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Since last year, I’ve become a bit of an arborist throw line evangelist. Arborist throw lines have made my wire antenna deployments so quick and easy compared with using monofilament fishing line or more complicated systems.
Since purchasing this arborist throw line last year, I’ve never looked back. The throw line never gets caught in tree branches, it’s reusable hundreds of times, and with it I can easily snag branches 50’+ above the ground to hang my wire antennas.
What follows doesn’t pretend to be some kind of “definitive guide” or “last word”, on the contrary, it’s aimed at people who have little or no experience with SDR but want to try putting together a decent station without paying an arm and a leg.
The idea of writing this came to me after reading a number of messages and discussions on various online groups/forums, in a lot of cases, someone bought an SDR (usually the ones coming with a telescopic whip antenna), and after connecting it was expecting it “just to work” or, better said, pretending that the SDR connected to that whip (usually placed on a table right near the computer) could receive ANY POSSIBLE signal, including transmissions coming from the “dark side of the moon.” 🙂 Those folks got scared by the fact that the SDR “didn’t work” and decided to give up; now, this short “guide” should allow anyone to setup what’s needed to have a working SDR
My self-imposed limitations for this project/experiment were the following:
The whole setup shouldn’t cost more than 150 Euros so that, if after trying the SDR one doesn’t like it, (s)he won’t have paid $$$, otherwise, if (s)he decides to keep it, the resulting station will allow for further expansion/improvement
The available space was considered to be that of an apartment, that is, no large field to put up huge wire antennas or to raise towers, the limit was the one of a balcony (in my home) that is 8 meters (max antenna length) by 3 meters (available height) by 2 meters (balcony width)
The whole setup should be simple and straightforward, no need to solder components or to build special types of antennas
Given the current Covid-19 sheltering, most components should be available online, while for others one may arrange with whatever is locally available (e.g. duct tape)
Since 2012, the Raspberry Pi nano computer has become an increasingly important part of the DIY and « maker » community. The increase in power of the Raspberry Pi over the years offers very interesting possibilities for radio amateurs. Indeed, it allows not to permanently monopolize a PC in the decoding of frames with software like WSJT-X, FLDIGI, etc…, without forgetting the possibility to control the Raspberry Pi remotely and thus to be able to work outside the radio shack as I can sometimes do on my couch. Moreover, this nano computer is now widely used in any Hotspot (DMR or D-STAR).
On this page, I want to share and document my experiences flying and using a kite antenna. There's nothing too special about a kite antenna. It's a fun, novel approach to the ham's age-old question about where to hang a wire antenna. When I lived inland, I could usually find a tall tree in which to hang an antenna. After relocating to the Galvston Island, tall trees are hard to come by. While the beach may lack trees, it usually does not lack wind.
A kite antenna setup is pretty straight forward and once you deploy it a couple times, it's downright simple. The key factor is having enough wind!
Neugierig wurde ich durch eine Veröffentlichung von W9SCH in der SPRAT Nr.69 unter 'A Four-Band UP & OUTER Antenna' und später durch einen Artikel im QRP-Report. Die Antenne ist als 'Upper & Outer' bekannt geworden. Sie besteht lediglich aus einem vertikale Strahler, dünner Draht, der locker um einen Glasfiebermast gewickelt wird und einem horizontalen 'elevated' Radial. Dieses Radial, als 'zweiter Strahler' bildet das einzige Gegengewicht, keine weitere Erdung. 'Wenn Strahler und Radial die gleiche Länge, λ/4 haben, funktioniert die Antenne schon recht brauchbar. Ein Tuner sollte aber eingeschleift werden, um das SWR zu optimieren.
Amateur radio (Ham radio) operators and engineers, have been experimenting with radio and antennas since Marconi. The use of a kite to support an antenna makes for great days operating and a wonderful HF antenna.
The linked pages that are listed below describe
various elements of a typical kite-antenna flying
field setup. One important lesson that we have
learned so far is that good kite-antenna contacts
result from flying the best possible antennas.
Another lesson learned is to keep the time that is
required to set up and put away as short and
convenient as possible - otherwise we will not do it!
Admittedly, we already have a page about our kite antenna exploits which makes for interesting reading. However those pages are about the practical use of these antennas. This talk given by Henryk M0HTB covers some of the background and the equipment considerations to supplement the practical exploits.
Call it the End-Fedz Trail Friendly killer if you like. This thing is much smaller and lighter, and a perfect match for the Mountain Topper series radios when you build in some traps or links.
Needed Materials:
- Special BNC connectors: https://amzn.to/38riPF7
- Toroids for this project are FT50-43: https://amzn.to/2NU7vbc
- Capacitors are 100 pF SMD ceramic 500V or 1kV models.
- 28 ga magnet wire: https://amzn.to/2AyjpEI
- Poly-Stealth 26 ga antenna wire. I've ordered from this company a few times and had great service: https://www.amateurradiosupplies.com/...
- 5 minute epoxy: https://amzn.to/2ZAAFRZ
- 5/8" or 3/4" heat shrink tubing (adhesive lined preferred): https://amzn.to/2VK5Rgq
- 3/32" or 1/8" heat shrink tubing: https://amzn.to/2NTnKFp
DMRconfig example bayern mit analog
DMRconfig is a utility for programming digital radios via USB programming cable. Supported radios:
TYT MD-380, Retevis RT3, RT8
TYT MD-390
TYT MD-2017, Retevis RT82
TYT MD-UV380
TYT MD-UV390, Retevis RT3S
TYT MD-9600
Baofeng DM-1701, Retevis RT84
Baofeng RD-5R, TD-5R
Baofeng DM-1801
Radioddity GD-77
Anytone AT-D868UV
Anytone AT-D878UV
BTECH DMR-6x2
Zastone D900
Zastone DP880
Radtel RT-27D
Welcome to mods.dk, the best site on the internet for modifications repair instructions and improvement of HAM rigs, HAM modems, etc.
Here you will find modifications of many types of HAM radios, microphones, power supplies, modems etc. You can find how to modify a radio to receive and transmit out of range, you can find how to modify a radio to use high speed packet modems, and how to modify the radio/modem to get better performance.
Right now the database contains 5885 articles. Use the navigation menu on the left side to easy find your equipment. You can also use the search option, it is very fast. See the search help link for more information.
KW- Vertikal- Antenne für den portablen Betreib
für 7,0 bis 55,0 MHz (6m - 40m)
und ca. 100 Watt HF
Die super Lösung, für den portablen Einsatz.
Leicht im Rucksack zu verstauen.
Ausgefahren mit einer Gesamtlänge von bis zu 5,5m.
Lieferumfang:
● Teleskop- Antenne / Edelstahl- Stab (ca. 5,3m)
● High-Q Luftspule mit Abgriffs- Möglichkeiten
● MFJ-342T Montagewinkel mit PL- Buchse (SO-239)
● das "Gegengewicht" aus vier Cu-Litzen-Kabel (á 3,6m lang) als Radials
Frequency range: 7/14/21/28/50/144/430MHz, Max Pwr input: HF/50MHz: 100W (SSB/CW), 50W (AM/FM), 144/430MHz: 50W (All mode) Height Max 2.2m, 0.6m for transporting * Weight: 930g. Supplied with radiating elements, radial elements for VHF/UHF, radial wires + spare radial wire, Allen key.
The ATAS-25 utilises a manual tuning system which resonates the radiating element for lowest SWR without the need for expensive mono-band resonating whip assemblies. It allows dual frequency operation on HF or 50MHz and either 2m or 70cm (duplexer not supplied). A very handy feature is that the ATAS-25 is designed to mount directly onto a standard camera tripod mount (not supplied) and makes up a portable antenna system ideal for tempory field operation but not recommended for long-term outdoor installation.
For some models, you may wish to purchase a diplexer or triplexer to avoid moving your cable from one antenna jack to another. When using the ATAS-25 with the FT-817, set Menu #07 to REAR for all bands.
Complete antenna system mounts on window frames, balconies, and railings. Perfect for apartment dwellers. Covers 80-6 Meters. Includes universal mount/clamp, built-in antenna tuner with RF isolator, long 12 foot telescopic whip (22.5 inches collapsed), high efficiency loading coil for 40/80 Meters, counterpoise wires, and safety rope. Handles 200 Watts.
Ham Radio Q&A answers your amateur radio questions and explores the different aspects of the ham radio hobby. Featuring Michael Martens, KB9VBR
There are two antenna connectors on the left for the FT-857D, one for HF and the other for VHF/UHF. The HF jumper actually is connected to the antenna tuner and there is another jumper goes to the radio. There is also a VHF/UHF connection on the right for the FT-8800R.
MetaFunk Exhibition 2014 - 8.1.2014, 19:30 Uhr im @MetalabVie https://t.co/8zNOBvufAA #hamradio #amateurfunk #fb