Central States VHF Society

Exploring the World Above 50MHz since 1965

  • Digital Communications

    A great number of exciting new digital operating modes have developed, largely because of the availability of personal computers, soundcards, and advanced software. But amateur digital communication began in earnest in the late 1940's (if you don't count Morse as a digital mode!) when hams worked out techniques of connecting mechanical Teletype keyboard/printers to amateur gear using FSK and AFSK modulation. WSJT has become a very popular tool for digital communications. FSK441 mode is in use for meteor scatter contacts and JT65 is popular for terrestrial communications.More Info
  • EME Moonbounce

    Amateur radio (ham) operators utilize EME for two-way communications. EME presents significant challenges to amateur operators interested in working weak signal communications. Currently, EME provides the longest communications path any two stations on Earth can utilize for bi-directional communications. Amateur operations use VHF, UHF and microwave frequencies. All amateur frequency bands from 50 MHz to 47 GHz have been used successfully, but most EME communications are on the 2 meter, 70-centimeter, or 23-centimeter bands. Common modulation modes utilized by amateurs are continuous wave with Morse Code, digital (JT65) and when the link budgets allow, voice..More Info
  • Aurora and Solar Weather

    The interaction between Earth's magnetic field and Solar particles is a complex and mysterious field of science. The storm events involve high electric currents in the ionosphere and vast amounts electric power affecting to great many things. One of the ways to observe what is happening up there, is to detect the effects of these phenomena to non ionizing long wave electromagnetic radiation - radio waves.More Info
  • VHF Contesting and Rover Operations

    Hams have been putting stations in their cars since the Twenties (1920's that is). Today, there is great satisfaction in facing the challenge of installing a transceiver in our small cars and pick-ups, using somewhat inefficient antennas, and still being able to make contacts with hams thousands of miles away while "tooling" down the highway.More Info
  • Annual Technical Conference

    Every year since 1968, during the last weekend in July, the Central States VHF Society hosts an annual technical conference. There are two days of technical presentations, antenna range gain measurements, noise figure measurements, a flea market, and often times a vendor area. It's a great time to learn about weak signal VHF communications and an excellent place to network and catch up with old friends.More Info

2010 Antenna Gain Results

Tested in St Louis, MO - July 23, 2010


144 MHz CallDesignGain (dBd)
WB0TEMRef Ant (11 El K1FO)12.2
AB0RX11 element HB11.4
N0OBI3 element HB5.7
WA5VJB19 El 432MHz K2RIW-0.6
WA5VJB13 El 220MHz WB0TEM>-20
222 MHz CallDesignGain (dBd)
AB0RX15 element HB14.4
WB0TEMRef Ant 13 El WB0TEM13.2
K5VHK5VH Superwheel5.2
WA5VJB11 El 144 MHz K1FO-3 @ 30°
WA5VJB19 El 432MHz K2RIW-6.8
432 MHz CallDesignGain (dBd)
WA0ARMstacked pair 15 El W0EYE16.4
WB0TEMRef Ant 19 El K2RIW14.8
K0CQ19 El K2RIW-derived #214.2
K0CQ19 El K2RIW-derived #1 taped14.0
WA0ARM15 El W0EYE (bottom of stacked pr)13.9
WA9KRT23 element VE7BQH13.8
WA0ARM15 El W0EYE (top of stacked pr)13.7
AB0RX23 element HB Yagi13.6
N0XPM-Squared 440-1813.6
N0OBI7 element HB Yagi12.2
KD4NOQ10 elelment cross Yagi12.2
K4QF10 elelment HB Yagi10.7
W0FMC5 element Arrow Yagi9.3
N0RWW6 element ATV Yagi7.0
K5VHK5VH Superwheel4.4
WA5VJB11 El 144 MHz K1FO0.8
WA5VJB13 El 220MHz WB0TEM-9 @ 45°
902 MHz CallDesignGain (dBi)
WA0CNS21 element F9FT rebuild15.8
NG9R10 element cheap Yagi13.4
KD4NOQ9 element cheap Yagi12.6
KA2KQM11 El Sinclare 3Y415-SLXSMN9.7
WA5VJBReference Horn9.0
KD4NOQPopcorn Can Horn8.9
WA5VJBLHCP cavity-backed spiral dBic3.0
WA5VJBRHCP cavity-backed spiral dBic2.2
WB0DBSBicone omni>-10
1296 MHz CallDesignGain (dBi)
AF4JF55 element loop Yagi20.8
AB0RX45 element loop Yagi19.2
WA0CNS28 element loop Yagi17.8
W0FMS20 element Yagi16.7
WA5VJBReference Horn12.2
KD4NOQHB 432/1296 Yagi8.0
K5VHAlford Slot6.8
WA5VJBRHCP cavity-backed spiral dBic 1.5dB Axial ratio1.2
WA5VJBMilitary 4" dia conical spiral 3.2 dBic0.2
AB0RXCom'l Yagi (not functional)>-10
2304 MHz CallDesignGain (dBi)
KO0Z4' offset dish VJB LP feed (range a bit short for this gain)29.7
WA5VJBReference Horn12.5
KD4NOQ1 lb Coffee Can5.0
KD4NOQChocolate Can5.0
KD4NOQHB Double Diamond4.5
WB0DBSOmni sector horn Bicone3.0
3456 MHz CallDesignGain (dBi)
KO0Z4' offset dish VJB LP feed (range short for this gain)30.5
W0FMSPatch Antenna7.5
KD4NOQCantenna Horn7.0
KD4NOQDouble Diamond ove jar lid<0
5760 MHz CallDesignGain (dBi)
KO0Z4' offset dish VJB LP feed (range short for this gain)30.5
W9SZ2' dish with RMX PCB feed23.6
WA5VJBReference Horn22.1
WA5VJB16 element Patch array #117.2
WA5VJB16 element Patch array #2 (optimized 5.9-6.0GHz)15.3
10 GHz CallDesignGain (dBi)
K0MHCChannel Master offset dish (range short for this gain)44.9
W0FMS24" offset w/W1GHZ feed #134.0
K0MHC22" Directive Sys dish w/Dir. Sys feed33.7
KO0Z4' offset dish VJB LP feed (feed focus not adjustable)32.3
K4QF18" Direct TV dish w/W1GHZ feed33.7
W0FMS18" offset diah w horn feed31.5
W9SZ2' dish w/splash feed closer to dish30.5
W9SZ2' dish with splash feed29.0
N0OBI18" Direct TV dish w/Cu H2O pipe feed & WG28.5
WA5VJBReference Horn 3.5 x 3 x 323.5
WB0DBSDual ridged waveguide feed Port 19.4
WB0DBSDual ridged waveguide feed Port 28.3
WB0DBSDual ridged waveguide feed Port 2<0
24.1 GHz CallDesignGain (dBi)
WA2VOI13" dish w/Cassigrain feed33.7
W0AUSHorn 7.6 x 10.5 x 22.7 cm24.9
W0AUSHorn 6.3 x 8.9 x 13.8 cm23.3
WA5VJBReference Horn20.7
W0AUSHorn 4.3 x 5.8 x 6.7 cm20.5
WB5LJCReference Horn 3.4 x 4.3 x 4 cm18.4

2009 Antenna Gain Results

Tested in Chicago, IL - July 24, 2009


144 MHzCallDesignGain (dBd)
W0FYHB (Cushcraft derived)14.7
K9GYArrow 4 element8.4
N5VYNArrow 144/432 MHz5.9
N0UUHB Moxon4.7
W0FMSHB 2 element Moxon3.5
VE3BFMStacked H-OCF-omni-0.6
VE3BFMHorizontal OCF-omni-1.1
222 MHzCallDesignGain (dBd)
N9GH10 element HB11.5
N0EDV6 element HB9.6
AB9OU6 element Log Periodic7.1
K9GYM2 Loop1.8
432 MHzCallDesignGain (dBd)
K3IWK27 element HB yagi16.2
W0FY16 element KLM15.8
K3IWK22 element HB yagi14.9
WA9KRT23 element VE7BQH HB yagi14.8
K9SRB12 element HB yagi, 439 MHz13.3
N9GH16 element HB plumbers delight11.4
AB9OU14 element KLM11.1
K9SRB11 element wood boom HB 439 MHz yagi10.8
N0EDV11 element WA5VJB HB yagi8.3
N5VYN7 element ARROW yagi8.2
AB9OU6 element HB yagi8.2
WB9IDDQuad loop0.3
902 MHzCallDesignGain (dBi)
WA9FIH23 element F9FT yagi18.3
AB9OU23 element F9FT yagi14.9
AB9OU7 element SCALA yagi11.4
N9LHD6 element yagi10.9
N9LHD8 element MOTOROLA yagi9.0
W9XA6 element MAXRAD yagi8.2
WB0DBSEMCO 3115 double ridge horn5.7
1296 MHzCallDesignGain (dBi)
WA9FIH24 element HB LP yagi17.2
WA9FIH15 element KLM yagi17.0
AB9OU24 element HB LP yagi16.4
K0PFX24 element K1FO LP yagi16.0
WA5VJBReference Horn12.1 **
W0FMSPatch antenna9.4
WB0DBSEMCO 3115 double ridge horn9.0
W9XACross feed Horn8.8
2304 MHzCallDesignGain (dBi)
KB0PE4 foot dish, WA5VJB feed20.2
N9LHDSA 12-1.718.4
N9LHD8 x 6.75 x 11.75 horn13.5
N9LHDMaxrad Z65112.6
N9LHD7.5 x 5.0 x 9.5 ridged horn12.4
WA5VJBScientific Atlanta Reference Horn12.4 **
N9LHDMaxrad Z65112.3
WB0DBSEMCO 3115 Double ridge horn12.0
W0FYHyperlink HG2415y10.0
VE3ADGPatch linear8.0
2405 MHzCallDesignGain (dBi)
WA5VJBScientific Atlanta Reference Horn12.9 **
W0FYHyperlink HG2415Y11.1
W0FMSCircular patch8.4
W0FMSCircular patch5.7
3456 MHzCallDesignGain (dBi)
KB0PE4 foot dish with WA5VJB feed34.5
N9LHD8.0 x 6.75 x 11.75 horn16.0
WA5VJBScientific Atlanta Reference Horn15.5 **
N9LHDNarda 64313.5
N9LHDNarda 64313.3
N9LHDRidged horn12.9
WB0DBSEMCO 3115 double ridge horn9.9
4950 MHzCallDesignGain (dBi)
WA5VJBHB 16" dish w/Vivaldi 5-20 GHz Feed22.7
AF8Z8 Patch Array Ant "A"15.5
WA5VJBReference Horn14.7
AF8Z8 Patch Array Ant "B"14.2
AF8Z8 Patch Array Ant "C"6.9
5760 MHzCallDesignGain (dBi)
KB0PE4 foot dish with WA5VJB feed38.5
KB0PE35 inch dish with dual W5LUA feed29.0
KB0PE39 x 29 inch dish with W5LUA feed26.2
KF8QL18 X 24 inch dish with W5LUA feed25.0
WA5VJBFXR Reference Horn22.1 **
N9LHD7.5 x 5.0 x 9.5 ridged horn16.5
N9LHDNarda 641 horn16.0
N9LHD3.5 x 2.75 x 5.5 horn13.0
WB0DBSEMCO 3115 double ridge horn12.9
WA2VOI2.37 x 1.25 x 2.0 horn9.8
10 GHzCallDesignGain (dBi)
KB0PE35 inch dish with W5LUA feed39.2
W9ZIH4 foot dish with scalar feed37.6
KB0PE4 foot dish with WA5VJB feed35.6
WB9PNU20 inch DSS dish35.1
N2CEI2 foot ENDWAVE FF10-25HPA35.1
WB9PNU2 foot MACOM with button hook feed34.6
K0PFX18 inch DSS dish, modified feed32.5
KB0PE20 inch dish, modified feed32.4
WA9O18 inch DSS dish, HB feed horn31.9
KF8QL18 x 24 inch with W5LUA feed31.6
KB0PE20 inch dish with modified feed30.8
KB0PE39 x 29 inch dish with W5LUA feed27.1
AF4JF12 inch dish with yagi feed25.8
WA5VJBScientific Atlanta Std Gain Horn23.6 **
K0CQ5.25 x 6 x 12.5 horn23.2
WA2VOI8.25 x 5.5 x 10 horn22.3
WA2VOI5 x 4 x 6 horn21.7
N9LHDAT-39 horn 3.5 x 3 x 319.7
N9LHDNarda 641 horn19.0
K0CQ12 inch COLLINS slot-plate array17.8
WB0DBSEMCO 3115 double ridge horn15.1
N9LHD7.5 x 5 x 9.5 ridged horn14.6
K0CQ12 inch Poly Rod array14.1

2007 Antenna Gain Results

Tested in San Antonio, TX - July 27, 2007


No tests accomplished below 902MHz due to test equipment failure.
902 MHz CallDesignGain (dB)
WA5VJBTDJ-7500A-15 15 element Yagi14.8
WA5VJBCommercial 15 element Yagi14.2
WA5VJBCommercial 13 element Yagi13.2
WA5VJBCommercial 11 element Yagi12.1
K5VHCommercial Horn 16 x 12 x 12"10.0
NM5MCommercial 5 element Yagi9.5
WA5VJBDracom 400-1000 PCB LP5.6
WA5VJBHB - 3 High Series stack of PCB Big Wheels4.8
1296 MHz CallDesignGain (dB)
N0UK24 ele Directive Systems Loop Yagi18.4
N0OBG22 element ATV M sq Yagi17.1
N0UK14 ele Directive Systems Loop Yagi15.8
K8XKHB - 11 ele Cheap Yagi14.0
K5VH16 x 12 x12" horn13.7
WA5VJBHB - 11 ele Cheap Yagi12.8
WU8O7.5" dia can8.7
K5PJRSector Dish 23"7.7
WA5VJBDracom 400-1000 PCB LP5.3
N0OBG5 1/2 wave Mag mount vert<-15
2304 MHz CallDesignGain (dB)
K5LLL20" WiFi dish16.2
WA5VJB14 ele WiFi Yagi14.4
WA5VJB6 x 9.5" Corner Reflector11.3
2450 MHz CallDesignGain (dB)
WA5VJB14 ele WiFi Yagi14.9
K5LLL20" WiFi dish14.5
WA5VJB6 X 9.5" Corner Reflector10.6
3456 MHz CallDesignGain (dB)
WA5VJB11" dish with Vivaldi feed16.6
WA5VJB8 x 6 x 11" Avcom Horn15.5
K5VHWJ Wide band horn10.6
5760 MHz CallDesignGain (dB)
KB0PEC/HB - 34" Dish Dual band LUA Feed30.7
K5LLL24" Directive Systems dish and feed26.7
WA5VJB11.5 x 9 x 17.5" FXR Horn21.7
KA0KCIHB - 77 ele Loop Yagi21.4
WA5VJBHB - 11 Dish with Vivaldi Feed17.9
WA5VJBHB - 16 Patch array17.1
10 GHz CallDesignGain (dB)
KB0PEC/HB - 34" dish with LUA dual band feed35.8
WA5VJBC/HB - 11 inch dish with Vivaldi Feed22.4
K5GNA4.2 x 3.5 x 4" horn20.5
W0AUS5 x 4.5 x 6" horn20.2
K7ICWAT-39/AP 3.6 x 3.1 x 3" horn17.4
WA5VJBNarada Horn16.6
24 GHz CallDesignGain (dB)
WA5VJBReference Horn20.7
WA5VJBHB - 11" dish with Vivaldi Feed20.7
K5GNAHB - Musical Trumpet Horn20.1
N5YCHB - 1.6 x 1.3 x 1.2" horn18.7

2008 Antenna Gain Results

Tested in Wichita, KS - July 25, 2008


144 MHz CallDesignGain (dBd)
WA2VOI4 Element "Cheap Yagi"7.8
WA5VJB5 inch DDRR-6.9
WA5VJB0.1" x 3" DDRR-20
222 MHz CallDesignGain (dBd)
W9WA13 foot 12 Element Yagi12.8
WD5AGO13 foot 12 Element Yagi12.8
W0ZQ5 foot 8 Element Yagi11.0
WA2VOI4 Element "Cheap Yagi"7.8
432 MHz CallDesignGain (dBd)
WA9KRT16.5 ft 23 Element Yagi15.6
WA9KRT16.5 ft 23 Element Yagi #215.2
KA2KQM432 RIW14.7
KA2KQM10 element Corner Reflector 4-10B11.2
WA2VOI2 foot 6 element "Cheap Yagi"9.0
WA5VJBModified 2 Element 460/432 PCB Yagi2.0
KC9BIEM Squared Stacked HiQ Loops1.4
KC9BIEK5VH Super Wheel1.3
WA5VJB2 Element 460 MHz PCB Yagi1.3
KC9BIEK5VH Super Wheel #20.3
902 MHz CallDesignGain (dBi)
WA5VJBWA5VJB Design 20 element 900-930 MHz Yagi16.7
WA5VJBCommercial LP Reference Antenna5.5
WA5VJBLog Element from Cell Phone tower5.2
WA5VJBStacked PCB Big Wheels2.3
KA9UVYOAL Big Wheel #11.1
KA9UVYOAL Big Wheel #20.3
1296 MHz CallDesignGain (dBi)
K0PFXHB 22 element Loop Yagi17.6
WQ0P35 element M squared July 7th mod17.1
WA2VOIHB Split Parabolid13.1
WD5AGOHybrid Feed (.76l Round w/scalar) 8.2 dBiC
5.6 H (Hybrid #1)
7.9 V (Hybrid #1)
8.2 H (Hybrid #2)
4.8 V (Hybrid #2)
K8EBHB Septum Feed (Square, 4 step) 6.9 dBiC
6.9 H (TX Port)
4.7 V (TX Port)
6.6 H (Rcv Port)
5.4 V (Rcv Port)
WB9PNUHB Septum Feed (Square, 4 step) 6.8 dBiC
6.8 H (TX Port)
5.9 V (TX Port)
6.6 H (Rcv Port)
6.7 V (Rcv Port)
K9JKHB 4 Element 144/432 MHz Herringbone LP, Degen Design LP-A210705.4
WA5VJBReference Antenna5.0
KF8QLDecibel 806-1998 MHz Ceiling Antenna3.1
KA9UVYOAL Big Wheel1.8
2304 MHz CallDesignGain (dBi)
WA5VJBHB 16 inch dish with Vivaldi 5-20 GHz Feed16.4
W9IIX28 el Loop Yagi15.8
W0AUSRidged Horn13.0
WA5VJBReference Horn12.4
VE3BFMCenturion CAF959988.2
WD5AGOHB Septum Feed (Round 0.8l 5-Step) 5.4 dBiC
5.4 H (TX Port)
6.1 V (TX Port)
4.4 H (Rcv Port)
5.4 V (Rcv Port)
VE3BFMBroadband PCB Monopole0.5
2425 MHz CallDesignGain (dBi)
WA5VJBHB 16 inch dish with Vivaldi 5-20 GHz Feed15.7
KD9SGCisco System Yagi13.9
W0AUSRidged Horn13.8
WA5VJBReference Horn13.1
AF8ZMT347015 With Ground Plane7.6
3400 MHz CallDesignGain (dBi)
WA5VJBReferance Antenna15.7
WD5AGOHB Septum Feed (Round 0.8l 5-Step) 7.4 dBiC
7.2 V (TX Port)
5.9 H (TX Port)
5.7 V (Rcv Port)
6.2 H (Rcv Port)
WD5AGOIMU Polarizer (0.69l) 7.4 dBiC
7.2 V (TX Port)
2.9 H (TX Port)
6.1 V (Rcv Port)
4.1 H (Rcv Port)
3456 MHz CallDesignGain (dBi)
W0AUSRidged Horn19.2
WA5VJBHB 16" dish w/Vivaldi 5-20 GHz Feed17.4
WA5VJBReference Horn15.9
4950 MHz CallDesignGain (dBi)
WA5VJBHB 16" dish w/Vivaldi 5-20 GHz Feed22.7
AF8Z8 Patch Array Ant "A"15.5
WA5VJBReference Horn14.7
AF8Z8 Patch Array Ant "B"14.2
AF8Z8 Patch Array Ant "C"6.9
5400 MHz CallDesignGain (dBi)
WA5VJBReference Horn15.8
AF8Z8 Patch Array Ant "B"15.2
AF8Z8 Patch Array Ant "C"9.7
AF8Z8 Patch Array4.8
5760 MHz CallDesignGain (dBi)
KB0PEHB 35" dish w/Dual band feed32.2
WA5VJBHB 16" dish w/Vivaldi 5-20 GHz Feed27.9
KF8QLHB 2' dish w/5GHz offset feed27.7
WA5VJBReference Horn22.2
AF8ZMT485028 64 el patch array21.7
W0AUSRidged Horn19.2
WA5VJBReference Horn #215.7
AF8Z8 Patch Array Ant "C"13.2
WD5AGOHB Septum Feed (Round 0.73l 5-Step) 12.6 dBiC
12.0 V (Port 1)
12.7 H (Port 1)
12.4 V (Port 2)
11.7 H (Port 2)
AF8ZMT482015 Gain Vertical9.7
AF8Z8 Patch Array Ant "B"6.2
AF8Z8 Patch Array Ant "A"5.7
9.3 GHz CallDesignGain (dBi)
N0OBGSectored Horn Radar Antenna28.0
WA5VJBReference Horn22.8
10 GHz CallDesignGain (dBi)
KB0PE35" dish w/Dual Band feed37.1
KF8QL2' dish w/Sheppard"s hook feed33.6
KF8QLHB 2' dish w/5-10 GHz dual band feed26.2
WA5VJBReference Horn23.6
N0OBGHorn Antenna20.1
KF8QL"H-plane" Sector Horn16.4
VE3ADQHB 3 / 4" Cu pipe feed9.6
VE3ADQHB 3 / 4" Cu pipe Chaparral feed5.8
N0OBG7' length 9.3 GHz Radar Antenna<-10
24 GHz - no entries for this band in 2008

2006 Antenna Gain Results

Tested in Bloomington, MN - July 28, 2006


144 MHz CallDesignGain (dB)**
W0VBM2 2M710.4
K0CQDir Sys NPM144-5LVA8.8
W0VB1st 5el of M2 2M28XP (vert)8.7
W0VB1st 5el of M2 2M28XP (horiz)7.7
WB5JMGHB Cu pipe "Grab 'n' Go"7.7
KF0AKHB Log PDA Sat A Ant "Eagle"7.6
KF0AKHB Log PDA Sat #2 Ant "Eagle"7.2
VE3BFM5 el LP 2m/432 RICO6.7
N0RHLHB Cut-down TV ant on sq boom6.5
KC0PNOHB measuring tape 3 el antenna5.3
K9JKDegen Design LP A210704.8
VE3BFM4 el V-LOG P Degen LPA210704.7
KD9SG5 el unk Mfg4.2
WA9HCZHB "Small" Wheel2.6
WB9OGMCom'l Big Wheel1.2
222 MHz CallDesignGain (dB)**
WB9OGMCom'l Big Wheel4.4
K9JKDegen Design LP A21070 Back Gain3.8
K9JKDegen Design LP A21070 Fwd Gain3.1
KF0AKHB Log PDA Sat A Ant "Eagle" Back Gain-0.8
KF0AKHB Log PDA Sat A Ant "Eagle" Fwd Gain-1.3
432 MHz CallDesignGain (dB)**
W0OZIDir SysDFSO ATV-2515.4
WA0CQGHB K1FO-style yagi15.3
KC0AKJ16el KLM12.5
WD9IVDHB 46 el 440 yagi11.8
WA0VPJPair Stacked 6 el Yagis9.0
KD9SG7 ele unk Mfr #B8.4
KD9SG7 ele unk Mfr #A8.3
KF8QLDL4KCL 4 el Yagi LPA8.0
K9KJDegen Design LP A21070 Fwd Gain7.8
KF0AKHB Log PDA Sat #2 Ant "Eagle"7.8
VE3BFMHB 5L/2 V Dipole7.8
KF0AKHB Log PDA Sat A Ant "Eagle"7.2
VE3BFM5 el LP 2m/432 RICO6.0
VE3BFM4 el V-LOG P Degen LPA210706.0
W1JRHB 3 el yagi5.6
K9JKDegen Design LP A21070 Back Gain4.8
WB9OGMcom'l Big Wheel #20.8
WA0NJFHB End feed Zepp (horiz)-14.2
436 MHz* CallDesignGain (dB)**
WA5VJBArrow Antenna w/8-32 nuts on elements~7.3
WA5VJBArrow Antenna w/plastic inserts on elements~7.3
WA5VJBArrow Antenna w/star washers on elements~7.1
WA5VJBArrow Antenna w/o Diplexer~7.0
WA5VJBArrow Antenna w/"torqued" elements~7.0
WA5VJBArrow Antenna w/Diplexer~4.6
439 MHz* CallDesignGain (dB)**
W0OZIDir Sys DSFO ATV-26~15.6
WD9IVDHB 46el 440 yagi~11.4
KD9SG7 ele unk Mfr #B~9.3
KD9SG7 ele unk Mfr #A~8.7
902 MHz CallDesignGain (dB)**
VE3ADQ18 el loop yagi16.4
VE3BFMHB V dipole7.8
N0LNOHB Double Diamond6.0
WA2VOITACAN ant @~20° off plane (vert)2.2
WA5VJBBig Wheel2.0
N0EVDHB 6 el back gain-13.8
N0EVDHB 6 el Fwd gain>-20
1296 MHz CallDesignGain (dB)**
VE3ADQHB 28 el Loop yagi20.7
W0OZI55 el Dir sys (1255)19.9
K0DASHB Coffee Can Horn10.0
N0LNOHB Double Diamond8.5
W1JRHB 3 el yagi8.1
WA2VOITACAN ant @~20° off plane (vert)4.3
VE3BFMHB V Dipole4.0
WR0I6.75 x 5 x 5.5"-6.2
2.3 GHz CallDesignGain (dB)**
K8EBHB 48" Dish w/Coffee Can feed (2304/3456)21.6
K3SIWHB 33" Dish w/Triband feed18.2
VE3ADQ 14.5
K0SHFHB 24" Dish14.0
WA8RJFHB 20" Dish w/Triband feed13.1
K8KXHB 25 el yagi on wood boom12.1
WB9OWNHB 12 x 12 x 10" Cu Horn on Plywood11.5
WA8RJF14 x 4.5 x 13" horn10.1
WA5VJBHB 11 el "Cheap Yagi"9.4
WR0I6.75 x 5 x 5.25"8.0
WA5VJBHB 11 el "Cheap Yagi"8.0
K0FQA6 el Slot6.5
KB0DBS4.5 x 3.74 x 3.5" Horn4.3
WB9OWNHB Coffee Can (1 lb) Horn3.2
K0DASHB Circular Horn2.6
3.4 GHz CallDesignGain (dB)**
K3SIW33" Dish w/Triband feed22.8
K8EB48" Dish w/Coffee Can feed (2304/3456)21.2
K1WHS112 el Loop yagi19.8
KA0KEIHB 112 el Loop yagi19.6
K0SHFHB 24"17.0
KF9QLHB 45 el Loop yagi16.1
WA8RJF20" Dia w/Triband feed15.8
K0SHFHB 24" Dish w/Triband feed13.6
WA8RJFHB 20" Dia w/Triband feed11.2
KB0DBSHB 4.5 x 3.74 x 3.5" horn8.6
WR0I6.75 x 5 x 5.25" Horn5.8
5.7 GHz CallDesignGain (dB)**
K8EBHB 34" Dish w/W5LUA Dual band feed30.0
WB0LJCPhillips 18" Dish27.0
K3SIWHB 33" Dish w/Triband feed26.7
W0AUSHB Sony 18" Dish offset feed24.7
W0ZQGrid Dish 12 x 16" Model HG5822G21.1
WB0DBSRibbed Horn 1.75 x 1.75 x ?" length9.5
10 GHz CallDesignGain (dB)**
KC0PHB Channel Master/Prime Star w/modified Chaparrel feed38.1
K8EPHB 34" Dish w/W5LUA Dual band feed36.3
K8EPHB 24" Offset Dish35.8
K3SIWHB 33" Dish with 3/4" pipe feed34.7
KF8QL24" Sheppard's Hook Feed33.2
WB0LJCHB Sony 18" Dish Dual band feed31.8
KA0KEI4.75 x 3.5 x 9.75" horn21.1
KF8QL4 x 3 x 4.5" Horn18.9
WB0LJCHB 3 x 3.75" Horn18.2
WA8RJF2.75 x 2 x 5" Horn17.6
VE3ADQFeed Horn 2.75 x 2 x 5"16.6
WB0DBS2.75 x 2 x 5" horn16.2
WB0DBS2.75 x 2 x 5" horn15.6
WA9HCZHB Modified DSS Horn13.2?
24 GHz CallDesignGain (dB)**
WB0DBS4 x 3.25 x 8.75" horn25.0
WB0DBS1 x 0.75 x 2" horn13.3
NE8I32 slot3.3

*Measurements at 436 & 439 MHz considered estimates due to lack of proper references
**Gain in dB based on difference from reference antennas

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