Amateur radio quad antenna build yourself
This undertaking is a solution to power up most of device or projects requiring double ( /-) changeful powerfulness supply. The itinerary is based on LM317 undeniable and LM337 pessimistic electromotive force regulators. LM317 series of adjustable 3 time period regulator is resourceful of supplying in excess of 1.5A ended a 1.2V to 30V DC output range, due to TO3 package of IC and bouffant energy cistern the power cater can handle large indefinite quantity load current.
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Baofeng WalkieTalkies and similar - Gadgets
I'm looking at buying a UHF/VHF walkie talkie to take as a backup man to my outer soul on a tripper up the Birdsville trail later this month. As the shape of modality out there is pretty large indefinite quantity horizon to horizon with no other obstructions, my guesswork is that even the Baofeng 2 way radios you see on ebay module get a great range, mayhap 10km or more. Has anyone bought one of these, and what did you think of them.
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Arrow Antenna 146/437-10 and 146/437-10WBP Product Reviews
Description: take-away Handheld Yagi for 146/437 mhz primarily used for satellite DXing. I get used this with a camera tripod and handheld, either way it performs nicely. However, it can be affixed on a camera stand and utilised for groundwave communications. I am using this aerial for broadcast communications. I besides use the duplexer so I alone soul one antenna sweet-talk to my HT. 10 watts peak for handheld operation/150 w peak once mounted. Lightweight, and successful for quick assembly/disassembly. The band is besides important in respondent my questions, identical helpful!
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