Difference between revisions of "Loops"
From The RadioReference Wiki
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==Commercial Units== | ==Commercial Units== | ||
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===MW and/or SW coverage=== | ===MW and/or SW coverage=== | ||
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==Homebrew Designs== | ==Homebrew Designs== | ||
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* [https://www.rtl-sdr.com/a-homemade-magnetic-loop-antenna-used-with-rtl-sdr-direct-sampling/ A Homemade Magnetic Loop Antenna] | * [https://www.rtl-sdr.com/a-homemade-magnetic-loop-antenna-used-with-rtl-sdr-direct-sampling/ A Homemade Magnetic Loop Antenna] | ||
* [http://www.kr1st.com/swlloop.htm A Magnetic Loop Antenna for SWL] | * [http://www.kr1st.com/swlloop.htm A Magnetic Loop Antenna for SWL] | ||
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* [https://swling.com/blog/2020/04/more-about-hacking-vga-cables-to-make-binocular-ferrite-cores/ More about hacking VGA cables to make binocular ferrite cores] | * [https://swling.com/blog/2020/04/more-about-hacking-vga-cables-to-make-binocular-ferrite-cores/ More about hacking VGA cables to make binocular ferrite cores] | ||
* [https://swling.com/blog/2021/08/grayhats-ncpl-noise-cancelling-passive-loop-antenna-tweak/ Greyhat's Noise Cancelling Passive Loop tweak] | * [https://swling.com/blog/2021/08/grayhats-ncpl-noise-cancelling-passive-loop-antenna-tweak/ Greyhat's Noise Cancelling Passive Loop tweak] | ||
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* [http://www.home.earthlink.net/~christrask/Indoor%20Loop%20Antenna.pdf A Varactor Tuned Indoor Loop Antenna (PDF)] | * [http://www.home.earthlink.net/~christrask/Indoor%20Loop%20Antenna.pdf A Varactor Tuned Indoor Loop Antenna (PDF)] | ||
* [http://www.eham.net/articles/18699 Balanced Loop Antenna Preamp/Tuner] via eHam | * [http://www.eham.net/articles/18699 Balanced Loop Antenna Preamp/Tuner] via eHam | ||
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* [[Media:Electrically Small Resonant Loop for Shortwave.pdf|Electrically Small Resonant Loop for HF ((PDF)]] | * [[Media:Electrically Small Resonant Loop for Shortwave.pdf|Electrically Small Resonant Loop for HF ((PDF)]] | ||
* [http://g0cwt.co.uk/magloops/new_page_2.htm The G0CWT Small Tuned Loop] | * [http://g0cwt.co.uk/magloops/new_page_2.htm The G0CWT Small Tuned Loop] | ||
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* [http://home.earthlink.net/~christrask/Wideband%20Loop%20Antenna%20Matching.pdf Wideband Loop Antenna Matching Networks (PDF)] | * [http://home.earthlink.net/~christrask/Wideband%20Loop%20Antenna%20Matching.pdf Wideband Loop Antenna Matching Networks (PDF)] | ||
* [[Making a Receive Loop Antenna]] | * [[Making a Receive Loop Antenna]] | ||
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* [https://forums.radioreference.com/threads/zip-cord-rx-loop-in-15-minutes.383117/ Zip Cord Rx Loop in 15 Minutes] thread | * [https://forums.radioreference.com/threads/zip-cord-rx-loop-in-15-minutes.383117/ Zip Cord Rx Loop in 15 Minutes] thread | ||
Revision as of 20:15, 18 August 2021
The idea of constructing loops for receiving radio signals is almost as old as the industry itself. Always popular with MW DXers, HF loops have gradually been gaining acceptance. Although signal nulling with such loops is always a difficult challenge, their lower noise characteristics are a big plus for folks in noisy environments, such as condos or apartments. Smaller loops almost always need some sort of amplification and/or matching. If you are building a loop outdoors, Safety First. Make this link a must read. Don't become a statistic!
Contents
Commercial Units
- For antennas that cover only MW (or MW / LW) please see the Antennas section of the MW DXing and Broadcasting article
MW and/or SW coverage
- Active HF Frequency Loop for Portable Scanner via eBay
- AMLA150 Magnetic Loop Antenna
- An Active Low Cost HF Loop from the UK
- AOR LA400 (via Universal website)
- Chameleon CHA RXL loop (pre order)
- Elad Baby/Mini Loops
- KA7U - 1 Meter Loop Antenna
- The K-W180WLA Battery Powered Active Loop via rtl.sdr
- MegaLoop FX (in German)
- MFJ-1886
- MFJ-1886X 220v version of the above
- MLA-30 Magnetic Loop Antenna
- MLA-30 Plus Magnetic Loop Antenna
- NTI MLFX Active loop
- NTI ML060 Active Loop
- Palstar LA-30 Loopstick Antenna
- Passive HF/VHF Loop For Portable Scanner via eBay
- DX Engineering / Pixel RF PRO-1B Active Loop
- Sony AN-LP1 (via Universal website - discontinued)
- USAP Aperiodic Loop Antenna
- YouLoop
- Desktop Active Loops
- Grahn ML3 (page is in German)
- A preliminary review of the PK Loop C-LOOP-HDSW6-18
- from SWLing.com
- Larry’s variation of the W6LVP amplified magnetic loop antenna
- Review of the DoxyTronics 8020CA Magnetic Loop Antenna
- The Signal Sweeper-How to Build a Portable Wellbrook Loop Antenna
Wellbrook Antennas
EHam reviews of Wellbrook Antennas
Other Wellbrook Reviews
- The Pixel Technologies PRO-1A and Wellbrook ALA1530 Active Loop Antennas Compared PDF article
- Wellbrook ALA-1530-Interesting Loop for Small Gardens
W6LVP Loops
- W6LVP Loop with Power Inserter
- See the bottom of this page for the same loop with a T/R switch for hams
- eHam Reviews of the W6LVP with T/R switch
- W6LVP Magnetic Loop Antenna Experimenter's Kit
- W6LVP Portable loop
Amateur Radio Loops (transmit capable)
- AlexLoop
- Alpha Antennas Magnetic Loop Antennas page
- Build the K1FM Loop
- BTV.cz (in Czech)
- Chameleon Antennas
- Express Precise Loop
- Icom AL-705 Magnetic Loop
- Indoor 20m loop (QRZ forums)
- Magloop
- Magnetic Loop Antenna for 160-40m
- MFJ Loops and related
- MLA-S (MMT) v3
- OM0OET Ultralight Magnetic Loop Antennas
- Practical Communications
- PreciseLOOP HG-1 Magnetic Loop Antenna
- The Start - HF Copper Loop for 40, 80 and 160m
- Welcome to DJ3TZ's Small Tuned Loop Antenna Page
- WiMo Antennas and Electronics
- Wall Loop for 20m (QRZ.com)
- Wonder Wand Antennas WW-WL750
- W4OP antennas via LNR Precision
- A review of the W4OP portable magnetic loop antenna via SWLing.com
- 80 Meter Frame Antenna
Homebrew Designs
MW and/or SW
- A Homemade Magnetic Loop Antenna
- A Magnetic Loop Antenna for SWL
- A Wide band active receiving loop
- Australian 1m Loop
- Crossed Parallel Loop Antenna Build (via Radio Hobbyist)
- DXZone-Loop Antennas
- K1FM Mini Magnetic Loop 2.0
- PA3GZK Wide Band Active Loop Receiving Antenna
- The Carpet Loop (via Hard Core DX)
- The Hermes Loop at VK1HW
- The KK5JY Porch Loop Receiving Antenna
- The Loop on the Ground (LOG) Antenna
- The Small Vertical Loop for HF Reception
- The W2PM Mini Diamond Receiving Flag
- VE1ZAC Magnetic Receive Loop
- WB5DYG Shielded Loop Antennas (PDF)
- Wellgood Loop
- 80/160m Coax Receiving Loops
- Make Your Own YouLoop (from SWLing.com)
- How to build a noise cancelling passive loop antenna
- Hack a broken VGA Cable to make a binocular ferrite core for your loop antenna
- More about hacking VGA cables to make binocular ferrite cores
- Greyhat's Noise Cancelling Passive Loop tweak
- From SWLing.com
- Backpack Shack 2.0-A homebrew wideband magnetic loop antenna
- Magnet Wire Vertical Loop (stealthy)
- Paul’s large aperture “Volleyball Net” loop antenna
- How to build a passive resonant transformer coupled loop for HF
Technical
- A Varactor Tuned Indoor Loop Antenna (PDF)
- Balanced Loop Antenna Preamp/Tuner via eHam
- Electrically Small Resonant Loop for HF ((PDF)
- The G0CWT Small Tuned Loop
- HF active receiving loop antenna
- Joe Carr's Loop Antennas Handbook via Universal Radio
- Wideband Loop Antenna Matching Networks (PDF)
- Making a Receive Loop Antenna
- Zip Cord Rx Loop in 15 Minutes thread
- Amateur Radio (Transmit Capable)
- Small Magnetic Transmitting Loop for 80-20 meters
- Portable Small Transmitting Loop for 40-17 meters
- Slinky Small Transmitting Loop
Loop Amplifiers/Kits
- Add on Loop Amplifier
- Amplifier for Internal Antennas
- Cross Country Hi Z Amplifier
- Cross Country Wireless Loop Amplifier
- Loop Amp for Hula Loop SW Radio
- LZ1AQ Active Antenna Amplfier
- Modified M0AYF Amplifier (PDF)
- RF Preamp Kit
- Wellbrook LA100LN-M (NA version)
- W6LVP Experimenter's Kit
- 2x J310 Push-Pull Low-noise HF pre-Amplifier (30 KHZ - 30 MHZ)
HF Wire Loops
- AS-SAL-30 Mark II Shared Apex Loop Array
- Full Wave Loop Antenna
- Horizontal Loop Antenna Experiments via SWLing.com
- H5ANX Mk4 Delta Loop Design (EHam)
- K4TR Full Wave Loop
- Loop Antennas (wikipedia)
- MFJ Loop Tuners
- N4KC's Skywire Horizontal Loop
- Palomar Engineers
- RadioWorks - Loop Antennas
- RTL-SDR.com YouLoop
Mailing Lists and Facebook
- Groups.io reflectors
- Facebook groups
- Active Loop Antennas
- Loop on the Ground
- Magnetic Loop Antennas
- Magnetic Loop 2.0
- MLA30 User's Group
- 2e0ero Magnetic Loop antennas
YouTube
- Return to Antennas
- Return to HF Military Communications
- Return to Shortwave Radiogram Gateway