cb galaxy radio
X-4 CB RADIO ANTENNAS?
I AM CHOOSING TO RUN 4 ANTENNAS, I HAVE BEEN TOLD THIS WILL AFFECT SWR?
if i run them straight into the radio will it make a bit of difference? two 4 foot firestiks in front,
an two 2 foot fiberglass whips in the rear?
anyone have any comments or experience regarding this type of setup? galaxy 959
i have found this to be correct, my radio was transmitting to another city with a small rooftop antenna. i have 2 adjustable firestiks i will try adjusting those but i see the us military uses multiple antennas what is the difference?
……………..
THANKS FOR THE UPDATE on the 4 square ill remember that name…i have a ground plane pl259 connector that i will use, i do have trailers too so i can connect them to the trailers an that might make a difference which is great news! thanks alot guys for your input just waiting to receive them in the mail now!
yeah, to probably make this work without a lot of expense do this:
make three 200 ohm dummy loads by using a 200 ohm 2 or 3 watt (not wirewound) resistor soldered to a PL259
Use adjustable cb antennas
install one antenna, and the 3 dummy loads in to the other 3 mounts
adjust that antenna for lowest SWR
remove one of the 200 ohm dummy loads, and install the 2nd antenna
adjust that antenna for lowest SWR
repeat for the 3rd & 4th antennas
as long as the SWR stays below 2.0:1, you should be OK
IF the SWR stays over 2.0, change coax to 75 ohm or 100 ohm and start over
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Cobra Dynascan 23 Channel AM CB Radio Model 21 ~(S1532)~ $9.99 |
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Cobra 19 DX III 40-Channels Base CB Radio~(S1545)~ $9.99 |
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Cobra 19 Ultra II Base CB Radio~(S1546)~ $9.99 |
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Cobra 29LX CB Radio w/4-Color LCD Display Model 29LX #29LX $149.99 |
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Vintage Midland 77-861 Portable Transceiver 40 Channel CB Radio Microphone Mic $19.99 |
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FRANCIS CB RADIO ANTENNA MOUNTING STUD STAINLESS STEEL $4.99 |
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CB or Ham Radio Crystal Holder 1140 – 14.9800 MHZ 14980 KC $3.98 |
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STOCK Zinc CB Ham Radio Cobra 148 Export DX Galaxy Connex Replacement Bracket $7.29 |
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10 OHM 1/4 Watt Resistors 5% Tolerance (CB Radio Talk Back) ARCHER 20 each $2.99 |
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10 OHM 1/4 Watt Resistors 5% Tolerance (CB Radio Talk Back) ARCHER 20 each $2.99 |
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Vintage Lafayette Telsat SSB-25A CB/SSB Transceiver Radio $86.00 |
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STOCK CB Ham Radio Cobra 148 Export DX Galaxy RCI Ranger Connex Black Bracket $7.35 |
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Midland 75-785 40-Channel Handheld Portable CB Radio $34.70 |
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2 CB HAM RADIO ANTENNA 3 WAY ALUMINUM MIRROR MOUNT BRACKET 3/8 X 24 STUD SO239 $16.00 |
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(TWO) COBRA 2 WAY PORTABLE 40 CHANNEL CB RADIOS HH-35 Walkie Talkies $19.50 |
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Uniden PRO510XL 40-Channels Base CB Radio $17.00 |
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18′ CB RADIO ANTENNA CO-PHASE COAX CABLE ~TERMINATOR~ HERMETICALLY CONNECTOR NEW $14.99 |
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COBRA FULL FEATURED DELUXE CB RADIO 1 Year manufacturer warranty $120.00 |
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CB or Ham Radio Crystal Holder 748 – 12.2900 MHZ 12290 KC ALAN $3.98 |
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CB or Ham Radio Crystal Holder 2013 – 11.2750 MHZ 11275 KC TEW $3.98 |
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CB or Ham Radio Crystal Holder 2306 – 11.4500 MHZ 11450 KC Alan $3.98 |
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CB or Ham Radio Crystal Holder 1595 – 8.83666 MHZ 8836.66 KC CH-1R S15L $3.98 |
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METROTEK MUSTANG II CB Radio $125.00 |
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CB/Ham Radio mounts for 03-09 Dodge Ram Trucks $55.00 |
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CB or Ham Radio Crystal – 1633 – 28.8750 MHZ – 28875 KC – HC-6/U .050 Pins $4.00 |
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VINTAGE CLARION HANDIE 12 VOLTS DC POWER PACK W/ BOOSTER ANTENNA CB RADIO PART $6.00 |
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NIB Handheld Portable Uniden CB Radios PRO 340XL – 2 Set – 5 Mile Range $39.00 |
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SEARS 23 CB TRANSCIEVER 23 CHANNEL RADIO $26.99 |
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Prominent MS-24 23CH Mobile Transceiver CB Radio PA with Microphone $9.99 |
Mobile Phones Explained: Why Can’t We Use Mobile Phones in Hospitals and on Planes?
It has become so common for us to experience some kind of electromagnetic interference daily that many of us have ceased to notice. For example, when your mobile phone is near a computer, radio, CD player or laptop, you may hear a familiar electrical tattoo come through your speakers. Similarly, you might have heard a truck’s CB radio come in over your car’s FM station when it drives by.
The electromagnetic field from your mobile phone is created by the simple flow of electricity through its wiring and components. Any electronic device acts in the same way, radiating at the frequency at which the device operates. This ranges from 133Mhz or more for a PC to about 1Mhz for an AM radio. The latest smartphones like the iPhone 4, Samsung i9000 Galaxy S and HTC Desire all have new generation processors that operate at 1GHz.
Given that devices like your car radio, baby monitor, mobile phone and computer speakers work on different signals or radio bands, the crossover of signals should not happen. However, transmitters do tend to transmit on harmonic side bands at lower power – and so, your car’s FM radio picks up the CB waves transmitted by the truck though they are attuned to different radio bands.
With mobile phones, the wires in your electronics act like an antenna and pick up transmissions in the audible range sent out from your mobile phone.
These phenomena of crossed wires are a minor nuisance in our daily lives, but on planes and in hospitals, your mobile phone signal can have a deep and hazardous impact. In hospital, much equipment is networked wirelessly, transmitting data back to nursing stations using antennas.
Using your mobile phone around this equipment can interrupt the exchange of important data wirelessly – even if your mobile phone is not actively receiving or sending texts or phone calls. Mobile phones and their signal towers “handshake” with each other regularly and this quick burst of data transmitted is enough to interrupt the transmission of other data in the area.
In an airplane, though the risk of mobile phones differs technically from hospitals, the effect is the same – interrupting the messages sent between pieces of equipment on the plane and with the ground. An airplane uses radios for a range of purposes – pilots talk to grounds control and air traffic control (ATC); they use radar; radios communicate the plane’s position to ATC computers; navigate direction with gyros and compasses.
All this equipment is adjusted to send and receive data at specific frequencies. However, when a mobile phone is turned on, it can transmit with enough strength to overlap with the plane’s radio frequencies. Similarly, if wires on the plane have damaged protection, the wire could behave like your computer’s speakers and pick up signal like an antenna.
About the Author
Pandora Devine is a freelance copywriter and has written this article on behalf of Orange, one of the UK’s biggest network providers.
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Cobra Dynascan 23 Channel AM CB Radio Model 21 ~(S1532)~ $9.99 |
|
|
Cobra 19 DX III 40-Channels Base CB Radio~(S1545)~ $9.99 |
|
|
Cobra 19 Ultra II Base CB Radio~(S1546)~ $9.99 |
|
|
Uniden PRO510XL 40-Channels Base CB Radio $5.01 |
|
|
Cobra 29LX CB Radio w/4-Color LCD Display Model 29LX #29LX $149.99 |
|
|
2 Pin Female Microphone Plug Ham Radio CB Mic $1.20 |
|
|
SIDEBANDER IV SBE-27CB/A SSB/AM CB RADIO $154.99 |
|
|
Vintage Midland 77-861 Portable Transceiver 40 Channel CB Radio Microphone Mic $19.99 |
|
|
FRANCIS CB RADIO ANTENNA MOUNTING STUD STAINLESS STEEL $4.99 |
|
|
Midland Model 1000 CB Radio $9.99 |
|
|
CB or Ham Radio Crystal Holder 1140 – 14.9800 MHZ 14980 KC $3.98 |
|
|
Vintage Motorola TSN6005a Speaker for Police Car, Ham, or CB Radio Ca. 1960s $10.50 |
|
|
STOCK Zinc CB Ham Radio Cobra 148 Export DX Galaxy Connex Replacement Bracket $7.29 |
|
|
10 OHM 1/4 Watt Resistors 5% Tolerance (CB Radio Talk Back) ARCHER 20 each $2.99 |
|
|
New Radio Shack Handheld Weather Alert CB Radio 21-1679 NOAA $54.95 |
|
|
10 OHM 1/4 Watt Resistors 5% Tolerance (CB Radio Talk Back) ARCHER 20 each $2.99 |
|
|
Vintage Lafayette Telsat SSB-25A CB/SSB Transceiver Radio $86.00 |
|
|
STOCK CB Ham Radio Cobra 148 Export DX Galaxy RCI Ranger Connex Black Bracket $7.35 |
|
|
Midland 75-785 40-Channel Handheld Portable CB Radio $34.70 |
|
|
2 CB HAM RADIO ANTENNA 3 WAY ALUMINUM MIRROR MOUNT BRACKET 3/8 X 24 STUD SO239 $16.00 |
|
|
(TWO) COBRA 2 WAY PORTABLE 40 CHANNEL CB RADIOS HH-35 Walkie Talkies $19.50 |
|
|
Uniden PRO510XL 40-Channels Base CB Radio $17.00 |
|
|
18′ CB RADIO ANTENNA CO-PHASE COAX CABLE ~TERMINATOR~ HERMETICALLY CONNECTOR NEW $14.99 |
|
|
COBRA FULL FEATURED DELUXE CB RADIO 1 Year manufacturer warranty $120.00 |
|
|
CB or Ham Radio Crystal Holder 748 – 12.2900 MHZ 12290 KC ALAN $3.98 |
|
|
CB or Ham Radio Crystal Holder 2013 – 11.2750 MHZ 11275 KC TEW $3.98 |
|
|
CB or Ham Radio Crystal Holder 2306 – 11.4500 MHZ 11450 KC Alan $3.98 |
|
|
CB or Ham Radio Crystal Holder 1595 – 8.83666 MHZ 8836.66 KC CH-1R S15L $3.98 |
|
|
METROTEK MUSTANG II CB Radio $125.00 |
|
|
CB/Ham Radio mounts for 03-09 Dodge Ram Trucks $55.00 |
|
|
CB or Ham Radio Crystal – 1633 – 28.8750 MHZ – 28875 KC – HC-6/U .050 Pins $4.00 |
|
|
VINTAGE CLARION HANDIE 12 VOLTS DC POWER PACK W/ BOOSTER ANTENNA CB RADIO PART $6.00 |
|
|
NIB Handheld Portable Uniden CB Radios PRO 340XL – 2 Set – 5 Mile Range $39.00 |
|
|
SEARS 23 CB TRANSCIEVER 23 CHANNEL RADIO $26.99 |
|
|
Prominent MS-24 23CH Mobile Transceiver CB Radio PA with Microphone $9.99 |
