COBWEB ANTENNA
Multiband cobweb antenna works on 7 HF bands and up to 1000w.
Bands are 14,18,21,24,28,50,70 MHz
Built and modified by me for my friends and other radio hams.
This antenna has sides of the square 2.65 x 2.65 m, and is very useful where space is limited.
This antenna works well as an antenna for your base but equally well as portable for holidays and field work due to it’s folding boom arms.
It’s unique design allows this antenna to be quickly and easily set up within a few minutes.
It’s design is very strong and robust, and is resistant to strong winds (110 mph).
The antenna is contructed from glass fibre rods, aluminum, stainless steel and galvanized steel and has a sealed connector box resistant to rain and UV rays to keep the balun and connections from the elements.
The antenna has an impedance of 50 ohm.
The antenna works well on DX and as a QRP station.
It is pre-tuned to different bands at a height of 4 metres above the ground. Raising the antenna above 4m will generally see SWR decrease.
Bandwidth on 6 and 10m may require the use of an ATU to cover more of the band..
This antenna is omni-directionally so you do not need a rotator.
It is made up of folded half-wave dipoles for 14,18,21,24,28,50,70 MHz
Polarisation is horizontal and is naturally resistant to some electrical interference and static.
Large system efficiency to 95%.
Technical details
Socket — UC1 / SO239
Horizontally polarised
Radiation Omni-Directional
Max power supplied 1000 Watt
Antenna gain on all bands 5 dBd (7.15 dBi)
Minimum SWR 1.1: 1
Can accommodate any mast up to 50mm in diameter.
Weight 4.2 kg.
Square sides of 2.6m
target=”_blank” href=”https://qrznow.com/category/ham-radio-antena/”>Antenna
target=”_blank” href=”https://qrznow.com/yaesu-antenna-rotators-g-450a/”>Yaesu Antenna Rotators G 450A
G-450A Specifications Power Supply Voltage: 117 VAC, 50-60 Hz Power Supply Current Consumption: 0.5 Amps Rotor Voltage: 24 VAC Cable Conductors… target=”_blank” href=”https://qrznow.com/yaesu-antenna-rotators-g-450a/” class=”read-more-link”>Read more
target=”_blank” href=”https://qrznow.com/2-meter-extreme-dream-beam-antenna-by-kg5abl/”>2 Meter Extreme Dream Beam Antenna by KG5ABL
target=”_blank” href=”https://qrznow.com/2-meter-extreme-dream-beam-antenna-by-kg5abl/” class=”read-more-link”>Read more
target=”_blank” href=”https://qrznow.com/low-cost-hf-portable-antennas/”>Low Cost HF Portable Antennas
“HF Mobile whips can make great portable antennas. Maybe you already have some. A couple of single band models may cover your needs. Here we loo… target=”_blank” href=”https://qrznow.com/low-cost-hf-portable-antennas/” class=”read-more-link”>Read more
target=”_blank” href=”https://qrznow.com/hf-omniangles-hf-28-10-meters/”>HF Omniangles HF-28 ( 10 Meters )
HF Omniangles Our HF line of horizontal omnis are a bit different than the VHF and UHF models in that they aren’t as excellent from an omnidirec… target=”_blank” href=”https://qrznow.com/hf-omniangles-hf-28-10-meters/” class=”read-more-link”>Read more
target=”_blank” href=”https://qrznow.com/pro-loop-antenna-kits-zmxloop/”>Pro-Loop Antenna Kits – ZMXloop
Basic HF kit 1M Diameter loop model ZMXMLA1 The main loop 1M size the feed ring and insulator. This suits shortwave listeners and amateur radio. Basi… target=”_blank” href=”https://qrznow.com/pro-loop-antenna-kits-zmxloop/” class=”read-more-link”>Read more
target=”_blank” href=”https://qrznow.com/poor-man-antenna-analyzer/”>A Poor Man Antenna Analyzer by GM3VLB
A Poor Man Antenna Analyzer by André Saunders, GM3VLB – Read .pdf File in adobe reader Link 1 or Link 2 Also Visit: http://www.gm3vlb.com/… target=”_blank” href=”https://qrznow.com/poor-man-antenna-analyzer/” class=”read-more-link”>Read more
target=”_blank” href=”https://qrznow.com/switching-rigs-instead-of-antennas/”>Switching Rigs Instead of Antennas
George, WG4J, has a alpha delta 4 position switch that he wants to use to switch between his radios instead of the antennas. He asks, Will this work? target=”_blank” href=”https://qrznow.com/switching-rigs-instead-of-antennas/” class=”read-more-link”>Read more
target=”_blank” href=”https://qrznow.com/new-antenna-50-and-70mhz-4-el-moxon/”>New Antenna 50 and 70MHz – 4 el Moxon
EAntenna 5070MOX Only 86cm (34 inch) boom lenght with 2 elements Moxon in 4m and another 2 in 6m band. The gain is 6,03 dBi in 50 MHz. and 5,95 dBi in… target=”_blank” href=”https://qrznow.com/new-antenna-50-and-70mhz-4-el-moxon/” class=”read-more-link”>Read more
target=”_blank” href=”https://qrznow.com/category/review/”>Review
target=”_blank” href=”https://qrznow.com/unboxing-the-tyt-md-uv380390-dual-band-dmr-ht/”>Unboxing the TYT MD-UV380/390 Dual Band DMR HT
TYT has released a new Dual Band DMR Radio in the form of their classic MD-380, which they have deemed the MD-UV380. It looks the same, feels the same… target=”_blank” href=”https://qrznow.com/unboxing-the-tyt-md-uv380390-dual-band-dmr-ht/” class=”read-more-link”>Read more
target=”_blank” href=”https://qrznow.com/performance-test-of-mfj-1846-six-band-hex-beam-antenna/”>Performance Test of MFJ-1846 Six-Band Hex-Beam Antenna
“Performance results of MFJ-1846 Six-band hex-beam antenna. The antenna shows great directionality and ample gain. The SWR doesn’t quite c… target=”_blank” href=”https://qrznow.com/performance-test-of-mfj-1846-six-band-hex-beam-antenna/” class=”read-more-link”>Read more
target=”_blank” href=”https://qrznow.com/swr-simplified-arrl-podcast/”>SWR Simplified [ ARRL PODCAST ]
A discussion of SWR — Standing Wave Ratio — can be complicated, but it really doesn’t need to be. target=”_blank” href=”https://qrznow.com/swr-simplified-arrl-podcast/” class=”read-more-link”>Read more
target=”_blank” href=”https://qrznow.com/retevis-rt82-dual-band-dmr-digital-two-way-radio-at-mls-overview/”>Retevis RT82 Dual Band DMR Digital Two Way Radio at ML&S Overview
Retevis RT82 Description RT82 is a dual band DMR radio Frequency band:136-174 & 400-480MHz 10000 Contacts IP67 Waterproof Use T… target=”_blank” href=”https://qrznow.com/retevis-rt82-dual-band-dmr-digital-two-way-radio-at-mls-overview/” class=”read-more-link”>Read more
target=”_blank” href=”https://qrznow.com/sunsdr2-pro-at-sk3w-in-cqww-ssb/”>SunSDR2 PRO at SK3W in CQWW SSB
“How does the SunSDR2 PRO perform in a multi operator contest environment? We wanted to test the PRO in the toughest possible environment, a mul… target=”_blank” href=”https://qrznow.com/sunsdr2-pro-at-sk3w-in-cqww-ssb/” class=”read-more-link”>Read more
target=”_blank” href=”https://qrznow.com/controlling-the-om2000a-from-tablet/”>Controlling the OM2000A+ from Tablet
The automatic linear amplifier OM2000A+ is designed for all short wave amateur bands from 1.8 to 29 MHz (including WARC bands) + 50 MHz and all modes…. target=”_blank” href=”https://qrznow.com/controlling-the-om2000a-from-tablet/” class=”read-more-link”>Read more
target=”_blank” href=”https://qrznow.com/icom-ic-705-wireless-lan-digital-demo/”>ICOM IC 705 Wireless LAN Digital Demo
https://www.youtube.com/watch?v=auW2vMQsQBA target=”_blank” href=”https://qrznow.com/icom-ic-705-wireless-lan-digital-demo/” class=”read-more-link”>Read more
target=”_blank” href=”https://qrznow.com/heil-sound-pr-40-black-unboxing-kiwi-sdr-overview-yaesu-cashback/”>Heil Sound PR-40 Black Unboxing, Kiwi SDR Overview & Yaesu Cashback!
Heil Sound PR-40 Black Unboxing, Kiwi SDR Overview & Yaesu Cashback! target=”_blank” href=”https://qrznow.com/heil-sound-pr-40-black-unboxing-kiwi-sdr-overview-yaesu-cashback/” class=”read-more-link”>Read more
target=”_blank” href=”https://qrznow.com/category/equipment/”>Equipment
target=”_blank” href=”https://qrznow.com/emtron-dx-3sp-hf-amplifier-4-5kw/”>EMTRON DX-3SP – HF Amplifier ( 4.5Kw )
The “Big Gun” is getting even bigger, with the new DX-3SP! With over 4000 Watts CW and more then 4500 Watts SSB, this QRO muscle amp is… target=”_blank” href=”https://qrznow.com/emtron-dx-3sp-hf-amplifier-4-5kw/” class=”read-more-link”>Read more
target=”_blank” href=”https://qrznow.com/ray-novak-n9ja-icom-america-manufacturers-showcase/”>Ray Novak, N9JA – Icom America – Manufacturers Showcase
“We are live with Ray Novak, N9JA, Sales manager of ICOM America with Tim, K3LR. What questions do you have for Ray?” target=”_blank” href=”https://qrznow.com/ray-novak-n9ja-icom-america-manufacturers-showcase/” class=”read-more-link”>Read more
target=”_blank” href=”https://qrznow.com/alpha-4040-dreamtuner/”>Alpha 4040 DreamTuner
“In the last 45 days, we’ve made a lot of progress on the Alpha 4040 DreamTuner. As you know, when we tested the tuner under full… target=”_blank” href=”https://qrznow.com/alpha-4040-dreamtuner/” class=”read-more-link”>Read more
target=”_blank” href=”https://qrznow.com/a-compact-5-band-qrp-ssb-transceiver-in-smd-technology/”>A compact 5 band QRP SSB transceiver in SMD technology
A compact SSB transmitter/receiver will be presented. This unit covers 5 bands within the amateur radio spectrum (3.5, 7, 14, 21 and 28 MHz). Receiver… target=”_blank” href=”https://qrznow.com/a-compact-5-band-qrp-ssb-transceiver-in-smd-technology/” class=”read-more-link”>Read more
target=”_blank” href=”https://qrznow.com/xiegu-g1m-hf-transceiver-quad-band-portable-sdr-qrp-5w-ssb-cw-aw/”>XIEGU G1M HF TRANSCEIVER | QUAD BAND | PORTABLE SDR | QRP | 5W SSB CW AW
XIEGU G1M [Entry Level QRP Transceiver] – With receiving 0.5-30 MHz generally and transmitting capabilities on four popular amateur radio bands,… target=”_blank” href=”https://qrznow.com/xiegu-g1m-hf-transceiver-quad-band-portable-sdr-qrp-5w-ssb-cw-aw/” class=”read-more-link”>Read more
target=”_blank” href=”https://qrznow.com/mk-4-heavy-duty-25-maximum-height-fiberglass-masts/”>MK-4 Heavy Duty – 25′ Maximum Height Fiberglass Masts
The MK-4 Series of masts are, by far, our most portable masts for many reasons. The masts are light weight and short enough, when fully collapsed, to… target=”_blank” href=”https://qrznow.com/mk-4-heavy-duty-25-maximum-height-fiberglass-masts/” class=”read-more-link”>Read more
target=”_blank” href=”https://qrznow.com/integra-unveils-novel-100v-rf-gan-on-sic-technology-with-superior-performance/”>Integra Unveils Novel 100V RF GaN-on-SiC Technology with Superior Performance
Modernization of multi-kilowatt RF communication and data transmission systems is pushing the requirements of what traditional vacuum electron devices… target=”_blank” href=”https://qrznow.com/integra-unveils-novel-100v-rf-gan-on-sic-technology-with-superior-performance/” class=”read-more-link”>Read more
target=”_blank” href=”https://qrznow.com/which-sdrplay-sdr-receiver-is-right-for-you/”>Which SDRplay SDR receiver is right for you?
target=”_blank” href=”https://qrznow.com/which-sdrplay-sdr-receiver-is-right-for-you/” class=”read-more-link”>Read more
The post target=”_blank” href=”https://qrznow.com/7-band-hf-cobweb-antenna-1-kw/”>7 BAND HF COBWEB ANTENNA – 1 KW appeared first on target=”_blank” href=”https://qrznow.com/”>QRZ NOW – Ham Radio News.
