Mhz Radio
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 AIRTRONICS XL 2P TWO CHANNEL RADIO 75710 MHz $1.00 Time Remaining: 1d 16h 3m |
 433MHZ 4 Channel RF Radio Wireless Controller + Remote $8.90 Time Remaining: 21d 20h 57m Buy It Now for only: $8.90 |
 Cessna 182 Flyzone PARTS 4CH ESC receiver servo and Tactic Radio ch 36 725Mhz $29.95 Time Remaining: 2d 19h 6m |
 Traxxas 2405 Bandit XL 5 Buggy TQ 2 Channel 27Mhz AM Radio System w RX $26.95 Time Remaining: 23d 6h 29m Buy It Now for only: $26.95 |
 KRAFT RADIO CONTROL RECEIVER AM 27MHZ 6 CHANNEL NEW PC $40.90 (4 Bids) Time Remaining: 2d 19h 42m |
 Traxxas TQ2 Ch RUSTLER TRANSMITTER + Receiver TX+RX 27 MHZ am radio system new $24.99 Time Remaining: 6d 22h 1m Buy It Now for only: $24.99 |
 RADIO CONTROL XTALS 10 PCS 11155 MHZ D C RXS NEW $9.95 Time Remaining: 2d 19h 42m |
 Traxxas 3602 Advance Auto Parts GRINDER TQ 2 Channel 27Mhz AM Radio System w RX $26.90 Time Remaining: 10d 8h 19m Buy It Now for only: $26.90 |
 KRAFT RADIO CONTROL CHANNEL MASTER TX MODULE 72MHZ $26.50 (4 Bids) Time Remaining: 2d 19h 45m |
 TRAXXAS 4910 T MAXX TRANSMITTER ONLY TQ3 CH 27MHZ RADIO $25.95 Time Remaining: 25d 15h 33m Buy It Now for only: $25.95 |
 BEGIN AIR PARKFLYERS R C 72 MHZ FM PROPORTIONAL RADIO CONTROL SYSTEM 1887 $9.99 Time Remaining: 3d 14h 59m |
 Traxxas TQ 2 Ch Radio Transmitter Micro Receiver 27 mhz stampede rustler slash $24.99 Time Remaining: 6d 22h 3m Buy It Now for only: $24.99 |
 JR MAX 4 CH DIGITAL PROPORTIONAL RADIO CONTROL SYSTEM W CHARGER 72 MHz $12.50 Time Remaining: 4d 15h |
 Futaba 2DR 75Mhz 2 Channel Stick type AM Radio 2 Servos $44.99 Time Remaining: 1d 13h 17m Buy It Now for only: $44.99 |
 JR XF622 6 CH DIGITAL PROPORTIONAL RADIO CONTROL SYSTEM W CHARGER 72 MHz $24.99 Time Remaining: 4d 15h 2m |
 NEW ASSOCIATED XP2 AM 27mhz 2 Chanl RADIO SYSTEM AE $37.99 Time Remaining: 29d 17h 54m Buy It Now for only: $37.99 |
 NIKKO Ferrari radio controlled car 118 scale 27mhz RED $30.00 Time Remaining: 17h 20m Buy It Now for only: $35.00 |
 Tonka Ricochet R C 4 x 4 Vehicle Radio Controlled 27 MHz NEW in BOX $59.00 Time Remaining: 18h 40m Buy It Now for only: $110.00 |
 Futaba R149DP 9 Channel PCM Radio Control Receiver 72MHz FUTL0911 NEW $114.99 Time Remaining: 25d 17h 32m Buy It Now for only: $114.99 |
 Traxxas radio 27MHz $10.00 Time Remaining: 1d 7h 25m |
 New Bright Radio Controlled 17 inch 6 Volt Mastercraft Boat 27 MHz $31.99 Time Remaining: 29d 21h 28m Buy It Now for only: $31.99 |
 RC Creeping Tarantula Grey Orange 6+ R C Radio Control 49MHz Takara NEW $23.99 Time Remaining: 1d 8h 26m Buy It Now for only: $28.00 |
 03020 AM 27Mhz Receiver 02071 sp 3821 HSP Redcat Radio Control Himoto redcat $9.49 Time Remaining: 23d 4h 6m Buy It Now for only: $9.49 |
 Dale Earnhardt Jr Amp Energy Full Function 27 MHz Radio Control Car NEW $19.99 Time Remaining: 1d 9h 34m |
 NEW FUTABA MAGNUM T3PM FM CAR RADIO ON 75MHz CHANNEL 81 TRANSMITTER ONLY $49.99 Time Remaining: 29d 12h 37m Buy It Now for only: $49.99 |
 Sky Hawk Radio Controlled Helicopter 72v 49 MHz $10.00 Time Remaining: 1d 14h 58m |
 RF Radio Wireless Data Transmitter Receiver 433MHz NEW $6.90 Time Remaining: 23d 16h 42m Buy It Now for only: $6.90 |
 FUTABA T2PH RADIO TMAXX JATO RC10GT HPI SAVAGE OFNA LOSI REVO AM 75MHZ $9.99 (1 Bid) Time Remaining: 1d 15h 35m |
 ZOP POWER 111V 2200Mhz 3S lipo batteryFUTABA Radio TX $14.99 Time Remaining: 8d 3h 16m Buy It Now for only: $14.99 |
 Mini RC Radio Control Car 49mhz $9.00 Time Remaining: 2d 7h 23m |
 Blue White 40 MHZ Radio Remote Control RC Mini Racing Speed Boat $11.01 Time Remaining: 15d 9m Buy It Now for only: $11.01 |
 radio control jeep wrangler rubicon 49 MHz $12.00 Time Remaining: 2d 10h 14m |
 Double Horse RC 9099 Transmitter Radio Controller 27mhz R C 9099 TRANS USA $20.99 Time Remaining: 16d 15h 35m Buy It Now for only: $20.99 |
 TRAXXAS TQ 27mhz 2 channel REMOTE CONTROL RADIO NEW $0.99 (1 Bid) Time Remaining: 2d 10h 22m |
 JR Racing XR2i 2 channel AM 27MHz radio system with reciever and manual $70.00 Time Remaining: 2d 11h 53m Buy It Now for only: $90.00 |
 NEW AE Team Associated XP3D 3Ch Radio Receiver RX TX 27MHz FM 3 Channel 3 CH $41.99 Time Remaining: 22d 7h 52m Buy It Now for only: $41.99 |
 Airtronics Blazer Sport 2 channel AM 27MHz radio system with reciever and manual $30.00 Time Remaining: 2d 11h 54m Buy It Now for only: $40.00 |
 Working New Bright 27 MHz RC Radio Control Transmitter $14.99 Time Remaining: 26d 17h 33m Buy It Now for only: $14.99 |
 Jaguar T2P 2 Channel Am 27mhz Radio ACE RC + ESC receiver combo range problem $30.00 Time Remaining: 2d 12h 47m |
 Double Horse RC 9100 Transmitter Radio Controller 49mhz R C Parts 9100 TRANS USA $20.99 Time Remaining: 14d 15h 28m Buy It Now for only: $20.99 |
 associated RC 10 buggy vintage futaba magnum junior am radio 75 mhz w rec $10.10 (5 Bids) Time Remaining: 2d 19h 50m |
 Traxxas 3605 Stampede XL 5 Truck TQ 2 Channel 27Mhz AM Radio System w RX $26.95 Time Remaining: 26d 7h 12m Buy It Now for only: $26.95 |
 9104 20 for Double Horse 3CH RC Helicopter 9104 part Radio receiver 27MHz $17.99 Time Remaining: 2d 21h 54m |
 SYMA S022 RC Transmitter Radio Controller 49mhz R C Parts S022G TRANS USA $20.99 Time Remaining: 22d 22h 24m Buy It Now for only: $20.99 |
 Traxxas TQ3 AM Radio w Traxxas 2215 3 Channel Receiver with 27145mhz crystal $29.38 Time Remaining: 2d 22h 9m Buy It Now for only: $49.24 |
 6CH FM 35 MHZ RC Radio Receiver crystals FOR FUTABA JR $7.97 Time Remaining: 11d 19h 6m Buy It Now for only: $7.97 |
 HARLEY DAVIDSON RADIO CONTROL FAT BOY 49 MHZ Remote Control Replacement RC $9.99 Time Remaining: 3d 14h 38m |
 Futaba Magnum Sport 75Mhz 2 Channel AM Radio w 2 Servos $52.99 Time Remaining: 13d 19h 15m Buy It Now for only: $52.99 |
 Traxxas 27mhz Radio Receiver Receiver box $16.00 Time Remaining: 3d 17h 57m |
 Tactic TTX200 TR210 2 Channel 27Mhz RC Car Truck Radio System $24.99 Time Remaining: 14d 23h Buy It Now for only: $24.99 |
 associated RC 10 buggy vintage futaba magnum junior am radio 27 mhz $0.99 (1 Bid) Time Remaining: 3d 19h 49m |
 HPI Racing 27mhz AM 2 channel Radio and Reciever $5.00 Time Remaining: 3d 21h 38m Buy It Now for only: $10.00 |
 TRAXXAS TQ 27mhz RED CRYSTAL 2CH TRANSMIITTER 4CH MICRO RECEIVER RADIO SYSTEM $24.99 Time Remaining: 27d 13h 47m Buy It Now for only: $24.99 |
 NEW BRIGHT HARLEY DAVIDSON RADIO CONTROL FAT BOY 96 V 49 MHZ $99.00 Time Remaining: 3d 22h 9m |
 Fast USA Double Horse 9104 3CH RC Helicopter Parts Radio Remote Controller 40mhz $19.80 Time Remaining: 25d 2h 16m Buy It Now for only: $19.80 |
 Traxxas TQ2 Ch TRANSMITTER + Receiver 27 MHZ am radio system +2 crystal sets $0.99 (1 Bid) Time Remaining: 4d 13h 5m |
 Radio Remote Control RC Nitro Electric Transmitter Receiver 27mhz AM 2 Channel $36.13 Time Remaining: 9d 7h 33m Buy It Now for only: $36.13 |
 Vintage RADIO CONTROL CAR 27MHz decals decor Computer City Microsoft Acer Bose $9.98 Time Remaining: 4d 18h 44m |
 Losi 27095 Mhz radio controller $15.00 Time Remaining: 25d 12h 33m Buy It Now for only: $15.00 |
 traxxas TQ 27MHz radio system TQ radio and 2016 mico receiverw crystal set $0.99 Time Remaining: 4d 19h 45m |
 Futaba Skysport4 T4VF FM 72 Mhz Four Channel Radio With 2 Servos Futaba Used $24.99 Time Remaining: 20d 14h 17m Buy It Now for only: $24.99 |
 Gold Light Super Racing Radio Control miniature race car 27mHz zipzap BrandNew $5.99 Time Remaining: 5d 8h 6m Buy It Now for only: $7.99 |
 PCF10 FS1000A 433 MHz Wireless Radio Transmitter $2.99 Time Remaining: 12d 16h 59m Buy It Now for only: $2.99 |
 Futaba ATTACK 4 FOUR Channel Radio on Channel 58 72950 MHZ $17.99 Time Remaining: 5d 20h 5m |
 72 MHz FM Crystal sets for JR Radios Single Conversion $10.50 Time Remaining: 22d 2h 46m Buy It Now for only: $10.50 |
 Traxxas TQ 27mhz AM Radio w 3 channel reciever w crystals $17.99 Time Remaining: 5d 21h 42m |
 Hobbico 72MHz Radio Frequency Checker Antenna HCAP0341 $8.99 Time Remaining: 1d 13h 53m Buy It Now for only: $8.99 |
 Cirrus Radio Control System 900 XLC Airplane On Channel 52 72830 MHZ $16.99 Time Remaining: 5d 22h 8m |
 RADIO CONTROL SILVERADO TRUCK RC 27145MHZ $9.99 Time Remaining: 6d 13h 50m |
 Transmitter for Radio Shack Remote Control Mangler Cat No 60 4298 27mhz 49mh $12.00 Time Remaining: 26d 20h 44m Buy It Now for only: $12.00 |
 RADIO SHACK INTRUDER 4 WHEEL DRIVE 49MHZ $25.00 Time Remaining: 6d 15h 32m |
 TRAXXAS 4910 T MAXX RECEIVER 3 CH 27 MHZ RADIO 2215 $23.95 Time Remaining: 25d 15h 33m Buy It Now for only: $23.95 |
 RADIO SHACK BEDLAM RC TANK VERY RARE VINTAGE TRAXX 27 MHZ PLUS 1 EXTRA TRAXX $25.00 Time Remaining: 6d 16h 58m |
 PCR1A 433 MHz Wireless Radio Superregeneration Receiver $2.99 Time Remaining: 12d 16h 55m Buy It Now for only: $2.99 |
 associated RC 10 buggy vintage airtronics rival sport am radio 75 mhz w rec $0.99 Time Remaining: 6d 19h 5m |
 HITECH 2 CHANNEL RADIO CONTROL TRANSMITTER 27145 MHz IN BOX $27.95 Time Remaining: 4d 18h Buy It Now for only: $27.95 |
 Syma Schweizer 300 Radio Remote Control Helicopter 27 MHz RC Chopper plane $19.99 Time Remaining: 8d 18h 20m |
 New RC Radio Remote Control Mini Racing Car 1 64 40MHz MC005 $6.99 Time Remaining: 5d 10h 25m Buy It Now for only: $6.99 |
 Nikko RC Remote Radio Controller49 MHzControl R C Car Boat Airplane Truck $7.99 Time Remaining: 8d 19h 55m |
 ZD GT2 Radio Remote control 2CH 27MHz AM T 10 for RC Car and Boat $27.60 Time Remaining: 21d 11h 1m Buy It Now for only: $27.60 |
 Radio Shack 911 Racer 49 MHz D and AA batteries not included used radio control $24.99 Time Remaining: 12h 41m |
 Team RC Infrared Remote Control Battle Tank 118 Scale 27 MHz Radio Control $28.95 Time Remaining: 2d 20h 45m Buy It Now for only: $28.95 |
 Radio Shack Zip Zaps SE Aston Martin DB5 Goldfinger New in Box 27MHz $49.95 Time Remaining: 1d 16h 44m |
 03020 Receiver sp 3821 Redcat Radio Control Himoto HSP AMAX VTO 2 ch 27MHZ AM $9.78 Time Remaining: 19d 3h 42m Buy It Now for only: $9.78 |
 lot of 2 FUTABA MAGNUM T3PK FM CAR RADIO AND R203HF 3 CHAN FM RECEIVER ON 75MHz $199.99 Time Remaining: 2d 9h 1m |
 Dukes of Hazzard General Lee 1 10 RC Car 27 MHZ DCC 2005 NO RADIO $19.99 (1 Bid) Time Remaining: 2d 11h 56m |
 FUTABA SKYSPORT T4YF FM 72730 MHZ RC AIRPPLANE RC CONTROLLER RADIO CONTROL UNIT $29.00 Time Remaining: 23d 22h 19m Buy It Now for only: $29.00 |
 NEW Futaba Magnum 3PK Super Synthesizer Sys 27MHz FUTK2050 Digital R C 3ch Radio $128.50 (2 Bids) Time Remaining: 3d 11h 51m |
 Duratrax 75mhz Radio Frequency Checker DTXP3110 $6.81 Time Remaining: 5d 1h 36m Buy It Now for only: $6.81 |
 ZIP ZAP CHRYSLER PT CRUISER RADIO CONTROL CAR 27 MHZ $0.99 (1 Bid) Time Remaining: 3d 15h 24m |
 Crystals AM 27380 MHz for Futaba Tamiya Sanwa radio systems 110 RC $10.20 Time Remaining: 7d 21h 22m Buy It Now for only: $10.20 |
 ZIP ZAPS HONDA CIVIC COUPE RADIO CONTROL CAR 27 MHZ $0.99 (1 Bid) Time Remaining: 3d 15h 32m |
 Pro Ride Skateboard Radio Controlled 27mhz HMR 38 Skateboarding Figure $15.99 Time Remaining: 22d 16h 4m Buy It Now for only: $15.99 |
 ZIP ZAPS PORSCHE 911 TURBO RADIO CONTROL CAR 49 MHZ $0.99 (1 Bid) Time Remaining: 3d 15h 36m |
 Traxxas 3705 Rustler XL 5 Truck TQ 2 Channel 27Mhz AM Radio System w RX $27.90 Time Remaining: 10d 4h 48m Buy It Now for only: $27.90 |
 Malibu Wakesetter VLX Radio Control Boat Blue 49mhz NIB $45.99 Time Remaining: 5d 14h 24m |
 433MHz Radio Wireless Control Toggle Version $10.99 Time Remaining: 8d 19h 34m Buy It Now for only: $10.99 |
 2 AE Associated XP2 Transmitter 27mhz Radios 2ch futabahitecjrkoairtronics $9.99 Time Remaining: 5d 17h 26m |
 NICE FUTABA SKYSPORT T6VA SIX CHANNEL FM RADIO 72MHZ ON CHANNEL 36 $39.99 Time Remaining: 23d 13h 16m Buy It Now for only: $39.99 |
 Futaba 6XA Super PCM FM 72MHz Radio System New $0.01 Time Remaining: 9d 17h 15m Buy It Now for only: $225.00 |
Mhz Radio
CB Radio vs. GMRS Radio: Compare Before You Buy
Everyone knows about CB radios; but there are alternative 2-way radios on the market for consumers. FRS and GMRS handie-talkies and mobiles are also favorites of many. MURS is also an option; similar to GMRS and license free, it's main constraint is that there are merely 5 channels and is mainly restricted to handie-talkies at the time of this writing.
What's the difference between them?
Licensing:
-FRS & MURS handies as well as CB radios are license free.
-The FCC requires you to buy a license for GMRS use. Not exactly cheap at $85, the license however, will cover your whole family.
Range:
Range is contingent on many factors, but the biggest is whether you're using a base unit, a mobile, or a walkie-talkie. So why do the radio type matter? Let's look at them.
-Walkie-talkie (also known as handie-talkie or handie): FRS will have the shortest range here, due to their 500 mW (half a watt) maximum output power and fixed antenna. Next shortest in range will be the GMRS & MURS handie, which will be close to that of a CB walkie-talkie.
-The mobile will have more useful range than the handies, and can easily outshine them if equipped with a half decent antenna. Only CB radios have something called Single Sideband (SSB), which will have much better range than a GMRS or AM only CB radio.
-Base units of both services will both have very good range; On the base or the mobile, GMRS is permitted 50 watts output; CB is limited to 4 watts.
Antennas:
-CB antennas are much bigger than GMRS antennas. The reason for this is the frequencies involved; CB makes use of 27 Mhz, and GMRS is on 462-467 Mhz. The higher the Mhz number, the smaller the antenna. As an example, a full quarter-wave CB mobile antenna is typically around 9 feet in length. A quarter-wave GMRS antenna is right around 6 inches. Base antennas for both CB and GMRS are available in a wide variety of configurations, from basic quarter-wave to elaborate multi-element directional, the latter providing much greater range.
Channels:
-This category is a no brainer; CB has 40 channels available.
-MURS is 5 channels, FRS handies have 7 channels allocated, while GMRS has 15 channels. FM mode is used for FRS and GMRS.
-GMRS can use repeaters, which FRS, MURS and CB cannot. a repeater is simply an "access point" which will take your signal, boost it, and rebroadcast it at the same time you are transmitting. However, repeaters and not something you come across easily. Also, very few GMRS handies have split capability, which is necessary for repeater use. Unless you plan to build it yourself, look at around $1K for a repeater. But if you can get the money, a GMRS repeater really increases your range and talk distance. However, private repeaters are not permitted on GMRS; it must be shared with everyone.
Price:
-FRS once won this category hands down, with many FRS handies available dirt cheap. But FRS only handies are getting hard to find.
-MURS handies are limited in availability principally due to lack of demand and models made just for this service seem to have only one brand name, Dakota, which is priced $50 and up.
-GMRS handies vary in range widely, depending on model and options. Mobiles are mostly commerical UHF radios which are tuned to work on GMRS channels.
-CB radios have the biggest variety of prices and configurations of all three radio services.
Summary
If all you need is a walkie-talkie, your best bet is a nicely equipped 3 to 5 watt GMRS handie-talkie. i.e., a pair of Cobra GMRS 5-watt walkie-talkies with charger will cost around a C-note. If you want a comparable pair of CB walkie-talkies, price will be similar, but the handies are much bigger.
However for mobile use, it's not so clear! With a decent antenna, GMRS and CB mobiles will give very similar range.
But in the base arena, it's no contest: the CB can't be beat. GMRS can beat CB range with a repeater and/or highly directional antennas, but again, this is getting into "hobbyist" areas. It all depends... how much do you want to spend?
About the Author
More info and current best prices of CB, FRS & GMRS radios are at http://unidencbradio.com and http://gmrsfrequencies.com
What is the energy of a photon of a radio transmission that has a frequency of 98.3 MHz?
What is the energy of a photon of a radio transmission that has a frequency of 98.3 MHz
I got 6.51E43J, but it says it wrong.
"What's new?"
"E over h"
Get it? nu?
If not, ν, or nu, is the frequency of a photon, and its energy is given by E = hν. (h is Planck's constant).
BTW I got 6.513x10^-26. Is there a chance you used h=6.6E34 instead of E-34?
Citizen Band Radio - 27.305 Mhz Repeater?
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