Which antenna do you recommend? From: Forrest Christian (List Account) Sent: Wednesday, March 28, 2018 1:02 PM To: af Subject: Re: [AFMUG] GPS antennas
Every external 'commercial' GPS antenna that I've seen has a N connector on the bottom of it. You can buy 'cheap chinese outdoor' GPS antennas with a long lead and a SMA connector on the end as well....but I'm not sure I'd trust those. On the equipment end, there doesn't seem to be a standard. I have gear with SMA, N, BNC and even F connectors for the GPS antenna. The cambium CMM's (CMM4 and earlier) seem to use BNC's. The LMG equipment uses N connectors. One of my two GPSDO's uses a F connector, the other uses a SMA. I have two symmetricam GPS distribution amplifiers which both have all N connectors. I have a GPS re-radiator amplifier which uses SMA connectors. I think it's safe to expect the outside antenna to have a N connector on it, since you probably don't want the cheap chinese antennas since they seem to fail on a fairly regular basis (poor quality electronics inside them). What you use on the inside probably can just be decided based on your mechanicals, not as per any standard. On Wed, Mar 28, 2018 at 7:32 AM, Chuck McCown <[email protected]> wrote: What does the CMM line of products use for an antenna? From: Jaime Solorza Sent: Tuesday, March 27, 2018 7:59 PM To: Animal Farm Subject: Re: [AFMUG] GPS antennas I have done N to SMA adapter on two jobs where antenna had N connectors. But most of the GPS antennas install in vehicle for tracking or 4G LTE mobile NVRs have been SMA. Jaime Solorza On Tue, Mar 27, 2018, 7:54 PM Chuck McCown <[email protected]> wrote: But if you have to install an outdoor GPS antenna, are you OK with terminating an SMA on a cable for that? Like RG58 or LMR195? From: Jaime Solorza Sent: Tuesday, March 27, 2018 7:49 PM To: Animal Farm Subject: Re: [AFMUG] GPS antennas SMA is what I use on GPS and even on GPS repeaters Installed in several manufacturing plants across border. Jaime Solorza On Tue, Mar 27, 2018, 7:39 PM Chuck McCown <[email protected]> wrote: What kind of GPS antennas does everyone prefer for outdoor mounting? What kind of RF connectors are prefered? I have a BITS clock completed (sans framing, will get back to that someday). It is rack mounted. But we have to cable it to an outside antenna. So, the installers will most likely have to terminate the cable. BNC, N, F, SMA, Mini UHF, UHF, lotsa options. What does the CMM family use for antennas and connectors? -- Forrest Christian CEO, PacketFlux Technologies, Inc. Tel: 406-449-3345 | Address: 3577 Countryside Road, Helena, MT 59602 [email protected] | http://www.packetflux.com
