I have had this antenna on my roof since 1992 and it has been problem free in the san francisco fog. Andrew db224a 150 160 mhz omni exposed dipole antenna. Model db224 is a high gain, lightweight, high strength antenna for use in the 8285 mhz band. Wisco international decibel products dipoles db228. The basic configuration of the ribbon jpole is shown in figure 1. A novel dualband singlelayer substrate and diamondshaped antenna is presented. Db222a 150158 mhz 3 db 2bay dipole omni base station. The andrew solutions db5001 antenna side mount kit is for mounting andrew antennas db222, db224, db264, db314, and db315.
One specifies ratio as measured 180 degrees opposite boresight. Pdf 0b224 db224 db224e decibel products dipole antennas decibel products db224. C i r cular pattern db224 has four elements positioned evenly, every 90 degre e s. The element can be centerfed or can be endfed as an unbalanced monopole antenna from a transmission line at the top of the tower, in which case the monopoles ground connection can better be viewed as a second element comprising the tower andor. Mobile antennas v1 free download as powerpoint presentation. Box 569610 dallas, texas 753569610 214 6310310 fax. My options are to put in an amp or replace the antenna to increase the output, but would prefer the additional receive gain by looking at t upgrading a 2bay to a 4bay on a vhf repeater system. Electrical design the antenna is a four stack collinear array designed to pro. About the tutorial this tutorial is meant to provide the readers a detailed description of the antennas used in communication systems. Both db224e antennas are mounted with the ends together, and the phasing harness is terminated at the center. Db222 sp 8635 decibel products dipole db268 db4 db228 db264 text.
Using up to 160 watts on 2 meter ssb, i was able to work 40 states, 4 countries, and well over a 150 grid squares. There was a time, not so long ago, when the db224 was made in the usa. Please call 1800rfparts 18007372787 for availability. Clamps for top mounting are supplied with the antenna but an additional side mount kit model db5001 must be ordered when side mounting the antenna. Have any of you had any experience with the laird yda1504 vhf 4bay dipole. This popular antenna is available with four folded dipoles for high gain and bro a d b a n d w i d t h. A highgain, broadband antenna for 8174 mhz, the 8dipole db228 combines two db224e offsetpattern antennas to provide a 9 dbd gain omni or a 12 dbd gain offset horizontal pattern. Ant150f2 radiates an omnidirectional propagation pattern with moderate gain and wide vertical beamwidth. The antenna was then taken down and modified as shown below, then put back up, and the same test run. Talley stocks a wide variety of infrastructure products. Thus, an antenna with a gain of 3 dbd would have a gain of 5. Side mounting the patterns indicate the typical pattern shape of the antenna side mounted on a tower with an 18 to 24 457.
If you really want a quality high gain wifi antenna. Universal db222a repeater antenna discount twoway radio. Like so many other companies db products, the company, was sold to andrew and then to comscope. Commscopeandrew db228c andrew base station antennas.
The db224 mast is twopiece addresses steves comment on shipping length. Clamps for top mounting are supplied with the antenna. If youre mounting it on a roof with a jmount as i did. The mast could be used for a larger yagi, if the antenna is mounted just over the thrust bearing or top of tower. A harness with n male connection is included along with the db3650s pipe mount kit for 1. Db224e db224 azimuth pattern with respect to halfwave dipole 0 db level omnidirectional top mounted. The db224 is a heavy duty, light weight, high gain antenna. Browse antenna on sale, by desired features, or by customer ratings. After completing this tutorial, you will be able to calculate the parameters of an antenna and decide which antenna suits for which type of application and why. The side mount kit bracket will hold antenna 20 inches away from the tower with 3 inch diameter legs.
This antenna mounting kit features galvanized steel construction and stainless steel hardware. Its not the most expensive 2 meter antenna, but in my opinion, it is a great performer for the price. Db224s have done well over the years, though i have seen the masts bowed due to hurricanes in the south along the mississippi coast while i was in the service years ago. It is factory adjusted and checked for minimum vswr over a wide band of frequencies. Commscope andrew solutions db224e omni, exposed dipole antenna, 8150 mhz, 360 horizontal beamwidth, fixed electrical tilt. The proposed antenna operates in dualband frequency at uhf band from 902 to 920 mhz and ism band from 2. New vhf 3dbd magnet mount mag antenna kit for kenwood tk7302 tk7180 nx700 tk7360. Save on twoway radio antennas trending price is based on prices over last 90 days. Db224 a omni exposed dipole antenna, 150160 mhz, 360 horizontal beamwidth, fixed electrical tilt lbroad response ltwopiece mast for ease of shipping electrical specifications frequency band, mhz 150160.
Db224e omni exposed dipole antenna, 8150 mhz, commscope. This time, at 145 mhz i ran 25 watts into the antenna and got about 1. There are two common meanings for fronttoback ratio fb. Antenna gain relative to a dipole antenna can be expressed in decibels as dbd. Db224e 8150 mhz 6 db 4bay dipole omni base station. The sloper antenna is a slanted vertical dipole antenna attached to the top of a single tower.
It is suitable for mounting to the top or on the side of a tower. There is also the db224s split version of the db224. Leading supplier of wireless communications infrastructure and mobile products. Gain is specified dbi isotropic per ieee definition. It consists of two independent antennas on the same mast. The telewave ant150f2omnidirectional collinear antenna 148174mhz, is an extremely rugged collinear antenna. Commscope andrew solutions db224b omni, exposed dipole antenna, 155165 mhz, 360 horizontal beamwidth, fixed electrical tilt. Broad response 10 mhz bandwidth provides optimum performance in single or multifrequency systems, on both transmit and receive circular patterndb224 has four elements positioned evenly, every 90 degrees around the mast, for omni pattern. L 32 radiation fundamentals ppt free download as powerpoint presentation. B r oad response 10 mhz bandwidth provides optimum perf o r mance in single or multifrequency systems, on both transmit and re c e i v e. Both db224e antennas are mounted with the ends together, and the. This adjustable field omni antenna has a maximum power input of 500 watts. Yagi directional antenna decibel products yagi db797nkl text. A high gain, broad band antenna for 8174 mhz, the 8dipole db228 combines two db224e offsetpattern antennas to provide a 9 db gain omni or a 12 db gain offset horizontal pattern.
From my current 2 dbi antenna to this 10 dbi antenna, i lost about 10 dbi of the signal strength that i had with the 2 dbi antenna. This popular antenna is available with four folded dipoles for high gain and broad bandwidth. I had the 215wb antenna up at 50 feet for over 20 years fed with very low loss coax. Ant150f2omnidirectional collinear antenna 148174mhz.
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