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220 MHz Yagi Antennas- the 7 Things it is best to Know Before You purchase Your Next One

Every year 1000′s of antennas fail because of high wind, heavy snow, ice loading and other severe weather situations.
 
220 MHz antennas, because of their significant physical size, are chiefly vulnerable to weather connected failure. That’s not all: when you combine these reliability issues together with your performance expectations (you prefer the antenna to perform reliably for many years, right?) your choice of antenna manufacturer for 220 MHz applications becomes chiefly important. This clearly isn’t the position to test and save on an antenna or base your buying choice on “it’s the brand we’ve always used” or simply because “the vendor’s in our system”. Let’s face it, antenna failures represent a completely pointless inconvenience and expense for device operators. The high cost of travel and manpower to replace a failed unit far exceeds any saving realized on the initial purchase of an ‘economy’ antenna.
 
you would like to installation the antenna once and forget about it. Right?
So to help make sure we get it right the first time, here are the 7 things you would have to know before you buy your next 220 MHz Yagi antenna:
1. Material. Insist on an aircraft quality 6061-T6 aluminum frame. this is solid and light. The boom (mast) must have a minimum of 11/2″ OD material with heavy duty ” resources and dipole. Remember, this antenna has to survive severe wind, often times with ice and frost build up. 2. Manufacturing. All resources may be machined on CNC tools for consistency and precision. This ensures every antenna is a clone of the next. you’re able to rely on the performance to be exactly the identical from antenna to antenna. 3. Construction. Insist on completely TIG-welded development for the whole antenna. TIG welding provides vital power and the antenna becomes electrically one piece. Forget bolted together antennas and antennas with bolted on brackets for this frequency. 4. Finish. Black anodized or black thermoset Polymer Coating (Powder coated). This helps decrease ice build up and protects against environmental degradation. Anodizing is the finest here but the thermoset polymer is an excellent second. The black color absorbs heat and helps melt any ice or hoar frost that builds up on the antenna. 5. Feedline. Purchase your antennas with the correct length feedline built into the antenna right from the factory. manufacturing unit installed, sealed and tested integral feedlines offer many reward and completely eliminate the requirement for field installed feed cables. here is especially wonderful for cookie cutter installations. you’re taking the antenna out of the box and it’s installed in less that 15 minutes. There’s no feedline to build and install!
6. Mounting hardware. A heavy duty steel bracket that quickly permits horizontal or vertical polarization need to be included with the antenna. You also wish a hot dipped galvanized bracket with minimum ” galvanized bolts (not stainless steel). Remember, these are significant antennas with high wind loading. A wimpy, light duty bracket can’t cut it at the 220 MHz frequency. 7. Warranty. The Antenna ought to come with a minimum 5 year warranty. If it’s built right then the manufacturer should stand behind it. If it doesn’t have a minimum of a 5 year guarantee it is best to be asking: why?
8. (Free Bonus Tip) make sure to insist that each and every antenna is tested and certified by the manufacture ahead of shipping! Nothing worse that getting to the install site and having a DOA antenna. in the event you keep in mind the above recommendations when selecting your next 220 MHz Yagi antennas, your end result may be drastically stronger reliability and improved system performance. Besides, who needs a phone call on your day off, telling you that an antenna has failed and the system is down. I know you don’t like to take that call and it definitely won’t be you in case you heed these recommendations

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