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Frequently Asked Questions

Should I use a Rotor with my antenna?

Marine TV Antenna FAQ from Naval Electronics Inc
A rotor is not necessary and would not provide any increase in performance. Naval antennas are Omni-directional, which means they see equally well in all directions without being turned.
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What is the best external antenna to use?

Frequently Asked Questions about the Garmin Map60C and Map60...
Garmin and Gilsson seem. These models are discussed in a long thread here. Another shorter discussion starts here. Neoprene and sharkskin cases for the 60C and 60CS are discussed here and here. A great thread on cases for the 76C and 76CS can be found here
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Why not use a directional antenna?

Wardriving FAQ by Jeff Duntemann (Wireless LAN Security & Wa...
You can, and some do, in certain special circumstances. If you're standing somewhere (on top of a building or hill) and want to sense stations at a distance, you can use a directional gain antenna to "warscan" by rotating it on a camera tripod or just aiming it by hand.
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What antenna can I use with the MPR6000/7000?

WJ Communications - RFID Frequently - Asked Questions
Any panel-type antenna whose gain does not exceed 9dBi. Please refer to the WJ MPR Series operations manual for further compliance and operation details and usage information. The MPR cards are, however, a firmware update needs to be performed. Please download the software here. Not only does this include the C1G2 update, but also includes updated algorithms for better overall performance. For non-Gen2 applications, this firmware upgrade is still beneficial.
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What type of grease should I use in my rotor?

Norm's FAQS - frequently asked questions
We recommend either a white lithium or green emerald. Under no circumstances should wheel bearing grease or any other grease with fibrous material content be used. We strongly favor the American brands. Before buying a rotor made outside the U.S., find out from the dealer or manufacturer what the availability of parts and service will be. Also talk to someone who owns one. We constantly hear horror stories from people who buy foreign-made rotors and can't get either parts or service.
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Should I have my antenna mast resting directly on the upper housing of my rotor?

Norm's FAQS - frequently asked questions
Yes. Almost all of the rotors in medium and heavy service are capable of supporting over 1000 pounds of dead weight on the rotor housing. On the TR-44, CD-44, and CD-45 rotors, the standard control cable includes two #18 conductors and six #22 conductors, and it's fine for runs up to about 300 feet. On the Ham-series rotors and the Tailtwisters, this cable is good up to about 200 feet.
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Question: If I use the four rotor version, the fourth rotor doesn't step. Is there a problem?

Enigma FAQ
Answer: No! The answer is quite simple. The four rotor Enigma is derived from the three rotor version. The only changes were a thin reflector and fourth rotor, which took the same space as a normal wide reflector, and a little window to view the fourth rotor. That's all! They didn't adapt the rotor advance mechanism or add a fourth pawl. They just believed this wasn't important. The fourth rotor would only step once every 17,576 keystrokes.
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Can I use a grain loss sensor on my rotor?

Agtron Enterprises inc. - Agricultural Electronics Manufactu...
The sensors used for the walker and sieves are identical sensors. We simply labeled the channels walker and sieve. If there is a known area where you could mount a grain loss sensor to detect rotor loss, then there should be no problem.
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Can I use a different inside antenna?

wpsantennas.com - Frequently asked questions for Digital Ant...
Only Digital Antenna authorized products may be used with the DA4000SBR, DA4KSBR or DA4000MR, DA4KMR system. Using unauthorized equipment with the DA4000SBR, DA4KSBR system will harm the system, void the warranty and can be detected in the event of a failure.
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Why I have to use the Antenna in exact the Resonance?

austriamicrosystems AG - faq Access Mobilizing
The sending coil is in Series Resonance whereas the receiving coil is in parallel resonance. A serial gives low impedance, which results in a high current and a high-induced voltage over the coil. Due the resonance, a higher voltage as applied is achievable. This gives a higher transmitting field as without a resonance circuit. The induced voltages will be significantly smaller if you using the circuit out of resonance.
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Q Can I use this antenna on my RV?

Marine TV Antenna FAQ from Naval Electronics Inc
Omni-directional antennas are commonly used on RV's however at this time our mounting arrangements are designed for use on boats and may not adapt easily to your RV unless it can accept a 1.5 inch pipe mount.
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Can I use this antenna on my home?

Marine TV Antenna FAQ from Naval Electronics Inc
Yes an omni-directional antenna can be used on a house but if fringe reception is required, a directional antenna pointed at the fringe station will give better performance.
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What Antenna Polarization should I use?

Futurelink Global Inc. - Frequently Asked Questions
Most Point-to-Multipoint Wireless LAN systems use V-Pol (vertical polarization). This allows the use of inexpensive vertical omnidirectional wireless antennas. Higher-density areas are beginning to use more H-Pol (horizontal polarization) antennas for PtMP. Point-to-Point (backhaul) systems may use either vertical or horizontal polarization as long the same polarization is used at each end.
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Michwave Technologies
Most Point-to-Multipoint WLAN systems use V-Pol (vertical polarization). This allows the use of inexpensive vertical omnidirectional antennas. Higher-density areas are beginning to use more H-Pol (horizontal polarization) antennas for PtMP. Point-to-Point (backhaul) systems may use either vertical or horizontal polarization as long the same polarization is used at each end.
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What kind of antenna should I use?

Support FAQs about 802.11 wireless module and serial wireles...
The Airborne 802.11b Wireless LAN Module provides two U.FL antenna connections, which are designed for operation at 2.4GHz with a 50 ohm impedance. Diversity operation is supported when two antennas are employed. An antenna should be selected with the following criteria in mind: Match antenna directionality and radiation pattern to the intended operation - omni-directional or directional,
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Can I get DirecTV on the same antenna that I use for Internet?

FAQ
The solution we found was to carry the usual 18" TV dish and purchase a small tripod (Radio Shack sells them). DirecTV or Dish Network would then be available with as many LNBs as you need (HDTV also). This arrangement also gives the RVer more flexibility in treed areas.
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What is Rotor System?

Impressions Fitness & Health provides products and servi...
In order to respond to any unanswered questions or concerns about the Rotor System, we have compiled a list of FAQ'S discussing several topics, including performance, compatibility, adaptation... For any type of technical question, do not hesitate to consult the Technical FAQ'S or Owners Manuals for reference.
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Is it true that you can use longer cranks with the Rotor System?

Impressions Fitness & Health provides products and servi...
In reality, using longer or shorter cranks than what you really need can be damaging to the knee joint, forcing the knee to over-extend, move beyond the recommended angular limits at critical points, the dead points: 150? at the lowest point and 75? at the highest.
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Can I use any wireless antenna of my choice for my Access Point or CPE antenna?

Futurelink Global Inc. - Frequently Asked Questions
The strictly legal answer is NO. According to FCC Part 15 Section 15.204 "Only the wireless antenna with which an intentional radiator is authorized may be used with the intentional radiator". Those people in countries other than the US will need to consult their own regulations. If you are not sure if the antenna that you plan to use is certified with the radio system, ask the radio or antenna manufacturer/vendor.
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Can I use the VG Shark Fin Antenna to cover my Sirius antenna?

VG Shark Fin Antenna - FAQ
Yes, many of our customers have tried to cover the Sirius satellite radio antenna with our VG Shark Fin Antenna for a much better visual appeal. Your Sirius antenna has to be small enough to fit under the VG Shark Fin Antenna cover (i.e.Terk SIR-MINI SIRIUS antenna). It will required a slight modification (cutting a small groove) to allow the Sirius antenna wire to pass through the back.
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If a rotor produces less drag the slower it rotates, why don't you just stop the rotor?

CarterCopter FAQ on CarterAviationTechnologies.com
A stopped rotor would probably not produce any less drag than a slowly turning rotor when all factors are considered, and it has several disadvantages. Rotor blade centrifugal force (CF) provides a moment (force times a lever arm) that counters the blade lift to keep the blades from rising up excessively. As the rotor slows down, at some point there will not be enough CF to handle the blade lift on the advancing blade. This will cause the rotor to flap excessively.
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What's the best antenna to use?

Brismesh Inc. FAQ
Cheap antennas will work, but the more you spend, the better the quality of the gear is. What you should consider first is what kind of range or area you want to cover, and how much you're willing to spend on the gear. Typically, you'll either want a highly directional (yagi, helical or dish) for a single-person link, or an omni-directional (whip) or sector antenna for multi-person link. The mesh idea is to get most houses to have more than one antenna: two, or hopefully three.
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T6. What antenna should I use for the Sun?

Radio JOVE Project: Frequently-Asked Questions
Radio noise bursts from the Sun can be very strong . a single dipole antenna should be adequate. The Jove antenna kit contains materials for two dipoles, so for the sun all you have to do is put up one. As for the height . the higher the antenna, the closer to the horizon it will look. If the sun is passing close to overhead at local (as it will in June and July in the northern hemisphere) then mount the antenna at about 10 feet.
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Question: What scanner antenna should I use?

Scanner Frequently Asked Questions - General Information and...
Answer: The antenna which will be best for you will depend on what type of scanner you have and the signal strengths. The table below lists our range of antennas available.
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Can I use my own coax to connect the antenna to my computer?

Welcome to FireServe
Generally, no. Because of the high frequencies involved, special coax suitable for microwave use is required to keep the losses low. Several people have asked if they can substitute RG-58, RG-8 or RG-214. These coax types have unacceptably high losses at these frequencies. People occasionally ask about 75 ohm TV/satellite coax as well (RG-62), which is a definite no-go because of the incorrect impedance. Belden 9913 is questionable because of "water piping" problems.
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Can I use an external antenna with my Unwired service?

Unwired - FAQs - Technical Information
Although it is possible to use external antennas with the Unwired service we do not support or endorse such use. If you are experiencing any difficulty receiving an optimum signal, we recommend that you use the Unwired reception assistant, or contact Unwired technical support.
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What RF cable should I use for my antenna installation?

Michwave Technologies
We recommend Times Microwave LMR-series , Andrew Heliax , Belden RF-series or NK Cables USA cable for the lowest losses. Times LMR-1200 or Andrew LDF5-50A Heliax will produce 2.3 dB loss in a 100 foot run. Times LMR-400 and Belden RF400 will produce 3.3 dB loss in a 15m (50') run at 2450 MHz. Belden RG-213/U cable may also be used for runs of less than 7.5m (25'). Total attenuation should not exceed approximately 3 dB. Cables and connectors may be ordered through TESSCO.
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Can I use the my old antenna from my C91 installation?

Amer-King
No. You must install an Ameri-King antenna that has been certified for use with an Ameri-King ELT. The TSO C91a requires that the antenna be part of the approved "system" that the letter of TSO is granted to. Ameri-King specifies the 30-inch minimum to reduce the chance of re-radiation problems and GPS interference. Installation of the antenna closer than 30 inches will not violate the TSO but is done so at the installers risk.
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Can I use a Digital Antenna amplifier in Europe?

FAQs - ACS Wireless
Digital Antenna amplifier models DA4000, DA4KMR-10A, DA4KMR-30U and DA4KSBR-50U operate on the 800 and 1900 MHz cellular bands. These models do not operate on iDEN, Nextel or European GSM networks. We currently do not manufacture an amplifier for the European GSM network. Digital Antenna is the company name. All of our antennas perform equally well for both digital and analog communications.
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