris Hoffman cq.k...@gmail.com http://ar.ctur.us -CH Chris Hoffman cq.k...@gmail.com http://ar.ctur.us ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. -- Message: 2 Date: Mon, 16 Jul 2012 18:02:49 -0700 From: Bob Martin k6...@comcast.net To: time-nuts@febo.com Subject: Re: [time-nuts] XL-DC Antenna Requirements Message-ID: 8dbef16d-ce19-4088-9347-458c02a53...@comcast.net Content-Type: text/plain;charset=us-ascii Chris-- The 58532A is somewhat higher gain (30dBi or better) than most mag-mount antennas (26dBi typ IIRC). The pointy nature of the 58532A also serves as an avian deterrent, reducing the accumulation of attenuating deposits... Running two receivers, I would highly recommend a real GPS distribution amp such as the 58535A. Such a beast will let you run both receivers from one antenna, while providing isolation between the receivers. I just happen to have one handy, having recently pulled it out of service and replaced it with a 4-port model to better support my time-nuttiness. Contact me off list if you would be interested. 73 Bob k6...@arrl.net On Jul 16, 2012, at 16:01, time-nuts-requ...@febo.com wrote: Message: 1 Date: Mon, 16 Jul 2012 14:59:52 -0700 From: Chris Hoffman cq.k...@gmail.com To: time-nuts@febo.com Subject: [time-nuts] XL-DC Antenna Requirements Message-ID: 0208b173-9f7b-49b9-ae83-ee231ebba...@gmail.com Content-Type: text/plain;
Re: [time-nuts] time-nuts Digest, Vol 96, Issue 70
Hi The antenna gain is likely *plenty* for that short a run of coax. Bob -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Chris Hoffman, KG6O Sent: Tuesday, July 17, 2012 11:16 AM To: time-nuts@febo.com Subject: Re: [time-nuts] time-nuts Digest, Vol 96, Issue 70 Wow! Great info. The 5v mag mount antennae are working, but the receivers are cycling between 2-D and 3-D (5 or 6-bird) modes. With the 26dB trimbles, I suspect I'm loosing ~5db in the 30ft of crumby RG-5, and a little pattern with my rain-gutter backplane. I don't have too much arial obstruction, but that's no excuse from overkill: I'll be on the lookout for 26- or 40[?!?]-dB cones. Does anyone have a Lucent part number available? -CH On Jul 17, 2012, at 5:00, time-nuts-requ...@febo.com wrote: Send time-nuts mailing list submissions to time-nuts@febo.com To subscribe or unsubscribe via the World Wide Web, visit https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts or, via email, send a message with subject or body 'help' to time-nuts-requ...@febo.com You can reach the person managing the list at time-nuts-ow...@febo.com When replying, please edit your Subject line so it is more specific than Re: Contents of time-nuts digest... Today's Topics: 1. Re: XL-DC Antenna Requirements (Tom Knox) 2. Re: XL-DC Antenna Requirements (Bob Martin) -- Message: 1 Date: Mon, 16 Jul 2012 18:11:59 -0600 From: Tom Knox act...@hotmail.com To: Time-Nuts time-nuts@febo.com Subject: Re: [time-nuts] XL-DC Antenna Requirements Message-ID: bay162-w4046e629af83f1d3bded81df...@phx.gbl Content-Type: text/plain; charset=iso-8859-1 Hi Chris; There were a number of XL-DC produced with 12vdc antenna power and should be marked near the connector. There are also some marked Down converter required. Other then then those the 58532A is a great choice andf sold under a number of names such as VIC-100, the Lucent antennas are also nice. The lucent are available in three gains 20, 26, 40 dB version. Most are the 26dB version and are a great product. Placement can be important, and although you could use indoors it will perform best as low as possible with a full view of the sky. (Low to avoid terrestrial interference). Thomas Knox Date: Tue, 17 Jul 2012 00:50:02 +0200 From: azelio.bori...@screen.it To: time-nuts@febo.com Subject: Re: [time-nuts] XL-DC Antenna Requirements The XL-DC is a 6 channels receiver, so no other benefit other than a greater probability to see constantly 6 satellites is gained from 24 to 32 satellites constellation. On Mon, Jul 16, 2012 at 11:59 PM, Chris Hoffman cq.k...@gmail.com wrote: All, Though somewhat outmoded, looking forward to starting my own time shop with two XL-DC controllers that I have been lucky enough to pick up recently. My question: Do I really need to invest in the likes of the HP 58532A antennae, or will my surplus Trimble magnetic antennae -- magnetically attached to a random ferrous backplane -- do? I guess what I am really asking: what are the relevant antenna design requirements here, and does the advent of as 32-satellite-constellation have any effect upon the antenna choice (i.e. design downgrade) for the TrueTime XL-DC? -CH Chris Hoffman cq.k...@gmail.com http://ar.ctur.us -CH Chris Hoffman cq.k...@gmail.com http://ar.ctur.us ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. -- Message: 2 Date: Mon, 16 Jul 2012 18:02:49 -0700 From: Bob Martin k6...@comcast.net To: time-nuts@febo.com Subject: Re: [time-nuts] XL-DC Antenna Requirements Message-ID: 8dbef16d-ce19-4088-9347-458c02a53...@comcast.net Content-Type: text/plain;charset=us-ascii Chris-- The 58532A is somewhat higher gain (30dBi or better) than most mag-mount antennas (26dBi typ IIRC). The pointy nature of the 58532A also serves as an avian deterrent, reducing the accumulation of attenuating deposits... Running two receivers, I would highly recommend a real GPS distribution amp such as the 58535A. Such a beast will let you run both receivers from one antenna, while providing isolation between the receivers. I just happen to have one handy, having recently pulled it out of service and replaced it with a 4-port model to better support my time-nuttiness. Contact me off list if you would be interested. 73 Bob k6...@arrl.net On Jul 16, 2012, at 16:01, time-nuts
Re: [time-nuts] time-nuts Digest, Vol 96, Issue 70
Yes, I agree, it is not an antenna gain problem... it is better to find a way to draw the constellation like LH for the TBolt. This way you can find out if the antenna is free or not from obstructions. On Tue, Jul 17, 2012 at 5:25 PM, Bob Camp li...@rtty.us wrote: Hi The antenna gain is likely *plenty* for that short a run of coax. Bob -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Chris Hoffman, KG6O Sent: Tuesday, July 17, 2012 11:16 AM To: time-nuts@febo.com Subject: Re: [time-nuts] time-nuts Digest, Vol 96, Issue 70 Wow! Great info. The 5v mag mount antennae are working, but the receivers are cycling between 2-D and 3-D (5 or 6-bird) modes. With the 26dB trimbles, I suspect I'm loosing ~5db in the 30ft of crumby RG-5, and a little pattern with my rain-gutter backplane. I don't have too much arial obstruction, but that's no excuse from overkill: I'll be on the lookout for 26- or 40[?!?]-dB cones. Does anyone have a Lucent part number available? -CH On Jul 17, 2012, at 5:00, time-nuts-requ...@febo.com wrote: Send time-nuts mailing list submissions to time-nuts@febo.com To subscribe or unsubscribe via the World Wide Web, visit https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts or, via email, send a message with subject or body 'help' to time-nuts-requ...@febo.com You can reach the person managing the list at time-nuts-ow...@febo.com When replying, please edit your Subject line so it is more specific than Re: Contents of time-nuts digest... Today's Topics: 1. Re: XL-DC Antenna Requirements (Tom Knox) 2. Re: XL-DC Antenna Requirements (Bob Martin) -- Message: 1 Date: Mon, 16 Jul 2012 18:11:59 -0600 From: Tom Knox act...@hotmail.com To: Time-Nuts time-nuts@febo.com Subject: Re: [time-nuts] XL-DC Antenna Requirements Message-ID: bay162-w4046e629af83f1d3bded81df...@phx.gbl Content-Type: text/plain; charset=iso-8859-1 Hi Chris; There were a number of XL-DC produced with 12vdc antenna power and should be marked near the connector. There are also some marked Down converter required. Other then then those the 58532A is a great choice andf sold under a number of names such as VIC-100, the Lucent antennas are also nice. The lucent are available in three gains 20, 26, 40 dB version. Most are the 26dB version and are a great product. Placement can be important, and although you could use indoors it will perform best as low as possible with a full view of the sky. (Low to avoid terrestrial interference). Thomas Knox Date: Tue, 17 Jul 2012 00:50:02 +0200 From: azelio.bori...@screen.it To: time-nuts@febo.com Subject: Re: [time-nuts] XL-DC Antenna Requirements The XL-DC is a 6 channels receiver, so no other benefit other than a greater probability to see constantly 6 satellites is gained from 24 to 32 satellites constellation. On Mon, Jul 16, 2012 at 11:59 PM, Chris Hoffman cq.k...@gmail.com wrote: All, Though somewhat outmoded, looking forward to starting my own time shop with two XL-DC controllers that I have been lucky enough to pick up recently. My question: Do I really need to invest in the likes of the HP 58532A antennae, or will my surplus Trimble magnetic antennae -- magnetically attached to a random ferrous backplane -- do? I guess what I am really asking: what are the relevant antenna design requirements here, and does the advent of as 32-satellite-constellation have any effect upon the antenna choice (i.e. design downgrade) for the TrueTime XL-DC? -CH Chris Hoffman cq.k...@gmail.com http://ar.ctur.us -CH Chris Hoffman cq.k...@gmail.com http://ar.ctur.us ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. -- Message: 2 Date: Mon, 16 Jul 2012 18:02:49 -0700 From: Bob Martin k6...@comcast.net To: time-nuts@febo.com Subject: Re: [time-nuts] XL-DC Antenna Requirements Message-ID: 8dbef16d-ce19-4088-9347-458c02a53...@comcast.net Content-Type: text/plain;charset=us-ascii Chris-- The 58532A is somewhat higher gain (30dBi or better) than most mag-mount antennas (26dBi typ IIRC). The pointy nature of the 58532A also serves as an avian deterrent, reducing the accumulation of attenuating deposits... Running two receivers, I would highly recommend a real GPS distribution amp such as the 58535A. Such a beast will let you run
