Vertical Antenna

What length do I make a vertical antenna to match on 144.39MHz using 75 ohm RG6?

Using about 30 feet of RG6.
Making a vertical ground plane antenna for APRS.
Will be using about 40-45 watts.

The problem I see here is that ham radios are 50 ohm devices. So are the antennas. 144.39 is in the ham 2 meter band. Using 75 ohm cable may not work well. 75 ohm cable is used for TV operation.

NICE GAP EAGLE VERTICAL ANTENNA $229.95

coax coaxial switch antenna ham radio cb vertical horizontal 3 pos pl259 $0.99

HyGain AV640 HF Patriot Vertical Antenna $183.50

Antenna Ranch Vertical Antenna Radial Plate $35.00

OCF/Windom Antenna Vertical Radiator Attachment Kit, 2kw $44.99

JETSTREAM JTB-1 DUAL BAND 144/444 SUPER GAIN VERTICAL BASE ANTENNA LOW PRICE/SH $95.00

JETSTREAM JTB-3 DUAL BAND 144/444 FIBERGLASS VERTICAL BASE ANTENNA LOW PRICE/SH $49.95

80-6 Meter Windom Antenna w/Balun, and Vertical Radiator Attachment Kit, 2kw $99.99

CN32 Vertical hf antenna QRP protable 2M to 40M $95.00

JETSTREAM JTB-4 50/144/444 MHZ BASE VERTICAL ANTENNA HIGH GAIN LOW PRICE $99.95

JETSTREAM JTB5 144/222/444 MHZ VERTICAL BASE ANTENNA HIGH GAIN LOW PRICE $99.00

JETSTREAM JTMHF20 20m MONO BAND HAM VERTICAL MOBILE ANTENNA HAMSTICK STYLE $29.95

JETSTREAM JTMHF15 15m MONO BAND HAM VERTICAL MOBILE ANTENNA HAMSTICK STYLE $29.95

OPEK HVT-600 HF VHF MULTI BAND HAM VERTICAL MOBILE ANTENNA OUTBACKER HAMSTICK $104.95

Vertical, Beam and Triangle Antennas CDROM – PDF $6.99

Antennas – Beams, Dipoles, Vertical, Long Wire – CDROM $9.99

W8AMZ 40m Wire Vertical Antenna HF Dipole G5RV OCD 2KW $38.99

W8AMZ 40m Vertical Wire Antenna HF Dipole G5RV OCD $43.95

220MHz Vertical Base Station Antenna $50.00

2m VHF Vertical Base Station Antenna $55.00

70cm UHF Vertical Base Station Antenna $55.00

2m 70cm VHF UHF Vertical Base Station Antenna $55.00

Cushcraft R7000 Vertical Antenna FLYER $7.95

COMET CHA-250B BROADBAND VERTICAL ANTENNA NO RADIALS!! $409.95

Ground radial ring for vertical antennas, COPPER $19.99

Antenna Vertical Collinear 9.5dBi OMNI Directional $179.00

Nagara V-4Jr 5.2m 7/14/21/28MHz Vertical Antenna $199.95

RFID reader antennas can be a separate component attached. And RFID external antenna can give a better signal range RFID reader so that the tags are read relatively far away. DAILY RFID has recently unveiled a custom DL810 HF RFID Antenna to meet the above demands.

The antenna RFID Reader DL810 offers a compact design that makes it suitable for asset management applications in offices and commercial enterprises, where the rationalization is necessary. The RFID antenna gives the reader long read range up to 90 cm (3 feet) for high frequency RFID tags and can read 50 tags per second.

Moreover, the RFID antenna can be designed in different sizes and shapes for your needs. And RFID Reader DL810 antenna has been integrated successfully in DAILY RFID Jewelry Kit, which is popular with jewelry wholesalers.

RFID reader antennas can be used in a variety of HF management applications beyonds jewelry, including RFID warehouse management, asset management and laundry management applications, etc.

Please visit href = "http://www.rfid-in-china.com/products_701_1.html"> target = "_blank" href = "http://www.rfid-in-china.com/products_701_1.html"> http://www.rfid-in-china.com/products_701_1.html for more information about this RFID antenna DL810.

About DAILY RFID Co., Limited

DAILY RFID Co., Limited ( target = "_blank" href = "http://www.rfid-in-china.com"> http://www.rfid-in-china.com), which belongs to PAN Group Co., Ltd. is the leading company focusing on research and development of EPC / RFID in China.

DAILY RFID specialize in producing probably the world's most extensive line of RFID tags, RFID tags, smart cards and RFID reader (including this handheld RFID reader), which are suitable for any vertical market, and have obtained the National Registry of Certified integrated circuit boards, IC Card Manufacture License and ISO9001 Quality Management System certification. In addition, we own a factory covering an area of 26,000 square meters.

We are committed to providing "Innovative Technology", "superior, cost-efficient product" and "professional, efficient customer service.

About the Author:

technical manager
DAILY RFID Co.,Ltd, which belongs to PAN Group Co., ltd, is the leading company focusing on research and development of EPC & RFID technology in China. We specialize in manufacturing RFID Tag,RFID Label,Smart Card and RFID Reader.

Article Source: ArticlesBase.com – The customized RFID Antennas for RFID Reader