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! Radio Stuff !! Backpack Kit My (initial) goal is to make all parts of a backpack kit that will fit in a 7.62mm ammo can sized box, transmit CW on 40m. I plan to build, roughly in this order: * [Transciever|DIY Transciever] - SW-40+ * [Morse Key] - Starting with a junky straight key. Anything to get on the air * [Iambic Bug] - Still looking for that perfect design * [Antennas] - Constrained by neighborhood rules, mostly * [Power|Backpack Kit Power] - Generated or battery !! General [Test Equipment] [Stable Oscillators] !! My goals for later on [Big Amp] - (QRP is cooler, but booming is kind of neat in a different way) [Antenna Tuner] - Will just cut to freq for the first revision, but later on I'll want to make a few tuners !! Wilder [Interior Crocodile Oscillator] - Awesome idea to teach/learn radio design using homemade CRT oscilloscopes. !! Yaesu FT-840 * [Brochure PDF|./ham/FT840-Brochure.pdf] * [User Manual PDF|./ham/FT840-User_Manual.pdf] * [Service Manual PDF|./ham/FT840-Service_Manual.pdf] * Specifications (from Universal Radio) - http://www.universal-radio.com/catalog/hamhf/2319spec.html * FAQ - http://jim.jingozian.tripod.com/ft840faq.html (a few good tips, including out-of-band xmit) * Sound-card Interfacing: http://www.qsl.net/wm2u/interface.html * Cat Interface ** http://n5ztw.com/Yaesu.htm ** CAT Interface: http://www.eham.net/articles/2800 * Hook-up points: http://www.qsl.net/wm2u/inter_ft.html (Bottom line: 'AF OUT' = RCA jack at back, 'Mic Input' = pin 8 i/p, pin 7 gnd; 'PTT Acc' = RCA at back; 'KEY Input' = at back) !! VHF/UHF * [Alinco DJ-G7 Official Spec Sheet|http://www.alinco.com/Products/DJ-G7/] * [Universal-Radio Spec Sheet|http://www.universal-radio.com/catalog/ht/1007.html] * [PCB Log Antenna|http://www.youtube.com/watch?v=-EU7wFsBWQc] * [Loop Antenna Demo|http://www.youtube.com/watch?v=sCJ_v_6Ah3s&feature=related] * [Quick Review|http://www.youtube.com/watch?v=xiK_assrQIM] - But I did learn that you can say "cems" to mean "centimeters" * [Demo of Several Features|http://www.youtube.com/watch?v=zprnhJKUksk] * [Goofy Tinker-Clinker "Preview"|http://www.youtube.com/watch?v=0dkbFAAaW7w] !! Calculation * gsmc manpage/tutorial: http://manpages.ubuntu.com/manpages/hardy/man1/gsmc.1.html * [Ampacity and AWG number] !! [Communication Theory] !! Silliness * [Words that can be spelled with dits and dahs swapped|http://panoptic.com/rking/ham/flipwords/]
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Last changed: 2013/09/11 16:48