Coax Antenna
TV Antenna PreAmp > Amplifier Coax Length?
I just bought a Phillips UHF/VHF/FM PreAmp (Model SWS2083W/17) for my antenna. What is the max. length of coaxial (75 ohm) or twinlead (300 ohm) cable I can have between the PreAmp at the antenna and the Amplifier that plugs into the wall outlet?
Lots of variables there. It depends on:
1) How good the cable is (how lossy it is)
2) What frequencies you are trying to receive (the higher the frequency, the more the loss in the cable)
3) How noisy the pre-amp is.
4) How strong the stations are.
5) How good the antenna is, and how well it’s pointed
6) Whether you have line-of-sight on the transmitting towers.
7) How far away you are from the transmitting towers.
How good your TV receiver is
Sorry for no “pat” answers… you just have to do the measurements and/or run the numbers if you can get ahold of them.
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80 Ft UHF VHF Mhz Ghz LMR-400 RF Antenna Coax Cable N M $97.95 |
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3ft LMR-400 Antenna Jumper Coax Cable N & RP-TNC male 3 $12.95 |
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10 ft LMR-400 Jumper Ham CB UHF VHF Coax RF Radio Cable $22.95 |
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2 ft LMR-400 Jumper Ham CB UHF VHF Coax RF Radio Cable $9.95 |
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8ft LMR-400 Antenna Jumper Coax Cable PL-259 Connectors $19.95 |
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3ft LMR400 Router Antenna Coax Cable N plug RP-SMA plug $12.21 |
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35 ft LMR400 Scanner Antenna Coax Cable N male to BNC $49.98 |
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9 FOOT CO-PHASE CB RADIO COAX CABLE, 2 ANTENNAS, NEW $8.99 |
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18 FOOT CO-PHASE CB RADIO COAX CABLE, 2 ANTENNAS, NEW $11.99 |
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1 ea. RELCOMM, SMA COAX RELAY SWITCH SPDT, 28 VDC, RDS-2S1A6, MICROWAVE, USED $20.00 |
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Antenna Cable Male M/M SMA Plug Coax Connector Adapter $1.80 |
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2pcs RF Antenna CATV TV FM Coax Cable PAL Male Jack Plug Connector Adapter $2.00 |
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Antenna Interface RF Coax Cable Male Plug Adapter 5 Pcs $6.52 |
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ProComm DUAL 2 ft Fiberglass CB Antennas with 3 way Mounting Base & Coax White $34.00 |
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ProComm DUAL 4 ft Fiberglass CB Antennas with 3 way Mounting Base & Coax White $34.00 |
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COAX ANTENNA SWITCH W/ RG8X JUMPER- 2-POS, 1000W 1.8 TO 600 MHZ.- WORKMAN CS201 $27.95 |
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18 FOOT CLEAR CB RADIO COAX CABLE $12.99 |
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12 FOOT CLEAR CB RADIO MINI 8 COAX CABLE $11.99 |
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ProComm DUAL 3 ft Fiberglass CB Antennas with 3 way Mounting Base & Coax White $34.00 |
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NMO Mount BROWNING Antenna Trunk Mount With Coax #BR311 $19.99 |
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ProComm DUAL 2 ft Fiberglass CB Antennas with 3 way Mounting Base & Coax Black $34.00 |
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18 FOOT GREY MINI 8 CB RADIO COAX CABLE $9.99 |
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9 FOOT GREY CB RADIO MINI 8 COAX CABLE $8.99 |
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2 Lot 12Ft RG-8X Mini 8 Coax PL-259 Male to Male Ham Radio Antenna Jumper Cable $12.50 |
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RF Antenna CATV TV FM Coax Cable PAL Female Jack Plug Connector 2pcs $3.79 |
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GODAR EURO R8A UNIVERSAL EUROPEAN GERMAN RADIO COAX ANTENNA ADAPTER $4.99 |
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GODAR EURO R10A UNIVERSAL EUROPEAN GERMAN RADIO COAX ANTENNA TERMINAL ADAPTER $5.99 |
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OPEK 3/8-24 Antenna Stud Mount w/ 17FT RG-58 coax cable & PL-259 PS-15 $14.95 |
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GODAR R-15A UNIVERSAL QUICK CONNECT RELEASE RADIO COAX ANTENNA TERMINAL ADAPTER $5.99 |
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Coax Connector BNC-F Jack to SMA-M Plug Antenna Adapter $5.87 |
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6ft LMR400 Antenna Jumper Coax Cable BNC M to BNC F $15.96 |
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Antenna Interface RF Coax Cable Male Plug Adapter 5 Pcs $6.67 |
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BELDEN 89913 low loss RG8/U 50ohm coax air cable 200′ feet antennae $600.00 |
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2 Linears 2 Antennas and coax $700.00 |
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Belden 3′ GREY B8×3G CB Ham Coax Antenna Cable $9.45 |
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RF Male CATV TV FM Antenna Jack Coax Plug Connector $3.02 |
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5 Lot 6Ft. RG-8X Mini 8 Coax PL-259 Male to Male Ham Radio Antenna Jumper Cable $22.50 |
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2′ ANTENNA KIT W/ MTS & COAX WHITE DUAL CB TOP LOADED FOR COBRA & OTHERS $19.95 |
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RED DUAL 3/8-24 STANDARD CB TOP LOADED 3′ ANTENNA KIT W/ MTS & COAX $29.95 |
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BLACK DUAL CB TOP LOADED 3′ ANTENNA KIT W/ MTS & COAX $24.95 |
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500 WATT BLACK DUAL CB FIBERGLASS 3′ ANTENNA KIT W/ MOUNTS & 9′ COPHASE COAX $39.95 |
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3′ ANTENNA KIT W/ MTS & COAX WHITE DUAL CB TOP LOADED FOR COBRA & OTHERS $20.00 |
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RED TWIN DUAL CB TOP LOADED 3′ ANTENNA KIT W/ MTS & COAX $22.95 |
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3′ ANTENNA KIT W/ MT & COAX WHITE SINGLE CB TOP LOADED FOR COBRA & OTHERS $12.95 |
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4′ ANTENNA KIT W/ MTS & COAX WHITE DUAL CB TOP LOADED FOR COBRA & OTHERS $24.95 |
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BLACK SINGLE CITIZEN BAND TOP LOADED 24″‘ ANTENNA KIT W/ MT & COAX $12.00 |
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WHITE SINGLE 3/8-24 STANDARD CB TOP LOADED 3′ ANTENNA KIT W/ MT & COAX $12.95 |
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500 WATT BLACK DUAL CB FIBERGLASS 4′ ANTENNA KIT W/ MOUNTS & 9′ COPHASE COAX $39.95 |
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Antenna Cable Male M/M SMA Plug Coax Connector Adapter $1.50 |
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TRAM 3265 UHF 5″ MAGNET MOUNT WITH 17′ RG58 STRANDED CENTER COAX & PL259 CONN. $24.99 |
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100 FT DAVIS RG-8X LOW LOSS 50 OHM ANTENNA COAX RG 8X $54.75 |
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Comet Antenna 3D4N Coax Cable Male to Female N Car Van Mobile Ham Amateur Radio $13.99 |
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MFJ 1704 – 4 Position Coax Switch – New $77.95 |
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5″ MAGNETIC CB ANTENNA MOUNT WITH 17′ OF COAX, NEW $9.99 |
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High quality fm transmitter GP antenna 26ft coax cable $55.00 |
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Workman Model CS201 2 Position Heavy Duty 1KW Coax Antenna Switch CB Radio Cobra $19.99 |
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BARJAN 9′ RG58AU COAXIAL COAX CABLE FOR CB RADIO ANTENNAS BLACK PL-259 CONNECTOR $4.99 |
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Times LMR-400 Coax RF Ham CB Antenna Cable 25ft N PL259 $37.93 |
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38″ VHF Marine Antenna With Coax & connecter WSP-1600 $27.91 |
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Hustler DCL Base Station Scanner Antenna w/50′ Coax NEW $44.95 |
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Times LMR Coax RF Ham CB Base Beam Antenna Cable 75ft $92.95 |
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3ft LMR400 GPS Antenna Jumper Coax Cable BNC $12.95 |
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100 ft Times LMR-400 Coax 6 Meter Base Tower VHF HF Antenna Cable N male & PL259 $114.95 |
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3FT RG-58 ANTENNA COAX PATCH CABLE w/ MOLDED PL-259s $8.95 |
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LMR400 Ham CB Antenna Coax Cable 50 ft PL-259 Connector $67.65 |
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LMR-400 Coax 6 Meter Base Tower VHF Antenna Cable 35ft $44.95 |
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BELDEN 100ft GREY B8×100G CB Ham Coax Antenna Cable $55.98 |
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Belden 12′ GREY B8×12G CB Ham Coax Antenna Cable $13.77 |
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Belden 75ft GREY rg8x CB Ham Coax Antenna Cable **NEW** $46.00 |
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BNC-M to SMA-F Radio Antenna Coax Adapter Kenwood Cable $7.03 |
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NEW 75 FT DAVIS BURY-FLEX 50 OHM ANTENNA COAX CABLE $64.95 |
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NEW 500 FT DAVIS BURY-FLEX 50 OHM ANTENNA COAX CABLE $399.95 |
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NEW 50 FT DAVIS BURY-FLEX 50 OHM ANTENNA COAX CABLE $59.50 |
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NEW 150 FT DAVIS BURY-FLEX 50 OHM ANTENNA COAX CABLE $124.95 |
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18′ CB RADIO ANTENNA CO-PHASE COAX CABLE ~TERMINATOR~ HERMETICALLY CONNECTOR NEW $9.99 |
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100Ft RG-8X Mini 8 Coax PL-259 Male to Male Amateur or Ham Radio Antenna Cable $29.95 |
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WORKMAN 3/8-24 MOLDED BODY PILLAR SIDE ANTENNA MOUNT 12FT RG-58 COAX CABLE PSM2 $26.95 |
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NEW Coax Lightning Arrestor, Arrester, Protector VHF UHF Ham CB PD FD Radio $13.00 |
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Times LMR-400 Scanner Tower Antenna Coax Cable 35ft QRP $49.95 |
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(2) #43 WHITE SNAP-ON FERRITE CORE 25-300 MHZ RG8X -58-59-LMR24 0COAX $6.25 |
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LMR-240 RG8X HAM Coax CB Coaxial UHF male & female PL259 SO239 Antenna Cable 6ft $13.95 |
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BARJAN 12′ RG58AU COAXIAL COAX CABLE FOR CB RADIO ANTENNAS BLACK PL259 CONNECTOR $4.99 |
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BNC Male to UHF PL259 Female Antenna RF COAX Adaptor,76 $4.99 |
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8ft LMR-400 Coax Cable PL-259 N Female Connectors $19.95 |
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18′ HEAVY-DUTY CB RADIO COAXIAL CO-PHASE COAX CABLE 2 ANTENNAS HOOK-UP ~NEW~ $9.99 |
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5 Lot 6Ft. RG-8X Mini 8 Coax PL-259 Male to Male Ham Radio Antenna Jumper Cable $22.50 |
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28″ CB RADIO ANTENNA MAGNET MOUNT CENTER LOADED WATERPROOF COIL 10′ COAX ~66710~ $9.99 |
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NEW 100 FT DAVIS BURY-FLEX 50 OHM ANTENNA COAX CABLE $95.00 |
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1000W – 1.8 TO 600 MHZ – Coax Antenna SWITCH – 2 position – Opek CX-201U $29.75 |
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COPHASE COAX for CB Radio Dual Antennas 18 ft per side – Workman CP18PLPL $11.75 |
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15″ ANTENNA SCANNER KIT BAND WIDTH MIRROR MOUNT COAX $9.99 |
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GODAR R15A F COAX CLIP RADIO COAX QUICK ADD RELEASE ANTENNA TERMINAL ADAPTER $6.99 |
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Right angle coax connector (sold 4 per) $14.00 |
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3′ BLACK DUAL CB ANTENNA KIT WITH BRACKETS & COAX CABLE $35.99 |
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3′ WHITE DUAL CB ANTENNA KIT WITH BRACKETS & COAX CABLE $35.99 |
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2 Lot 20Ft. RG-8X Mini 8 Coax PL-259 Male to Male Ham Radio Antenna Jumper Cable $15.00 |
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4′ BLACK CB ANTENNA KIT WITH BRACKET & COAX CABLE $17.99 |
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VHF Marine Antenna 38″ With Coax & connecter WSP1600 $26.91 |
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PL259 Rg 8u 213 Silver Connector Antenna Coax Coaxial Adapter Connector Bird 43 $2.50 |
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PL259 Rg 8u 213 Connector Antenna Coax Coaxial Adapter Connector / For Bird 43 $1.99 |
What if you do not have Line-Of-site to the exterior cell phone signal?
What if you have no line site for cell phone signal outside?
1. If you have no cell phone signal at all, these days that usually means that the signal is being blocked by a hill, trees, buildings or power lines.
2. If there is a line really blocked vision or no cell phone signal for any reason, you will usually see the dreaded "No Service" after notice.
3. A cell phone booster / repeater will not work if there is a blocked line of sight to the external signal. A thousand times zero is still zero.
4. If you have no cell phone signal at all, first find the last place near the building where he was a good, two-three signal bar. Then look around. If there is a hill between good cell phone signal and the building of application, you have to get a cell phone antenna as high enough to get over it so that there is a clear line of sight between the building and good signal. You do not need line of sight to the tower only good cell phone signal.
5. Now, if you stand on top of the hill that is blocking your line of sight and is obtained a good sign, probably in luck. Years ago I learned that in these cases, if the crest is too high to raise a cell phone antenna above all is not necessarily lost.
6. If there is a sign at the top of the hill, is likely to meet him, but too high to help you in your building.
7. If there is a good cell phone signal on top of the hill, then rises a high gain Yagi antenna cell phone such as 301 124 Wilson, as high as reasonably possible, then point it toward the top of the ridge. This may mean that you need to bend the pole of the antenna, but the car will do that to your local muffler shop.
8. If you do not lift the front of the yagi antenna over 30% above the back end, we will be functional for its purpose.
9. If you get three or more bars of signal strength using the Yagi antenna Wilson 301 124, a signal will the amplifier can be increased, if not used more than 50 feet of LMR400 coaxial cable between the antenna and amplifier.
10. If trees are blocking the line of sight and are not part of a forest, you may luck. Not one of our clients in UnwiredSignal.com has needed to raise an antenna completely just above an area of just several trees, to our knowledge. We tell customers every day who will be able to find a focus point where the signal comes through the trees somewhere above the midpoint of the tree height.
11. This is because most trees conical shape in about two thirds the height of the trees. If there are several trees together, you should see "thin" at about that point. One way or another you should be able to aim a yagi antenna through a sweet spot in most lines of trees.
By David Jones http://www.UnwiredSignal.com
About the Author
UnwiredSignal.com Questions? Call us at the store in Dallas, TX anytime from 9 AM to 6 PM Monday-Friday. We are happy to help you. 214-774-2588 or toll free 888-713-1243.
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