Been a new ham, I build all kind of antennas; in a process of doing this I accumulated long list of internet references I am sharing below. I will be updating it, deleting old/outdated/not important references and adding new. Due to my present QTH the main focus is compact/limited space antennas, but the list is not strictly limited to this subject. It is a bit chaotic as it originates from the text file I have been dumping my findings to for many month, but proven to be useful, so here it is:

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TOPICS

• DIPOLES AND DOUBLETS
• LOOPS
  • Magnetic loops
• YAGIS
  • Moxons
  • Portable hexbeams
• ZEPPS AND J-POLES
  • J-pole and horizontal Zepp
  • OCF Colinear for 80m (Rus)
• VERTICALS
  • Half-square and bobtails
• ON WIRE ANTENNAS
• ON ANTENNA TRAPS
• TOOLS, TIPS AND STUFF
  • DIY VHF/UHF antennas
  • DIY Band Pass Filters

last updated Mar 01, 2018

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ON ANTENNA TRAPS

• http://www.vwlowen.co.uk/java/trap.htm
• http://www.iw5edi.com/ham-radio/?how-antenna-traps-work
• http://www.w8ji.com/traps.htm

YAGIS

• 2 element beams
• 2 and 3 element mini yagis
• 2 el trapped beam
• Loaded Yagi for 20m
• 20m half-size 2 element Yagi
• Mini Horse Yagi (portable 3 element wire beam)
• Short boom Yagis from Raibeam

  Moxons

  • Moxon Antenna Project Website
  • Lightweight wire moxon
  • Notes on construction
  • Trapped 40m moxon
  • Loaded 40m moxon
  • Trapped multibander moxon
  • 17+20m Moxon
  • Vertical wire moxon
  • Moxon beam notes
  • Moxon calc
  • Wire moxons

  Portable hexbeams

  • Portable HexBeams, readymaid
  • Hexbeams antenna parts
  • Portable HexBeams, how-to I
  • Portable HexBeams, how-to II
  • Portable HexBeams, how-to III (** Note: this one!!)

DIPOLES AND DOUBLETS

• Multiband Dipoles Compared (ARRL Publication)
• C-pole portable verticals
• C-Pole
• Compact rotatable dipole (Cushcraft D3)
• "Cobra" (folded dipole)
• Fan dipole I
• Fan dipole II
• Doublet antenna fed with ladder line
• Space saving dipoles from AlfaDelta (readymaide) (** Note: narrow BW on 40m->needs tuner)
• 10-40m in an attic
• Hamstick dipole in vertical configuration (*Note: My 40m at 30 ft hasn't confirmed this so far...no contacts)
• Nice OCFD
• Folded skeleton sleeve antenna
• The K4VX Linear-Loaded Dipole for 7 MHz ("ladder line dipole")
• short 80/40/20/15m inverted-V doublet ("NJQRP Squirt")
• G7FEK antenna: short 46ft/14m multiband 80-12m EF dipole
• Linear loaded dipoles

LOOPS

• Horizontal loop multiband antenna
• Horizontal loop antenna, modeling
• Portable Delta-loop 30-6M 300W or 1KW, readymade
• DIY 80 m spiral loop antenna

  Magnetic loops

  • Good read!
  • Magloop from Slinky coil
  • Another good read on magloops
  • DIY high power magloops
  • Good work, with construction details (**Note: mine like his 80m, from copper straps)
  • Magloop project report from M0UKD
  • Thick 4" loop for 40m by Alex PY1AHD
  • Nice read on Magloops, with references
  • Receiving loop
  • Another Receive-only loop
  • The Rockloop (QRP)
  • Foil loop from Japan
  • Some detail on building
  • Yet another square loop
  • Square magloop details, in Russian
  • Big loop, ferrite coupling, in details
  • another qrp loop made from RG213
  • Material - Heliax AVA Coaxial Cable
  • Multiply loops antenna
  • Copper strap for building magnetic loop - 1.5"/25'
  • Copper strap for building magnetic loop - 3.0"/25'
  • Copper strap for building magnetic loop - 2.0"/25'
  • Copper adhesive tape
  • Remotely controlled capacitor for Magloop tuning control
  • High voltage air gap calculator
  • Capacitors for Magloop tuning control

ZEPPS AND J-POLES

• J-pole and horizontal Zepp
• OCF colinear for 80m (RUS)

VERTICALS

• MFJ Wip 17ft
• MFJ-5904 RF Design box
• MFJ air wound coil for the telescopic 17ft wip
• On portable vertical
• On radials
• Modifying hamstick for 500W (**Note: the coil is here)
• 40-10m Twinlead fishing rod vertical
• Aerial 1/2 wave vertical end-fed vs proper dipole
• Instructions for EFHWA
• EFHW, detailed discussion
• Multiband vertical no radials (coax as a counterpose) (*Note: "3132 9:1 balun" is probably 9132 9:1 Unun)
• Linear loading for vertical antenna ("Flagpole antenna")
• Shortened vertical for 40m (2/4 height)
• Short helically wound vertical for 20m
• Short helically wound vertical for 160m
• Short (2m) indoor multiband vertical antenna

  Half-square (phased verticals)

  • One from Hy Power Antenna Company, premaid
  • "Using the Half-Square Antenna For Low-Band DXing" ARRL pub. 1996
  • Post on HS in QRZ forums
  • Half-square, half-square double and bobtail
  • Bobtail
  • Bibliography

WIRE ANTENNAS

• Wire Antennas For HAM Radio
• 40m wire antennas comparison

TOOLS, TIPS AND STUFF

• Unit Circle Coordinate Calculator
• Helical Coil Calculator
• Testing coax
• On photon model in electromagnetic theory
• Soldering PL-259
• On coax chokes
• Good and Bad Parallel Feedline Lengths
• Soil parameters
• Battery power
• Tree hanging tools and tips
• Antennas in trees
• 22mm Mirco Swivel Block
• Collection of PDFs, many on antennas
• Telescopic fiberglass masts (**Note: mine is MK-6 HD 43.3 FT Mast)
• On SWR/resonance I
• On SWR/resonance II
• On limited space antennas
• "In Practice" pages by GM3SEK
• On RFI in shared living
• MFJ-1622: Portable wip 2-40m
• Another portable multiband vertical
• Compact (8.5') multiband sticks
• 500 W Hamsticks
• Hamsticks: HS vs Procomm vs Workman (** Note: also read this)
• $150 Portable wip 10-40m
• $140 Portable wip
• $269 500W 10-40m portable vertical (Alfa Antenna Promaster Jr.)
• Short wire antennas (also read this post on ULTIMAX)
• Portable Tri-Bander
• Notebook antenna
• On SWL
• $2 4ft fiberglass post with wire clips

  DIY VHF/UHF antennas

  • 2m vertical
  • Quick and simple 2m grounplane
  • DIY 2m dipole antenna
  • Dual-band J-pole
  • 70cm-10m beams
  • simple 2m ladder line
  • Multiband antennas HF VHF
  • Spiral Tak-Tenna

    DIY Bandpass Filters

  • https://www.youtube.com/watch?v=sYiM2cqUNk8
  • http://www.n1nc.org/Filters/
  • http://www.kg4jjh.com/pdf/Contest Bandpass Filters.pdf
  • http://www.kg4jjh.com/bpf.html>www.kg4jjh.com/bpf.html
  • http://www.iceradioproducts.com/filtersrf.html
  • http://www.morganmfg.us/>http://www.morganmfg.us/
  • https://www.dunestar.com/store/product-info.php?HF-Triplexer-Filter-pid6.html

Unsorted...

        HF Beacons, transmission schedule
        https://www.ncdxf.org/beacon/index.html#transmission

	Isotron compact 40m antenna
	 http://isotronantennas.com/index.php?main_page=product_info&cPath=1_4&products_id=4

	Hentenna
	 http://www.hamuniverse.com/hentenna.html
	 http://www.hamuniverse.com/6mhenk5uss.html
	 http://www.hamuniverse.com/iw6dfw%202m%20and%2070cm%20hentenna%20project_DRAFT.pdf

	Wire
	 https://www.amateurradiosupplies.com/category-s/260.htm
	 http://thewireman.com/index.html

	Antenna tuners
	 http://www.sgcworld.com/store/index.html

	LDG antenna tuner
	 http://www.ldgelectronics.com/c/252/products/17/49/4
	 the one with batteries: http://www.ldgelectronics.com/c/252/products/17/9/1

	Ugly balun
	 http://www.hamuniverse.com/balun.html
	 https://www.dxengineering.com/parts/dxe-8x
	 https://www.dxengineering.com/parts/dxe-pl259

We went for the Thanksgiving week to New Smyrna Beach, the coastal town just North of Cape Canaveral.

I used the opportunity to test my portable setup with AGM battery (this one in this box):

Passed the test today at Everglades Radio Club in Homestead. Hallelujah!

I am using MFJ hamsticks for 20m and 40m bands in dipole configuration(s), i.e. installed in MFJ-347 mount. Here is the first post in this blog on MFJ-2220 and MFJ-2240 dipoes on 38ft/10+m Max-Gain fiberglass pole I use. In a word, 20m dipole works well for me. I use it to make DX as well as stateside contacts. It is not beam antenna, it has inherent loss and not all power makes it to the far field, but it definitely works. It also has some directivity at the height I use it (again 33-38ft, i.e. a little more than 10m). As for 40m dipole at this height, it doesn't work very well, and finally I became curious enough to overcome my laziness and did some modeling in 4nec2 (4nec2 is popular free antenna modeling software -- get your copy).

All antennas safely inside the house and shutters up on all windows, here is the video from security cam above my door:

"Hamstick dipole" MFJ-2220 deployed on MFJ-1818EX tripod

Intro

This is the second post on phased verticals. If you have not seen the first, here it is >>Half-square antenna....
After half-square antenna, I checked few similar configurations, adding phasing lines and vertical elements. Here is the popular antenna, usually called "double half-square":

As you see, it is basically 2 half-square antennas put together and fed in the center. The length of the phasing lines is still L/2, so left and right radiators emit in phase:

I am going to test a stealth antenna hidden in the trees close to my condo building. For that, I am looking into half-square design which supposedly will be able to provide some directivity/rejection at low height I am limited to. Here in this post I will be dumping my finds and 4NEC2 models.

The basic design we'll start from:

It had been just one month of my HF activities but it feels like I have been doing this for a very long time. I had, and still have, an immense fun playing with my equipment, making my first contacts, sending and receiving QSL cards and chasing DX stations.

I know my signal report was not perfect with my home-brew small antennas and modest 100 watts -- so thank you for taking my call guys:

and here is how you create it:

The loaded 20m MFJ-2220 dipole on the fiberglass telescopic pole MK-6-HD, to be exact.

Here is the short review of the pair:

The usual; I live in condo community with strict HOA rules; antennas outside of my unit is out of the question. Fortunately, I have access to the attic and the roof is asphalt shingles, i.e. its RF transparent. Unfortunately, the attic is very small, about 20x25ft (6.1x7.5 meters).