Mobile Antennas When selecting a mobile antenna, there are a number of factors to take into consideration that significantly effect the ultimate performance of the antenna, Gain requirements, electrical type, ground plane availability vs, requirements, placement on vehicle temporary vs, permanent mounting, coaxial type and loss ratings, physical size, appearance, and surrounding environment are all issuies that must be addressed to ersure the maximum performance from a mobile antenna installation, For over 30 years, Larsen engineers have been designing high-performance Kulrod mobile antennas in a variety of electrical types and configurations to meet the most demanding performance criteria and operating conditions, The electrical type or design of the mobile antenna is commonly referred to in terms of the wavelength of the antenna, 1/4 wave, 1/2 wave, 5/8 wave, etc, Each of these types has a very specific radiating pattern, and is why its consideration is so important in selecting a mobile antenna. For example, the signal radiating from a 1/4 wave antenna is directed more vertically thus making it ideal in urban environments where buildings might obstruct the signal, The design of a 5dB collinear mobile antenna is designed to direct the signal mote towards the horizon, This type of antenna is ideal in for applications in a more geograghicaly flat region where signal coverage is sparse, and must cover a larger area, Ground plane requirement is another critical factor in mobile antenna performance, and must be considered when determining the location of the antenna, Ground plane requirements vary given the type of mobile antenna and the frequency of operation, A typical 5/8 wave antenna at 150 MHz requires a ground plane of at least 42" in diameter, At 450 MHz, 15" is required, and 800 MHz, a minimum of 8" is considered sufficient, In terms of mounting mobile antennas on a vehicle, there are five general locations; the roof, front fender rear fender, trunk and rear window glass (although other glass mount locations maybe used), Of these, the center of an automobile roof is considered the best for mobile antenna placement, followed by the center of the trunk lid, the fenders,At Larsen, we want our customers to be confident that they can find the right antenna for the tight avolication For this reason. we | ave provided vou with some guidelines for mobile antenna selection , and then on-glass mounting, This performance and mechanical durability, ranking is determined by the amount of They include magnetic mounts (MM, MMR, ground plane provided by the positioning, MS), trunk lid mounts (TLM,TLP), trunk and clearance from obstruction (ie, the roof gutter brackets (TMB), mirror mount line), and is the reason the center of the roof brackets (MB), window clip mounts (KGK), is considered the ideal mounting location, and of course, traditional permanent hole provided the roof is metal, mounts for all series, The diagram below illustrates the effective loss (at 800 MHz) due to insufficient symmetrical ground plane, Although there may be some inherent losses, there are definite advantages to using the various locations, as well as optional mounting configurations, Larsen provides a complete selection of permanent and temporary mounting alternatives, using only the highest quality materials to ensure superior electrical Magnetic Mount Magnetic Mount (Reference Antennal Magnetic Mount Trunk Corner Corner of Roof -0.2dB Permanent Mount Center of Roof 3Adb Center of Roof O.0dB -0.2d8 Magnetic Mount Trunk Center -2.&dB Permanent Trunk Mount -2.1dB Trunk Lip Mount Trunk Center -2.8dB Magnetic Mount Corer of Hood -2.4dB On-Glass (Lawer) On-Glass (Middle) On-Glass (Upper) Geater-30dB = Center-1.2dB Center -0.5dB On-Glass (Lower) Corner of Window -3.00BMobile Antenna Series Designation The most popular is the NMO or "new Motorola" style mount, This product is styled after the industry standard TAD/TAE 3/4" hole mount, Larsen's NMO version consists of nickel plated brass bushing and silver plated contact for maxinium conductivity, and corrosion resistance, The NMO is available in the following temporary mounting styles, MM, MMR, 'TLM, TLE TMB and MMB. In addition, there is an NMO mount that is a 3/8" snap-in type, and a "THK" version for mounting on thick surfaces, LA The LA, or "Larsen Antenna mount is the original Larsen design, This mount is compatible with the GE "dome" style, 3/8" snap-in mounts. The mount is a 5/16"-24 threaded stud, with dome shaped Makroblend insulator, LA antennas are also compatible with LM mounts, allowing the flexibility of petmanent or temperary mounting, The CM series antenna is designated by its unique cone shape base, This brass cone provides for wider bandwidths and lower SWR across the band. It is primarily used for 800 & 900 MHz frequencies, CMs mount on the Larsen LM or any 5/16"-24 THDS stud, CM antennas are available in the MM, MMR, TLM, TLP and TMB mounting options, Thete are also mounts available with 1/4" and 1/2" longer studs for thick surface applications, PO The PO Series mount is an $0239/UHF type mount, and fits in a 3/4" hole, The mount is made of brass for conductivity and stainless steel for durability. The PO is available in the MM, MMR, TLM and TMB temporary mounting options, The LM or Larsen Mount" is the most simple and easiest of the Larsen mounts, requiring only three pieces to install, Based on a 5/16"- 24 THDS stud, this 3/4" hole mount provides a durable roof- hugging installation with high efficiency ground plane contact for full antenna gain potential, LM antennas are available in the MM, MMR, TLM, TLP and TMB mounting options, There are also mounts available with 1/4" and 1/2" longer studs for thick surface applications, MHW Similar to the PO series in that it mounts directly to an 0-239 UHF connector the MEW is a half wave design, and requires no sround plane for operation. The MHW can mount directly on a radio, or any of the PO permanent or temporary mounts, The MHW is available in VHF and UHF frequencies,Larsen offers a vanity of mobile antenna/mount stvles. providing literally thousands of different configurations for permanent and leninesas MTR ams eRe eRe Mmy-TaU ley eael cay (ec) ny Ble-9 The PHW is a half wave antenna with a flexible radiating element, Useful for quick set up, it is designed to be suspended from any object by the radiating element. No sround plane is required, Interfaces directly with a PL 259 connector 4 4 EF The EF is the elevated feed antenna line. The EF is designed to position the radiating element above the roof line or other obstructions, to provide a superior radiating pattern, Larsen EF antennas are available for the 800 & 900 MHz frequency ranges, and in a variety of permanent or temporary mounting configurations. The unique OM series is a self mounting, half wave antenna, The coax is integral to the antenna coil, allowing for minimal hele drilling. The half wave design makes it ideal for mounting on any surface, as no ground plane is required, Self mounting with three nuts and bolts, or self tapping screws, Available in VHE UHE 800 and 900 MHz frequencies, MM /MS These antennas are complete antenna/mount units incorporating either a 3" or 2" extra strength magnetic base with a whip antenna. The mini mag" antennas come with premium quality stranded coax for maximum durability, They are available in VHE UHE 800 and 900 MHz frequencies, in unity, 3dB and 5dB configurations, Larsen's patented KG Kulglass glass mount antennas feature a low impedance power transfer, and the industry's smallest footprint. With virtually no loss difference (.5dB) through the glass, the no holes mounting makes it an ideal option, The KG series is available in VHE UHE Dual Band (VHF/UHF), 800, 900 and 1850 MHz frequencies, Temporary clip on versions are available in 800 & 900 MHz.Mobile Antenna Mount Styles Larsens traditional magnetic mount offers has a rubber outer boot and Teflon tape for protection. It is available with standard RGS8A/U coax or premium dual shield coax. Offered for the NMO, LM (CM, LA), and PO antennas, Larsen's heavy duty round magnetic mount offers 90|bs of pull strength, and is available with standard RGS84/U coax or premium dual shield coax, Offered for the NMO, LM (CM, LA), and PO (MHW) antennas, The TMB is a trunk gutter bracket, mounting between the trunk "gutter" and the trunk lid, The TMB uses three screws to attach to the inside of the gutter, keeping them invisible from outside the vehicle, Offered for the NMO, IM (CM, LA), and PO (MHW) antennas, TLM The original Larsen trunk lid mount, the TLM is secured to the trunk lid by three set screws, This leaves absolutely no holes when removing the antenna and mount. Offered for the NMO, LM (CM, LA), and PO (MEW) antennas, TLP The TLP is Larsen's low profile trunk lid mount, The sleek compact design is only 3/4" high, and mounts with two set screws, It is constructed of a durable resin polymer plastic, and has a protective foam padded bottom surface, Standard in black, the TLP is available for LM and NMO antennas. MB The MB is Larsen's mirror mount, It's available in two styles: a weather proof NMO mount and a 3/8" hole mount bracket only, Standard in chrome.Low Band/Mid Band 27-136MHz LARSEN'S LOW/MID BAND LINE OFFER THESE SUPERIOR PERFORMANCE ADVANTAGES: * Handles full 200 watts of power * VSWR at 15:1 or less * Heavy-duty base coils ate air wound for lowest RF loss * DC grounded coils (except 27 MHz) * Tough 17-7 stainless steel Kulrod plate whips for maximum radiation efficiency, Available in black or chrome * Optional shock spring that is internally shorted with highly flexible insulated wire to eliminate distortion e Durable Makroblend shells are UV and chemical resistantLow Band/Mid Band 27-136MHz Black NM@ coil only for 27-30 Miz Coif ond chrome whip for for NMO mounts, Coif and black whip for for NMO mounts, 27-30 27-30 Miz. Block coil, chrome whip Miz. Block coil and whipLow Band/Mid Band 27-136MHz Complete NMC antenna and mounting kit, Complete NMO antenna and mounting kit, Black NMO coil only for 30-34 MHz 27-30 Miz. Black coil, chrome whip 27-30 MHz. Block coil ond whipLow Band/Mid Band 27-146MHz oe mS Coif and chrome whip for NMC mounts, Coif and black whip for NM@ mounts, Complete NMC antenna and mounting kif, 30-34 MHz 30-34 MHz 30-34 MHz. Block coil, chrome whipLow Band/Mid Band 27-136MHz te Spun tian nH oe : ' : Complete NMC antenna ond mounting kit, Black NMO coil only for 34-40 Miz Coil and chrome whip for NMO mounts, 30-34 MHz. Black coil ond block whip 34-40 MHzLow Band/Mid Band 27-136MHz a SEEDS Coif and black whip for NAD mounts, Complete NMO antenna and mounting kit for Complete NMO antenna and mounting kit for 34-40 MHz 34-40 Miz. Block coil, chrome whip 34-40 MHz. Block coil ond whipLow Band/Mid Band 27-1436MHz Black NMO coil only for 40-50 MHz Coif and chrome whip for NMO mounts, Coil and black whip for NMC mounts, 49-50 MHz 40-50 MHzLow Band/Mid Band 27-136MHz Complete NMC antenna ond mounting kit for Complete NMO antenna and mounting kit for Black NMO coil only for 47-54 Miz 40-50 MHz. Block coil, chrome whip 40-50 MHz. Black coil and whipLow Band/Mid Band 27-146MHz Coif and chrome whip for NMC mounts, Coil and Black whip for NNO mounts, Complete NMC antenna and mounting kif, 47-54 Maz 47-54 MHz 47-54 MHz. Block coil, chrome whipLow Band/Mid Band 27-136MHz Complete NMC antenna ond mounting kit, 47- NMO 1/4 wove antenna for 52-88 MHz. Black Q 1/4 wove ontenne for LA or LM mounts, 54 MHz. Block coil and whip base, chrome whip 52-88 MHzLow Band/Mid Band 27-136MHz NMO 1/4 wove ontenna for 88-136 MHz. Black @ 1/4 wave antenna for LA or LM mounts, bose, chrome whip 88-136 MizDual Band VHF/UHF KG - Patented low-impedance design in a glass mounted antenna LM - Rugged 5/1 6-24 THDS stud mount for 3/4" hole, low profile, easy to install mount MM - Economical, complete mag mount antenna, compact design NMO - Premium Motorola style 3/4" hole mount * Handles full 200 watts of power (except KG) VSWR at 1.5:1 or less Heavy-duty base coils are air wound for lowest RF loss Tough 17-7 stainless steel Kulrod plated whips for maximum radiation efficiency, Optional shock spring that is internally shorted with highly flexible insulated wire to eliminate distortion Durable Makroblend shells are UV and chemical resistantDual Band VHF/UHF Glass mount dual bond ontenno for 2m/70an Outside coupler ond whip for KG 2/70 glass = 2m/70cm whip antenna for LM mounts amateur rodio frequencies mount antennaDual Band VHF/UHF Complete [M 2m/70cn ontenna and mounting Complete 2m/70cm mag mount antenna Black NMO coil only for 2m/70cm amateur kit. rodio frequenciesDual Band VHF/UHF x aah, = = ot z= sf . . q Amateur 2m/70cm dual band entenne for NAO Amoteur 2m/70cm dual bond antenne for NAO Complete Amateur 2m/70cn dual bond mounts. Block coil. chrome whip mounts. Black coil and whip ontenna for NMO mounts. Black coil, chrome whipDual Band VHF/UHF awn = be ca ol, Oe i i i 3 Complete Amoteur 2m/70cn dual bend lower profile Amatew 2m/70cm dual band Complete lower profile Amateur 2m/70cn antenna and NMO mounting kit. Black bose and antenna with spring for NMO mounts dual bond antenna with spring ond NAD mounting kit whipDual Band VHF/UHF Lower profile Amateur 2m/70cm dual band Complete lower profile Amateur 2m/70an Commercial VHE/UHF dual band black coil only antenna for NMO mounts. Black bose and whip dual bend antenna ond NMO mounting kit. for NMO mounts Black base and whipDual Band VHF/UHF Commercial VHF/UHF dual band antenna for Complete commercial VHE/UHF dual band NMO mounts. Black coil, chrome whip antenna ond mounting kit. Black coif, chrome whipMobile VHF 136 - 174 MHz LARSEN OFFERS VHF ANTENNAS IN 1/4 WAVE, 1/2 WAVE, AND 5/8 WAVE DESIGNS, KG - Patented low-impedance design in a glass mounted antenna LA - 'Dome style 3/8" snap in mount LM - Durable $/16-24 THDS stud mount for 3/4" hole, low profile, easy to install mount MHW - Half wave, no ground plane antenna for SO 239 type mounts (144-174 only) MM/MS - Economical, complete mag mount antenna, compact desi gn NMO - Premium Motorola style 3/4" hole mount OM - Self mounting, no ground plane antenna PHW - Half wave design antenna with flexible radiating element. Mounts on a PL 259 connection, (144-174 only) PO - DC ground, SO-239/UHF type mount antenna COUNT ON LARSEN VHF ANTENNAS TO DELIVER THESE SUPERIOR PERFORMANCE ADVANTAGES: * Handles full 200 watts of power (except KG,MS) * VSWR at 15:1 or less * Heavy-duty base coils are air wound for lowest RF loss * Tough 17-7 stainless steel Kulrod plated whips for maximum radiation efficiency, e Available in black or chrome * Optional shock spring that is internally shorted with highly flexible insulated wire to eliminate distortion * Durable Makroblend shells are UV and chemical resistantMobile VHF 136 - 174 MHz Complete KG glass mount antenna for Outside coupler and whip for KG Complete KG glass mount antenna for 144-160 MHz 144 glass mount antenna, 144-160 MHz 160-174 MHzMobile VHF 136 - 174 MHz Outside coupler and whip for KG 160 glass Inside coupler with coox for KG VHF ontennas Black LA coil only for 144-174 MHz mount antenna, 160-174 MHzMobile VHF 136 - 174 MHz Coil and chrome whip for LA mounts, Coif and black whip for LA mounts, Coil and unploted stainless whip for LA 144-174 MHz 144-174 Miz mounts, 144-174 MHzMobile VHF 136 - 174 MHz Complete LA antenna and mounting kit for 44- Complete LA ontenna and mounting kit for 144- Complete [A antenna ond mounting kit for 144- 174 MHz. Block coil, chrome whip 174 Miz. Black coil ond whip 174 MHz. Block base, unploted stainless steel whip La ete ae UN ma aa ES anal lasMobile VHF 136 - 174 MHz Wideband VHF 1/4 wave for LA mounts Complete wideband VHF 1/4 wove ond Black wideband VHF 1/4 wave for LA mounts {A mounting kitMobile VHF 136 - 174 MHz Complete black wideband VHF 1/4 wove and LA Black LM coil only for 144-174 Miz Coil and chrome whip for LM mounts, mounting kit 144-174 MHzMobile VHF 136 - 174 MHz Coif and black whip for LM mounts, Coif and unplated stainless steel whip for {M Complete LM antenna ond mounting kit for 144-174 MHz mounts, 144-174 MHz 144-174 Miz. Black coil, chrome whipMobile VHF 136 - 174 MHz Complete LM antenna and mounting kit for Complete LM antenna ond mounting kit for Wideband VHF 1/4 wove ontenno for LM 144-174 MHz. Black coil and whip 144-174 Miz. Black coil ond unplated stoinless mounts steel whipMobile VHF 136 - 174 MHz Complete wideband VHF 1/4 wave ontenna and Wideband VHF 1/4 wave ontenna for LM Complete wideband VHF 1/4 wave antenna and LM mounting kit mounts black spring and whip LM mounting kit, black spring and whipMobile VHF 136 - 174 MHz Black 1/2 wave coil only for use with PO/SO- Halfwave coil ond chrome whip for use with Complete VHF 1/4 wave mini mag onfenna, 739 type mounts, 144-174 MHz PO/SO- 239 type mounts, 144-174 MHz 44-148 MizMobile VHF 136 - 174 MHz Complete VHF 1/4 wove mini mag antenna, Black NMC coit only for 144-174 MHz Coif and chrome whip for NMO mounts, 144-174 150-160 MHz MzMobile VHF 136 - 174 MHz 5 : : INA tbh ADELE EMILE ISIE SIN ERSNSS TACOS ASAE AAAA ERE SEAS CCE CCM EEE : = Coif and black whip for NMO mounts, Coif ond unplated stainless steel whip for NWO Complete NMO antenna and mounting kit for 144-174 MHz mounts, 144-174 MHz 144-174 MHz. Black coil, chrome whipMobile VHF 136 - 174 MHz Complete NMC antenna ond mounting kit for = New NMO PCT antenna, 146-174 Miz, block Black NMO 1/2 wave coil only for 144-174 MHz. Black coil and whip coil, chrome whip 144-174 MHzMobile VHF 136 - 174 MHz Half wove coil and chrome whip for NAO Half wove coil ond block whip for NMO mounts, Black wideband coil only for NMO WB 150 mounts, 144-174 MHz 144-174 MHz antenna, 135-174 MHzMobile VHF 136 - 174 MHz Widebond VHF coil and chrome whip for NAD Wideband VHF coil ond black whip for NAD Wideband VHF coil and unplated stainless steel mounts, 135-174 MHz mounts, 135-174 MHz whip for NMO mounts, 135-174 MHzMobile VHF 136 - 174 MHz Complete NMO wideband VHF antenna ond Complete NMO wideband VHF antenna and Complete NMC wideband VHF antenna and mounting kit, 135-174 MHz. Black coil, chrome mounting kit, 135-174 MHz. Block coil ond mounting kit, 135-174 MHz. Black coil, whip whip unploted stainless steel whipMobile VHF 136 - 174 MHz Widebond VHF 1/4 wave antenna for NAD Complete NMO wideband VHF 1/4 wave Wideband VHF 1/4 wove antenna for NAD mounts, 150-170 MHz antenna and mounting kit, 150-170 MHz. Black mounts, 150-170 MHz, black base and spring, base, chrome whip with spring chrome whipMobile VHF 136 - 174 MHz Complete NMC wideband VHF 1/4 wow Self mounting NGP VHF coil with internally Complete self mounting NGP VHF antenna with antenna and mounting kit, 150-170 MHz. Block attached coble for 144-174 MHz intemally ottoched cable for 144-174 MHz. bose and spring, chrome whip Black coil, chrome whipMobile VHF 136 - 174 MHz Complete self mounting NGP VHF antenna with Black 1/2 wave coil for PHW 180 Contenna. A portable mobile antenna with flex cable internally ottoched cable for 144-174 MHz. S0-239 connection whip and SO- 239 connection for 144-174 MHz. Black coif ond whip No ground plane required.Mobile VHF 136 - 174 MHz Black coil only for PO/SO-239 type mounts, Coil and chrome whip for PO./SO-239 type Coif and black whip for PO/SO- 239 type mounts, 144-174 MHz, OC ground mounts, 144-174 MHz, DC ground 144-174 MHz, DC groundMobile VHF 136 - 174 MHz Coif and unplated stainless whip for Complete PO antenna ond mounting kit, Complete PO antenna and mounting kit, PO/SO-239 type mounts, 144-174 MHz, 144-174 Miz. Black coil, chrome whip, 144-174 Miz. Black coil ond whip, OC ground DC ground DC groundMobile 220 - 225MHz LARSEN OFFERS 220 ANTENNAS IN 1/4 WAVE, 1/2 WAVE, AND 5/8 WAVE DESIGNS, AND ARE AVAILABLE IN THE FOLLOWING STYLES: KG - Patented low-impedance design in a glass mounted antenna LA-"Dome' style 9/8" snap in mount IM - Durable 5/16-24 THDS stud mount for 3/4" hole, low profile, easy to install mount MS - Economical, complete mag mount antenna, compact design NMO - Premium Motorola style 3/4" bole mount OM - Self mounting, no ground plane antenna PO - DC ground, SO-239/UHF type mount antenna COUNT ON LARSEN VHF ANTENNAS TO DELIVER THESE SUPERIOR PERFORMANCE ADVANTAGES: * Handles full 200 watts F vow (excep FMS) * VSWR at 15:1 or less Heavy-duty base coils are air wound for lowest RF loss * Tough 17-7 stainless steel Kulrod plated whips for maximum radiation efficiency, e Available in black or chrome Optional shock spring that is internally shorted with highly flexible insulated wire to eliminate distortion Durable Makroblend shells are UV and chemical resistantMobile 220 - 225MHz Complete KG glass mount ontenna for Outside coupler and whip for KG 220 glass Inside coupler with coax for KG 220 ontennas 220-225 MHz mount antenna, 220-225 MHzMobile 220 - 225MHz Black LA coil only for 220-225 MHz Coif and chrome whip for LA mounts , Coil and black whip for LA mounts, 220-225 MHz 220-225 MHzMobile 220 - 225MHz Complete LA antenna and mounting kit for Complete LA antenna and mounting kit for 144- Black LM coil only for 220-225 Miz 220-225 MHz. Black coil, chrome whip 174 Miz. Black coil ond whipMobile 220 - 225MHz Coif and chrome whip for LM mounts, Coif and black whip for LM mounts, Complete [M antenna and mounting kit for 220-225 MHz 220-225 MHz 220-225 MHz. Block coil, chrome whipMobile 220 - 225MHz Complete LM antenna and mounting kit for Complete VHF 1/4 wove mini mag antenna, Block NMO coil only for 220-225 MHz 220-225 MHz. Black coil and whip 220-225 MHzMobile 220 - 225MHz pete eee ete NAS AEE EOE OEE EEE EROS AMARA AAI AY ere gern OBERLIN OE DET ED ROTO ROTO EET AT ROTATE AE ARORA A SW AAS ALACALe AI Coil and chrome whip for NM@ mounts, 220- Coil and Black whip for NMO mounts, Complete NMC antenna and mounting kit for 225 MHz 220-225 MHz 220-225 MHz. Black coil, chrome whipMobile 220 - 225MHz Complete NMO ontenne ond mounting kit for Black 1/2 wove coil only for NMO mounts, Half wave coil and chrome whip for NAD 220-225 Miz. Block coil ond whip 220-225 MHz mounts, 220-225 MHzMobile 220 - 225MHz oo et