Showing posts with label uhf. Show all posts
Showing posts with label uhf. Show all posts

Sunday, December 23, 2012

Nifty E-Z Guide to D-STAR Operation Review

Nifty E-Z Guide to D-STAR Operation
Average Reviews:

(More customer reviews)
Several weeks ago I got into D-Star with the purchase of an Icom IC-80AD handheld. As soon as I ordered the radio, I decided to purchase a copy of the Nifty E-Z Guide to D-STAR Operation. The radio and the book arrived on the same day. While I was able to use the Icom software to program the radio right away, the Nifty Guide helped me to easily understand how to properly program the radio. But it's more than that, it discusses in very easy to understand terms how D-STAR operates. Not only that, the guide gives an overview on how to link and unlink reflectors, and how to use the DV Dongle for communication via a PC to the D-STAR network. You will also find an overview and how to use third-party software programs for D-STAR like D-Chat and D-RATS. I highly recommend this book to all new users of D-STAR and those amateurs considering moving to D-STAR.

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Using simple and clear-cut explanations, the author, Bernie, N6FN explains how D-STAR repeater systems are configured and intercommunicate over the Internet.This book will teach you how to program your radio to take advantage of call routing and linking within your local repeater system and through Internet gateways to anywhere in the world.DV short text messaging via the radio and low-speed text data transmissions using a PC and the d*Chat and D-RATS digital data communications programs is explained.Using the DV Dongle for accessing the worldwide D-STAR gateway system without having to use a radio is made clear.Web based resources for calculating call sign routing parameters and finding active D-STAR repeaters and recently heard stations are covered in detail.By far, this is the book to have for active D-STAR operators and those interested in trying the technology.Experience the thrill of worldwide digital communications!

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Monday, December 10, 2012

Galaxy DX2517 10 Meter Base Ham Radio Review

Galaxy DX2517 10 Meter Base Ham Radio
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This radio is illegal for use in the United States--either as a Citizens Band unit, or as a single band amateur transceiver. It is not type certificated for either use by the FCC, and is considered an "Export" model for sales and use outside the US.
The intended purpose of this radio is for illegal power output on the Citizens Band Channels (as clearly evidenced by the channel 40 and frequency clearly visible), and illegal "freebanding" in the frequencies between 11 meter CB and 10 meter amateur band.
N4PRT

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Galaxy DX2517 10 Meter Base Ham Radio

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Thursday, April 12, 2012

Terk HDTVa Indoor Amplified High-Definition Antenna for Off-Air HDTV Reception Review

Terk HDTVa Indoor Amplified High-Definition Antenna for Off-Air HDTV Reception
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Having spent a bundle acquiring a Sony LCD HDTV and upgrading our Dish service to include its limited set of HDTV channels, we were anxious to see what an Over-the-Air Antenna might add.
In all, we tested 5, including the highly rated Zenith log periodic (about $40 at Sears), an amplified Samsung (about $99 at Best Buy), an outdoor Terk 32 (about $80 at Circuit City), our old roof mounted VHF/UHF antenna (circa 1985), and the amplified Terk HDTVa (about $50 at Radio Shack). The Terk HDTVa won hands down; no contest, blowing away the much touted Zenith.
We live in the sparsely populated, low hill countryside of Western Massachuetts. The THDTVa effortlessly brings in between 20 and 30 analogue and digital (incl hdtv) channels broadcast most from 12 to 45 miles away, and some as far as 65+ miles away in Connecticut. Some digital OTA channels actually come in more sharply than some of the (Dish) satellite digital channels.
This is definitely a keeper: a great value, gem of an antenna. So good, in fact, we are debating giving up our $50/month Dish service, putting $15 of that to Netflix to replace HBO, and banking the remaining $35.

Click Here to see more reviews about: Terk HDTVa Indoor Amplified High-Definition Antenna for Off-Air HDTV Reception


The high-performance HDTVa amplified indoor HDTV antenna from Terk Technologies is designed to capture both UHF and VHF signals (channels 2 to 69) while extending the reception range for all local HDTV broadcasts. The HDTVa uses an ultra-low-noise, high-gain amplifier with Terk's exclusive Dual-Drive Amplifier technology for clear reception of both distant and close HDTV and DTV stations.
Capture both UHF/VHF signals while extending the reception range for all local HDTV broadcasts. Click here for a larger image

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Tuesday, August 23, 2011

Winegard HD8200U Platinum Series High Definition VHF/UHF TV Antenna Review

Winegard HD8200U Platinum Series High Definition VHF/UHF TV Antenna
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I have endured and suffered an ongoing struggle to receive local VHF channels Over the air (OTA) through an antenna. The past few months have been particularly bad especially for digital channel 12 on VHF which for most of that time was not receivable and when I could get it I was getting between one and two bars (out of ten) of signal strength. I would usually get two bars of signal strength on digital channel 7 VHF. I had been using a 30ish year old Radio Shack UHF/VHF combo 160 inch rooftop antenna that came with my house for VHF and a seperate UHF AD XG91 antenna combined through a CM 7777 preamp. UHF reception has been pretty good for the last year and a half or so, but it has been a struggle with VHF reception. I live in the northwestern Berkshire Mountain range, just to the east of Mt. Greylock, the highest peak in Massachusetts. I sit about 49 miles east of the transmitters broadcasting the Albany, NY networks as I live in that DMA. I have done a lot of research into my problem and decided to replace my Radio Shack with a new antenna. I narrowed it down to a Channel Master 3671 or a Winegard HD8200U. I decided to go with the Winegard and ordered it from Amazon because it was supposed to be UPS shippable and there's no place around here to get one. I was suprised at how long the box was at seven feet and it arrived with all but one staple removed and the antenna suffered a bit of cosmetic damage in transit including a few slightly bent elements that I was able to straighten without much trouble. All of the parts were there however and it wasn't much trouble to assemble. It was a bit bigger than I expected, about three feet longer than the Radio Shack it replaced at a total of about 14 feet assembled, but it is reasonably light. So I got it installed and aimed and checked my TVs. Well to my surprise my signal strength on digital Channel 12 and digital Channel 7 went from one to two bars up to a solid ten bars (out of ten) on both channels! I was quite amazed and wish I had replaced this antenna long ago. Channels 6 and 10 ANALOG now also come in crystal clear and I'm even getting channel 2 analog out of Utica, NY (about 30 miles west of Albany, NY) sound and snowy picture. Simply an amazing antenna and I recommend it highly to anyone on the fringe. I should be set now for the analog shutoff when some other channels move back to VHF. Very satisfied with this antenna! Amazon as always beat everyone else on price and satisfaction. Delivery was a bit shaky, but that was UPS's fault, not Amazon


Click Here to see more reviews about: Winegard HD8200U Platinum Series High Definition VHF/UHF TV Antenna

Platinum HD antennas deliver powerful VHF performance and offer additional 1 dB to 2 dB higher gain on VHF and UHF, important for weak signal areas. Outstanding UHF reception achieved by precise director spacing and highly efficient corner reflectors.

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Friday, August 19, 2011

Basic Indoor Antenna Review

Basic Indoor Antenna
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(More customer reviews)
I'm a first timer at getting OTA HDTV. This has been an experiment in progress for the past 5 weeks. I have gone through four antennas (they are all here as I write this) before finding something that's satisfactory (rather than tolerable).
I live around 25 miles from Manhattan, where the towers of most TV stations are located. I am also aware of the directional information from [...], and have experimented accordingly with its effects on reception. My apartment's windows all face north, while the signals all comes from southwest. I cannot get signals from where it comes from, and thus needed to get signals from deflections perhaps off nearby buildings and trees. It's a very poor circumstance for over-the-air reception, maybe just slightly better than being underground. Signals are weak, and are affected by weather. Stormy and windy days have shown effects at disrupting signal reception.
With this said, and without going into much detail, let's talk about the antennas. Now all these antenna have been tested with the same equipment, setup, directional adjustments, location, etc. etc. and have been tested through good an foul weather, day and night, to observe differences.
1.Terk HDTVa Terk HDTVa Indoor Amplified High-Definition Antenna for Off-Air HDTV Reception- After reading some rave reviews and high ratings at [...], log periodic types (looks like a fishbone) seems to be the way to go. I got the Terk HDTVa first, thinking that the amplification and VHF antenna should nail my reception problems at the start. However, after more than two weeks of fidgeting around ad nauseam (directions, locations, amplifications, different devices, etc.), I only managed to pick up two ATSC channels' signals, and even those don't have strong enough signals to display anything. I thought maybe it's just my poor location, and that I should probably give up on the attempt. The included in-line amplifier dongle doesn't work at all. Powering it on makes no difference in signal strength readings, which hovered around 5-10%.
It is well built, looks nice, good concepts, but it just didn't work.
2.Phlips PHDTV1 Philips PHDTV1 Digital HDTV-UHF Indoor Antenna- The venerated "silver sensor" which was previously sold under the Zenith brand also had great ratings and reviews. It's in fact nearly legendary. I decided, in desperation, to try it out, even if it doesn't have amplification. It seems all my local HD channels are in UHF anyway, so I won't miss the VHF dipoles.
The unit has startlingly poorer build quality compared to the Terk. It has paint bubbles, hairs and dusts trappings in the paint, sharp edged cheap plastics and much thinner metal blades that's covered in oil and has some dings and bendings. I wasn't impressed with the quality, and didn't expect much from it as I set it up.
To my surprise, it picked up 9 working channels (note: the terk got two channels' signals, but they didn't work) from the start, even if it's randomly placed. It's thrilling as it was the first time I saw OTA HDTV. After some adjustment and location experiments, I was able to receive 19 channels. However, not all of these channels work well given the same direction.
The directionally sensitive antenna needs to be adjusted as I switch channels. e.g. NBC and CBS seems to work well in one direction, while ABC has its own favorite direction, which works also with FOX. I tried as best as possible to find a compromise point where everything works. I couldn't. It just needs to be adjusted constantly.
The transmission is often dogged by reception fluctuations. Signal quality tend to fluctuate quite a bit, especially affected by weather. That means the TV playback would get choppy at times, with its severity dependent on the direction I point the antenna at. I didn't think fluctuating signals was a characteristic until I tried the latter two antennas later. I also found that I had to constantly play with the directional positioning to get a stable signal from each of the stations.
It works, and I was impressed, but then in retrospect it could only be best described as a "tolerable" HDTV experience as I struggled for a smooth signal delivery.
3.RCA ANT111 Basic Indoor Antenna- While shopping in stores, I saw this basic and classic RCA loop/dipole antenna for less than $[...]. I couldn't resist the temptation to try it out, just for the heck of it. It is also a different type of antenna than the previous two.
Again, I was surprised. This cheap antenna worked well, especially considering how it's only a fraction of the price of the two I'd tried. I ended up getting 17 channels, a few less than the PHDTV1, with the same location and setup. Some channels also don't work, even if signals were detected. The quality of the signals seems to be the key.
So what's so special about it? It strangely had better signal delivery for the channels that worked. It's not as choppy, and quality level is very steady. It is also not as affected by directional positioning. I was for the first time able to view FOX, ABC, CBS, NBC without adjusting the antenna. However, the lack of directionality also makes it ambiguous when I lost the signal. It seems that there's no "favorite direction" for the channels, which also means I can't pull in stronger signals at my choosing. It is also quite susceptible to weather changes, particularly wind (which probably affected signals reflected by trees?)
The signal strength also seems to be a little weaker, though the signal quality tend to be higher in general. That probably contributed to the smoother video delivery. It also tempted me to get a similar design that has amplification.
4.Philips MANT510 Philips High Performance Amplified Indoor Uhf/ Vhf/ Fm Antenna- This unit has a "digital TV optimized, patent pending UHF panel array". I thought I'd try it out just for the slightly different antenna design, if not just for the adjustable amplification.
Well, it works, and works quite well. The antenna doesn't work without power, and with amplification turned off it works a little less than unpowered PHDTV1 and ANT111. Yet with the amplification turned on, I get 24 channels, with strength up to 81% (compared to 3-10% unamplified, and quality consistently above 60 and usually in the 70-90%+. That generates the most reliable video delivery of all the ones tried.
While thunderstorms still managed to distrupt signals, it's much less often and only momentarily. I also don't have to worry about hunting for signals as I just point it in one general direction and I get everything but three NJN channels (they are even further from here.. maybe a good 50 miles).
I finally can just set the antenna and forget it. It lets me focus on the programming rather than antenna adjustment. While it needs to be powered, it gives me the confidence to finally enjoy HDTV, rather than tweaking and tolerating it. It's good enough that I can probably stop searching. I hope it'll be helpful to you who may be going through the same purchasing decision nausea as I have.

Click Here to see more reviews about: Basic Indoor Antenna

Basic Indoor Antenna, This high-performance indoor antenna reduces static and increases the beauty of the TV you receive over the air, including HDTV signals.

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Thursday, June 9, 2011

Channel Master 2016 DIGITAL ADVANTAGE (HDTV / VHF / UHF) Outdoor Antenna Review

Channel Master 2016 DIGITAL ADVANTAGE (HDTV / VHF / UHF) Outdoor Antenna
Average Reviews:

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Granted the directions are bad, but it is so simple to set up that directions aren't needed. I bought it under the assumption that the range is 35 miles. I have it in the attic of our two story house, pointed at a station 60 miles away and it comes in flawlessly. All or local stations are 90 degrees off this station and they come in resonably well for being that far off. I tried it with am amplifier, but the amp is not needed so I removed it. Here are two good sites to help you find what stations you might recieve.
[...]


Click Here to see more reviews about: Channel Master 2016 DIGITAL ADVANTAGE (HDTV / VHF / UHF) Outdoor Antenna

(CHN2016) Channel Master 2016 DIGITAL ADVANTAGE (HDTV / VHF / UHF) Outdoor AntennaThe Channel Master 2016 is a compact outdoor TV antenna that is engineered to receive high quality digital/HDTV broadcast over channels 7 to 51. Since most broadcasts after the February 2009 analog shutoff will be made on channels 7 to 51, stations that the 2016 is perfectly suited. Oversized antennas will be needed for low band channels 2 to 6. The Channel Master 2016 HDTV / UHF antenna is rooftop, eave, or wall mountable using a traditional mast or a universal satellite style mount.MODEL: CHN2016Reception Range: Channels 7 thru 69 up to 35 Miles Receives digital/HDTV & analog UHF/HIGH VHF TV signals Turning Radius: 34 in Can mount to mast on roof, walls, chimneys and attics Easy Installation Use with digital converter box or HDTV ready TVsIncludes:Channel Master 2016 HDTV VHF High / UHF AntennaMounting kitOwners manual Dimensions:47" x 22" x 36.5"Weight:5lbs

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