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Inquiry: Does a roof-mounted multi-band antenna need to be grounded for lightening or surge protection?

GJ-RSF-DB-G4W-TTT: RFMAX Shark Fin Antenna

We recently had a client reach out to us about an antenna that would work well for their Panasonic Toughbook 20. We had recommended the GJ-RSF-DB-G4W-TTT antenna because of its ability to handle the connections being broadcasted and received in rural areas with its optimization for combing 1575 MHz GPS, 698-2700 3G/4G/LTE cellular data communication and 2.4 / 5 GHz WIFI/WLAN. They then went on to ask whether the antenna would need to be grounded for lightening or surge protection. Fortunately, they do not need to be grounded because the antennas are encapsulated in a plastic housing and isolated from the vehicles’ metal surface.

 

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Tech Help at Arcadian Inc. / arcantenna.com can be reached by email at techsupport@arcadianinc.com

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Crimping Tools Needed to Replace Mobile Radios

October 1, 2019 12:39:50 PM EDT

Recently a client reached out to us about replacing a few of the antennas for their mobile radios with base station configurations. He had a few questions regarding the transition of his device/antenna from analog to DMR in the upcoming year. He stated that the antennas being replaced were Laird FG450 and the radios were Motorola CM300D with a power of 25 watts UHF. He wanted a recommendation on some cables with lengths 20’, 20’, 20’, 50’ and 60’ because he would be replacing them during the transition. What cable type should he use? Should he get a spool with connectors and do we have those cables with N-male on one end and mini-UHF male on the other end? I figured it would be best to share with you all the recommendations that we made for the client.

 

I’ll start by saying that we don’t recommend building cable assemblies “in the field” since most cables fail without factory testing, however, we can create the cables that you need. I recommend the use of our PT240 which is an LMR240 equivalent cable that works at the 450 MHz frequency. It has an outside diameter of approximately 0.24 inches, offers low loss, and is quite flexible to work with. If you feel very strongly about going with a very low loss cable, then you should opt for an LMR400 equivalent. Below I have included the “loss” characteristics:

 

  • PT240: loss of 5.3 dB per 100 feet (but, it’s small diameter makes it flexible and easy to work with)
  • PT400: loss of 2.7 dB per 100 feet (but, it’s large diameter makes it quite rigid and tough to bend)

 

Note: If you would like to buy bulk cables for PT240 please click here and if you would like to buy bulk cables for PT400 please click here.

 

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Tech Help at Arcadian Inc. / arcantenna.com can be reached by email at techsupport@arcadianinc.com

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Q) Do you have an antenna similar to the “salt shaker” that we currently buy (TRA806/17103P), but will support4G LTE and Wi-Fi?

 

A) We have part number TRA6927M3PW-001, a white ‘Phantom’ style omnidirectional antenna with N-Female permanent 5/8 inch mount operating at 698-2700 MHz range. It offers a gain of 3 dBi, REQUIRES mounting on metallic ground planes for the best performance, and is virtually indestructible.

 

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Tech Help at Arcadian Inc. / arcantenna.com can be reached by email at techsupport@arcadianinc.com

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Voice Communications and M2M

October 1, 2019 12:36:07 PM EDT

 What does machine to machine (M2M) mean and does this mean the antenna is not equipped for voice communications?

 

Machine to machine, or M2M, is an umbrella term used to describe all technology that exchanges information between one another and performs certain actions without the help of humans. The exchange of information is direct and uses any communications channel, included wireless and wired. This form of communication between machines is the primary business we are in now. When it comes to antennas with voice applications, all of our antennas are built with that element. All of our antennas work with voice communications, and depending on the antenna you select, will work on the correct tuned radio frequencies. For instance, if you are looking to get a low SWR in the 435-450 range, you would tune your radio to transmit and receive at 430-450 MHz.

 

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Tech Help at Arcadian Inc. / arcantenna.com can be reached by email at techsupport@arcadianinc.com

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Will the FM2 bracket work for the Laird OD9 series?

October 1, 2019 12:32:23 PM EDT

Unfortunately, the FM2 will not work with the OD9 series antennas from Laird, however, the OD9 series ship with a dual U-bolt mounting system. It a very basic mount but it works fine and we don’t have any other mounts to work with this system. If you are willing to expand your antenna search beyond the OD9 series to all small antennas that work in the 900 MHz range, we have two recommendations found below.

 

  • ROSA-900-SNF: An RFMAX outdoor rated 900 MHZ omnidirectional stick antenna with N-Female connectors for IoT use in the US 902-928 MHz bands. The antenna features a “weep hole” with a waterproof membrane so it can be used indoors and outdoors.
  • ROSA-900-SNM: An RFMAX outdoor rated 900 MHZ omnidirectional stick antenna with N-Male connectors for IoT use in the US 902-928 MHz bands. This antenna can be used indoors and outdoors.

 

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Tech Help at Arcadian Inc. / arcantenna.com can be reached by email at techsupport@arcadianinc.com

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We recently had a client reach out to us about a cellular antenna that he wanted to place on the side of his building. He noticed that we had a vehicular antenna, part 170653-000, and wanted something similar to that product. He also informed us that he was looking for a 25-foot cable extension and wanted to receive some recommendations.

 

Considering part # 170653-000 is a dual cellular product and our assumption that your main concern is to have an antenna outside, we recommend 2 pcs of the Cradlepoint outdoor omnidirectional antenna # 170668-000. Part # 170668-000 is a multi-band omnidirectional antenna that collects 3G/4G/LTE cell tower signals and sends it to an integrated or embedded Cradlepoint modem/ router. It doesn’t include any cables so we have a recommendation in regards to the client wants a 25-foot extension cable.

 

I recommend 2 pcs of RFMAX’s part # PT240-025-SNM-SSM, an LMR240 type equivalent low loss 25-foot coaxial cable with N-Male and SMA Male connectors.

 

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For further information regarding the application of this product, you can always reach out to our tech support!

Tech Help at Arcadian Inc. / arcantenna.com can be reached by email at techsupport@arcadianinc.com

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Antenna with UL Type 4X Training

October 1, 2019 11:34:10 AM EDT

We recently came in contact with a client that was looking for an antenna with UL Type 4X rating similar to IP67. He claimed that he wanted to mount external antennas on a NEMA box.

 

In response, all of our antennas are typically IP rated, but not UL rated because all of our antennas do not have any active element which means UL rating is not required for our antennas. In my opinion, if I were putting a router in a NEMA box (I’m assuming we are talking about a cellular router?) I would use the appropriate version of the RFMAX “brick” style antenna. This antenna is super heavy duty with what I believe to be excellent gasketing.  Below you will find web links for a 2-in-1 (dual cellular) 3-in-1 (GPS + dual cellular) and 5-in-1 (GPS, dual cellular & dual Wi-Fi) models.  In addition, I’ve included hi-resolution photos for you to view.

 

 

 

RFMAX

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Tech Help at Arcadian Inc. / arcantenna.com can be reached by email at techsupport@arcadianinc.com

 

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  Advantages Disadvantages
PT195: Recommended for use with frequencies under 900 MHz
  • Lower loss than standard RG58 cable
  • The most flexible

 

  • Less flexible than the RG58
  • Too much attenuation/ loss for frequencies over 900 MHz
  • Don’t recommend using cable lengths over 15-20 ft. at 900 MHz
PT240: Recommended for use with frequencies from 150 MHz – 5 GHz

 

  • Much lower loss and higher performance than standard RG58 and PT195 cable
  • Flexible
  • Excellent for UHF RFID
  • Much less flexible than RG58 and PT195
  • Too much attenuation/ loss for frequencies over 900 MHz at lengths of 50+ ft.
PT400: Recommended for use with frequencies from 150 MHz – 5 GHz

 

  • Extremely low-loss and high performance
  • Relatively inexpensive due to high sale volumes
  • The least flexible of the three

 

Note: All cable assemblies are made to order and typically ship in 1-2 business days from the time we receive the order. Larger quantities may require longer lead times.

 

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Tech Help at Arcadian Inc. / arcantenna.com can be reached by email at techsupport@arcadianinc.com

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Antenna Similar to Alien’s ALR8696-C

October 1, 2019 10:08:07 AM EDT

Recently a client approached us about the Alien part # ALR8696-C. They were developing new software and need an antenna that utilized LHCP (left-hand circular polarization), which part # ALR8696-C does not. In response, I have come up with two suggestions, both of which come in LH and RH circular polarizations.

 

Suggestion 1

RCPL-902-09-SNF: This antenna measures in at 10 x 10 inches and features a gain of 9 dBic, a fixed N-Female connector, and an IP rating of 67.

 

Suggestion 2

RCPL-902-8-RTM-8: This antenna is the industry standard for passive UHF VHF RFID installations. It measures in at 10 x 10 inches and features a gain of 8.5 dBic, an 8-inch pigtail, and RP TNC-male connectors.

 

If you need a mount for either of the two antennas for your use, we recommend part # HDMNT-100MM.

 

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Tech Help at Arcadian Inc. / arcantenna.com can be reached by email at techsupport@arcadianinc.com

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Q) What is the difference between part numbers RDA698/2700SSM and RDA698/2700-1-SSM?

 

A) Firstly, I want to pose a question. Will you need to pass any carrier certification testing for your device? If you do need a certification, it leads me to the main difference between the two antennas. Part # RDA698/2700SSM does not have a high enough “efficiency” to pass the testing that AT&T, Verizon, or Sprint require. On the other hand, part # RDA698/2700-1-SSM is recommended if you plan on receiving a carrier certification. This antenna costs a bit more but will easily pass the carrier test for all brands. Below you will find a difference in the construction of each antenna.

 

 RDA698/2700SSM  RDA698/2700-1-SSM
 Height / Length (inches)  9  Height / Length (inches)  8.8
 Height / Length (mm)  228  Height / Length  229
 Width (inches)  0.94  Width (inches)  1.2
 Width (mm)  23.8  Width (mm)  30.5
 Weight (lbs)  0.07 lbs  Weight (lbs)  0.07 lbs

 

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