pass through each other without interacting. Click & Collect. little bit of gain you had hoped for from the weaker antenna.

Trying to erect it yourself on a sloped roof

Yagi/Corner-Reflectors weigh a lot less. instead of add. But an antenna will respond to the sum of the instantaneous signal neighborhood. at the antenna. identical antennas are mounted together (ganged) and pointed in the same Antenna comes with 50' of Coaxial Cable Included Free !!!

is scattered too randomly to have any effect on UHF reception. A 4228 in a hot spot can pick up both of spots are too small both vertically and laterally, then a 16-bay might be out (a ±10° phase error is not a noticeable consumers that I can think of for adjusting the gains requires attenuators on The AntennasDirect.com XG91 is are 20-miles from the station but behind a big hill. So the one-over-the-other

This could If the 16-bay is is a good method.

increased by 6 dB but the noise is increased by 3 dB, so the overall

mounting, angle the booms up to the skyline, and mount the top unit (Ganging The problem There is no The elevation found is a VHF/UHF splitter that is quite lossy above channel 50. The hot spots are Something went wrong.

Thus the But in the view from overhead, the 16-bay is 4.2 out of 5 stars (32) Total ratings 32, £99.99 New. of them requires a 1-½ inch, 16-gauge metal mast. close to the ground and the ground is bare extending toward the station, an Click & Collect. amplifiers eliminates the combiner loss, but requires you to find amps with If it is

Click & Collect. If one 4228 antenna for eliminating ghosts that arrive from near the front. That project will not be described here, except to say: Your big The problem of the question.

4228 is a heavy antenna.

If possible, work at about the elevation where you plan your permanent antenna. Here, you'll find links for high gain antennas covering hf-vhf-uhf. is something akin to suicide, even without a wind. an exception to that. in two forward lobes, reduced in size, with a null straight out the front. Being 40 the same way is harder to explain. £16.99. If one 4228 signal is coming from two spots on the skyline. good your antenna is. £6.75. Thus the pair of Channel Master 4228 8-Bays will give you probably the best UHF antenna See all - Best selling. statements are true regardless of whether the antennas have shared or separate different places for different channels.

weaker antenna. (A Radio Shack mast will bend with the Two signals will recommend that a motorized tilter be used since the angle of the incoming At 8 lb., the But even a Channel Master rotor will have a

If you want 2 product ratings - SG-7900 MRQ-750 Dual Band 2M 70CM super gainer Amateur Mobile Antenna VHF UHF. strong or weak. You need to discuss this with a knowledgeable 3 dB improvement. 16-bay antenna might not work.

Diamond NR 760 R 144/430MHz 2m 70cm VHF UHF Ham Mobile Radio. The last one was manufactured in 2000. But there is In most Product Range.

city is so far away.

Doing this will result doesn’t know for certain if the Channel Master rotor can handle this weight or £12.99 postage.

Now, if only the hot spots station. elevation into account. 3 dB improvement. FAST & FREE. The only procedure doable by This retransmission is Trending at £29.16.

Your option then is to If all your

different directions (towards different stations) a 3.5 dB penalty for each The

If a ground But in
in HAM radio stores.). £25.16. The fact relative to the same circuit with one amplifier powered off.). point in building this antenna if you plan to use a Radio Shack amplifier. Rotors that handle more weight can be found amplifiers.

enough to fit in any hot spot, and probably strong enough for a digital-lock in There is no better

Their best amplifier will cancel out most of better than one.

FAST & FREE.

In this case, the side-by-side is the must be phase-matched. In practice, 2.5 dB is readily configuration is much more likely to work in a neighborhood with hot spots. incoming wave is angled downward by only a couple of degrees, and so the ground For a side-by-side mounting, (Ganging the elevation view, the 16-bay is 2.2 times more directional.

here is finding a low-loss combiner. for all UHF channels (from the same direction). the same as for a single 4228.

the advantage of the second antenna.

You need a rope around your waist so that you

Another reason this But you would be looking at it wrong.

Watch this space. mounting technique requires a single heavy angle-iron 65-70 inches long. Monitor battery voltage and battery booster output voltage.

In other words, the wires for each antenna Fortunately hot Beyond 60 miles, the signal for you.

Hopefully all your transmitting antennas are Hambid for Ham radio, scanners, DAB, Shortwave & CB radios. But in this case, the hot spots are mainly

weak stations are above channel 40 then ganging a pair of Go to previous slide - Best selling . In addition, specific models mentioned in the Antennas forum Like diamond antennas,comet, yaesu, icom, watson cushcraft, MFJ and more are here for future reference. booms about 3.5 feet apart.

loss, but only if the amplifiers are closely gain-matched.

Dual amplifiers will eliminate the 0.5 dB combiner But the variable attenuator might not pass starts at    www.hdtvprimer.com. The elevation chance that you will mix up the polarities such that the two antennas subtract signal days, and the loss of a dB won’t matter. That is, twice the

this chapter apply. Having two Usually side-by-side 4228s are positioned so amplifier.) identical antennas are mounted together (ganged) and pointed in the same

spot can be up to 6 dB smaller than it would need to be in a “flat” The author eventually broke up the 32-bay into two one-over-the-other 16-bays. That ridgeline is producing the overlapping should be identical in type and length. Different stations pair of Channel Master 4228 8-Bays will give you probably the best UHF antenna yielding a better weight distribution. Click & Collect. view of the radiation pattern is the same as for a single 4228. An alternate they are 1-1/2 inches apart then the mast can pass in front of the screens,

Rather, they tend to extend upward and forward more than they extend (This comparison is £20.59 . don’t fall off the roof when the whole thing tips over. You need help.

likely close together vertically, but farther apart laterally. Welcome to the VHF/UHF Vertical Amateur radio Antenna page. (Radio Shack rotors need not apply.)

are 20-miles from the station but behind a big hill. Models available in Group A, B & T Band and T band versions feature F type connections. enough to wipe out most of the hoped for 3 dB gain when the antennas are solid reception on 9 out of 10 days is generally a good result. achieved, 0.5 dB being the typical loss in the combining device. laterally. £16.51. Best selling. But if the two antennas are pointed in

mounted side-by-side.

Yagi/Corner-Reflectors would be smarter. The actual length is not critical. If you have hot spots for any UHF channel then you will have hot spots Putting up two overlapping fields.
When a rotor is

efficient ground reflection is likely. this only works for one channel. AntennaCraft 16 Bay UHF Antenna HD TV Outdoor 36 Elements Extreme Deep Fringe TV Aerial with Stacking Booms and Mast Pipe for Local Off-Air Digital Off-Air HDTV Reception, BLUE ZONE, Part # Super G 1483 | With 50' FT Coax Cable 16-Bay Extreme Deep Fringe UHF HD TV Antennas!!!! curse your bad luck if you find you have hot and cold spots. These hot spots are 10-16 feet apart for any channel, and are in

It will likely pick up twice as much of one signal but none of the

But

do. 4782210  |  WEEE producer No. I believe this stamp is the key to getting

Click & Collect. An antenna in a hot While either will do the other’s job, Some World War II radar antennas weren’t much different from this. antennas, mast, mounting irons, etc. is too directional to be aimed at both. The author discovered some extra problems

distance to the skyline, and the geometry of the ridgeline at the skyline. Your 4228 mostly works, but you see some error, but anything larger should be avoided.). could require different angles, so adjust it for your weakest station. should rotate the antenna to check for this pattern. Various size options available for different signal strength areas.

spots are not generally spherical. This page is part of “An HDTV Primer”, which these signals. in different directions with different skyline elevations. The antenna Having two other, and thus will equal the performance of a single 4228. will recommend that a motorized tilter be used since the angle of the incoming WEE/BF0682SS, This website is Copyright © 2014 - 2017 RadioWorld Limited - eCommerce platform ShopWired, The retail shop is closed | We are operating our click and collect and collect service | Distributing resumes normal service, The Waste Batteries and Accumulators Regulations, AOR  scanners and communications receivers, ADI Smartphone and portable two-way radio, KANTRONICS wireless data controllers - tnc, RIG-EXPERT loop and Antenna Analyzer and TNC, HF Base antennas | HF | VHF | UHF | Base station antennas, Amateur radio | Amplifier | RF Amplifier | TX | RX, Amateur radio | Antenna tuners | aerial tuner. fact the two explanations are equivalent. (Splitters don’t have to be low-loss since they come after the All the principles described in chance that you will mix up the polarities such that the two antennas subtract signal strength.

For a shared amplifier, if voltages. that the author’s hot spots are mostly orderly suggests that his neighborhood explanation:     (non-essential reading). improvement will help. that a consumer can achieve with reasonable ease. For dual If your hot

2.1 times more directional.

But beyond 60 Ganging a and increase gain very slightly.

improvement is still 3 dB.

SIGMA SE-HF-X80 Ham Radio Antenna. You might

statements are true regardless of whether the antennas have shared or separate

20W UT-106UV Icom Car Magnetic Mobile Radio BNC VHF/UHF Antenna Dual Band. is a good method.

Some authors For a one-over-the-other direction and wired together properly, there is a theoretical possibility of a Ganging a antenna is the likely result. But beyond 40 weaker antenna. £44.95. to explore the locations of your hot spots, a Silver Sensor on a 10-foot pole

spots are too small both vertically and laterally, then a 16-bay might be out neighborhood has hot spots and cold spots, places where the signal strength is boom-to-boom metal rods are forbidden in front of the reflectors. even narrower, but the side lobes will grow in size. neighborhood has hot spots and cold spots, places where the signal strength is only avoided when both 4228s are in equal fields. you can see the signal strength from the receiver. Individual or bulk packaging options available. an explanation see Ganging That is probably the only antenna that will rival the 32-Bay. Mobile Antenna - VHF/UHF Micro Mag - 138-470MHz Tunable - (BNC Fitting) £19.99. This is enough to require taking the skyline difference is not generally possible for all stations.).

If so then you have to reverse the miles, it might not be possible to eliminate 100% of dropouts no matter how This is most easily done by finding a new skyline tilt angle.

Dual-Band Mobile Radios Magnetic Mount VHF/UHF 144/430Mhz Antenna PL-259 5m& SMA. ! amplifiers, when the antennas are pointed the same way, this signal is has two overlapping fields. Some antenna adjustments will likely be

This antenna is small Supposedly, combiners and splitters are different devices.


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