The CobWeb offers the following features :
- 20m, 17m, 15m, 12m, 10m operation
- Compact and easy to handle – Around 8ft square
- Doesn’t have to be too high – Reasonable performance at 10ft, with 20ft being the ideal
- Can be made with either figure-of-8 speaker wire (folded-dipole) or single-wires and 1:4 balun (for impedance matching)
- Can be constructed with PVC tube or fibreglass poles
- Possibility of being used portable if built right – perhaps with a tripod speaker stand?
- Parts required :
- Aluminium Plate : 200x100mm *
- Aluminium Plate : 150x100mm *
- 3x 1″ 16swg Aluminium Tube, 1m length *
You can use fibreglass throughout, if the wall-thickness is sufficient - 2x 20mm PVC Conduit, 3m length – fine for prototype, but fibreglass is better!
- 8x 1″ Stauff Element Claps *
- 2x V-bolts *
- 1.6mm (or whatever you have) Wire – total usage is about 38m.
- 2x FT140-61 (or FT240-61 for QRO) Ferrite toroids – from Ham Goodies
- 4x 600mm of RG316 Coax (Ham Goodies), or, for 100w MAX: RG174 will be fine
1x Waterproof Enclosure (min size: 120x85x55mm) - Selection of nuts/bolts – ensure they are stainless-steel!
See More:M0PZT
Equipment
CAR SEAT BOLT MOUNT WITH MAGNETIC MIC HOLDER FOR KENWOOD TM-D710
We are very excited to offer this new mounting solution for the Kenwood TM-D710. It will also work with Kenwood TM-D700A TM-D700E TM-D710E. There are... Read more
DX Engineering Ladder Line Surge Protector DXE-LLSP
Built by popular demand, the DX Engineering Ladder Line Surge Protector is ready to be placed in line with your balanced feedline antenna system! For... Read more
![openSPOT3 introduction [ VIDEO ]](https://qrznow.com/wp-content/uploads/2020/03/s2-265x168.jpg)
openSPOT3 introduction [ VIDEO ]
Home » openSPOT3 ••••••••• The openSPOT3 is a battery powered, portable, standalone digital radio internet gateway (hotspot) designed mainly for amate... Read more
Nooelec Ham It Up NANO – HF Upconverter
Ham It Up Nano – Tiny HF Upconverter w/ Black Enclosure, TCXO, & Bias-Tee Power Support A highly-portable RF (LF/MF/HF) converter for softwa... Read more
App - Mobile
Look4Sat: Radio satellite tracker – APP
Ham radio and weather satellite tracker and passes predictor inspired by Gpredict Main features: – Calculating satellite passes for up to one week (16... Read more
![Learn Morse Code in Minutes A Day [ APP ]](https://qrznow.com/wp-content/uploads/2019/12/images-10-265x168.jpg)
Learn Morse Code in Minutes A Day [ APP ]
– Learn Morse Code with different modes of learning, using the letter frequency and spaced repetition to help you learn. – Customize your... Read more
SmartSDR for iOS v3.4.01 Now Available
FlexRadio Systems announces the release of SmartSDR for iOS v3.4.01 is now available for download or update from the Apple App Store. This App require... Read more
New APP for digital QST
Apple has released a new app for digital QST (version 5.1) readers that use that platform. A long-standing problem involved the inability of some Appl... Read more
Review
Unboxing the AnyTone AT-D578UV III Pro DMR/FM Mobile Radio
AnyTone AT-D578UVIIIPRO Tri-Band Amateur DMR Mobile Radio with Bluetooth, GPS and BridgeCom University Want the latest and greatest DMR radio? We ar... Read more
Replacing a bad PL-259 Connector
“Since we all need to stay at home anyway, let’s fix up the station! I need to review a new mobile radio, and the connector on my VHF/UHF... Read more
Ofcom engineers shine a light on interference issue
Ofcom’s spectrum assurance team recently solved a sky-high interference case that took more than a little detective work to crack. The team were conta... Read more
News
Coronavirus: Initiative to popularise Amateur Radio and Satellite activities
The West India Zone Regional Coordinator for AMSAT-INDIA, Rajesh Vagadia VU2EXP, is offering students and others the opportunity to learn about amateu... Read more
Field Day 2020 — A Time to Adapt
Many individuals and groups organizing events for Field Day 2020 have been contacting ARRL for guidance on how to adapt their planned activities in th... Read more
Fire at the Belize Amateur Radio Club – V31MA
DXW, about the BARC Headquarter Club – Contest – Event Station * Marc, V31MA writes to report that, very sadly, the Belize Amateur Radio... Read more
Powering Your Ham Radio Shack with MFJ and Anderson’s
“Something you’ll stumble onto is the need to power more and more devices in your shack. This particuarly happens when you start buying mo... Read more
