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KM2KM USA flag USA

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Ham Member Lookups: 3653

 

Forget the Iso-Tron, Moxon, Alu-Boron, sidestepper, log periodic-bazooka-bubble.  The way to go is the 165 element, "Natural Frequency" dome.  Known to focus and capture the Sun and other celestrial energy! 

 

 

K1OF/QRP Kite supported 1/2 wave wire at Field Day Site Norwalk, CT 2017 

Wire reel and kite line

K1OK with kite - GNARC Field Day in Background

KIte in the Air

Matching Network

K1OF  QRP Rig, computer battery pack.

 

Home Brew 4 Element Quagi for 6 Meters

Built from an Italian Design (IV3GKE - Roberto Turcos).  The spider and struts came from a used Gem Quad.  The struts were cut down and the boom and directors were from misc aluminum.  The Quagi design leads to a 50 ohm impedence.  It also provides the typical 2 DB gain over a Yagi with the same number of elements (interestingly after the Quad reflector/Driven combination additional quad directors do not improve gain over yagi elements.)   Quieter than a Yagi?  Perhaps, but I have yet to compare my 4 element Yagi with the Quagi.  

Specs at : http://www.iw5edi.com/ham-radio/8/4-elements-quagi-antenna-for-50-mhz 

Quagi Assembled on the Ground

Quagi on Tower above  Two 2-Meter Yagis

 

Quagi is pointed downward; it is mounted above the 5 Elm 10 Meter Yagi on 24 foot boom

MOUSE SUPER KEYER

In the 1980s a mouse died in the office - I inserted an Idiom Press Super Keyer inside using the paddles for keying and adding four micro switches to the sides for 4 memories, a pot to the front for keying speed, and a jack for an earphone.  

 

 

40/60 Meter Dipoles

The 40 and 60 meter bands are favorites.  I also like resonant antennas so it made sense to use the Unadilla 40 KW trap.

The first of three dipoles is based on a pair of Unadilla 40 KW traps  from about 1984  (32 years old!); set up in CT.  In 2016 I bought two more sets for dipoles in Ithaca, NY.  The 2016 traps used in Ithaca do not have the adjusting strap.  

Overall Length 5.25”

              Larger diameter tube is 7/8” inside

              Smaller Diameter tube is ¾” outside  (1/16th )

Coil

              2.5”long

              1.75”diameter

              25 turns (but tuning strap covers three turns)

Yes, coil form is split and not cut in a straight line.  I am not sure when this cracked.

Close Up of crack

Close up of tuning strap

 

Banana Bush - 16 March 2017

In 2015 we visited ham friends in VA and NC.  One of the hams was Gary (Banana Gary) K4AVC (SK).  Jim (W8AC) gave him that nick name to distinguish from another great Gary (also SK).  Below is Gary with my XYL Stella (KA2OXG) in Gary's Garden/Antenna farm.

Gary gave us a small Banana plant - about 18" tall. In the Summer it goes outside on the deck, and in the Winter it comes inside under the dome.  At the end of the Summer of 2016 it had five leaves, during the winter two leaves dried up, and now (March 2017) it sprouted a new leave - the pointed vertical stem.  (Opps, need to rotate that photo!)

Gary was a great friend to many of us, and the Banana Bush reminds me of him daily.

 

DXing -- Contacting CY9C - St. Paul Island 2016

This expedition really excited me.  It just had an appeal.  So I set out to contact them on

11 bands 6 to 160 meters. I hung dipoles aimed their way, I even assembled the driven

elements from a Mosley TA-53M on a pole 12 feet high, and went to it.

 

Thank you CY9C team for a great time.

DX in Flores, Guatemala

Since 1998 my work has been short term consulting evaluating development projects overseas; i.e., answering the questions: "Was there an impact?" "Why?"  "Why not?"  "How could it be improved?; "Was the theory of change relevant?" At any rate, the travels all over the world have contributed to the DX operations.  In 2007 the chore was to work with a team to evaluate the 10 year program of support for the Mayan Biosphere Reserve ion norther Guatemala.  Flores is the main municipality and located on an island in Lake Flores Itza.  With an Oak Hills Research Explorer II (4 Watts CW) and a sloping dipole from the roof of the hotel out to a snag in the lake I was able to work Japan in the early morning and Europe in the evenings.

Flores - Hotel Casa Azul is on the North side of the Island

 

Dipole Feed on Balcony

Minimalist Station - Mouse with Idiom Press keyer inside; old 12V computer pwr sply

 

Early Morning Operation - No AC, but a breeze

 

 

SUMMER ON THE ANT FARM  - 2016

The winch project to the 40' tower was a great addition.  Locally fabricated - my design, copied from photos of similar commercial winches.  Is taken off the base when work is done.

This year a new rotor was added - After all of these years the 1979 Ham IV gave up the ghost.  Calulations showed that all I needed was a Yaesu G 450A for the 5 element 10 meter HiGain, and the HB 4 element 6 meter Quagi.  So, for the cost of a rebuild, I had faster rotating, new rotor and controller.  I like the 450 degree coverage.

QUAD VS DIPOLE - SEE MY JUNE 2016 QST ARTICLE.

The June article was an antenna modeling exercise using EZNEC 6+.  The conclusion was that  dipole offers more gain and a lower angle of take off than a vertically hung quad with the top wire at the same height as the dipole.  In June I hung a dipole to accompany the Quad.  The A/B tests with over 120 contacts confirmed the EZNEC conclusion.  

PATIENCE PLEASE

I am now proweling the 40 meter band doing "A-B" tests comparing the quad at 60 feet with a dipole at the same height.  They face N-S. Please have patience with me and help produce a hundred or more tests for data analysis.  I am trying to put my ears and mouth where my modeling was! :>)

73,

Kris

KM2KM has been in effect since 12 May 2010.

KA2OIG was my original call sign in 1982. In 2010 I upgraded to Extra and became KM2KM.

Overseas my call signs have been: /TG (Lake Flores and also Guatemala City); /HR8 (Morgan’s Cay, Bay Islands); /HK2 (Bogotá); HR3SJO (Scout Jamboree Olancho); TI2QRP (I was really into QRP then); OA4DBO (Lima); HC1CK (Quito, Guayaquil) and /WP4 (Arecibo Observatory). I have also operated from Newfoundland; Sri Lanka; Kosovo; and France.

Antenna farming has always been one of my favorite pass-times. A few articles have been published by the ARRL including one on changing zoning regulations. The Antenna Farm is at www.merschrod.net/ANTFARM.htm

Overseas work is in the field of Rural Development - the practice of Development Sociology and Economics. After managing development projects overseas through 1998, we decided to take a vow of poverty and do short term consulting. The vow has been more or less successful!

The station consists of a Ten-Tec Delta II, an Argonaut V, an FT-857-D. Vintage Equipment consists of a Drake TR4-CWx/RIT that I have had since the early 1980s and a couple of sets of Drake Twins - one of the earliest "reciter" models and one of the latest, "C-Line" models. I use them on AM and also SSB and CW. There is nothing like the glow of "hollow state."

QRP I can't remember when the QRP bug bit, but it started with just turning down the gain on the TR-4CWx. HB rigs were next, then kits. the latest QRP rig is the Argonaut V - a real gem. The 1990s or so Oak Hills Explorer II for 30 meters is one of my favorites. ARCI Nr = 7272; MI-QRP =537; NW-QRP =212; and G-QRP = 5951.

Field Ops An annual event with my grandson has been a 6-meter sprint from Hogback Mountain in VT.

Moon rise over the operating position Looking South toward MA from southern VT

Some Years it is Warm

 

 

Portable Six Meter set up  The hinged base is held under the rear wheel, the yagii has 4 elements, the 18 foot pole has guy ropes, "armstrong" rotation, all folds down into 6 foot lengths. 


Keyers 20+ years ago a mouse was going to be tossed out at the office - After gutting it I installed a CMOS II; it is still clicking along. Presently the project is a CMOS III into a trackball-type mouse. The sensitive micro switches in those "mice" are durable. They are light and easy to get the hang of.


Morgan's Cay 1997 & 1998  One of the Honduran Bay Islands - Solar panels into truck batteries, part of the reefs off the Norrth Coast, great diving, The follow photo shows the OP, an Oak Hills Research Explorer II made for 30 meters, and the mouse keyer mentioned above.


QSL CARD from 1998  KA2OIG OP'd 30 meters; W0  (Daughter in law) Op'd 10 meters


60-Meters is one of my favorite bands, and, IMHO, was one of the more innovative changes in Ham Radio in a long time.

 

cu agn es 72

Kris

 

 

 

8337149 Last modified: 2017-09-18 11:22:32, 17219 bytes

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QRZ Logbook Summary for - KM2KM
Latest Contacts for KM2KM at QRZ.com
dedateband mode grid Country op
KY4CL 2017-10-20 40m SSB EM77ut United States CLIFFORD C LEDINGTON
KC3FHM 2017-10-18 160m SSB FN21ff United States Kevin F Koskovich
K8JD 2017-10-06 60m SSB EN82GO31 United States JOHN W DAVIDSON
K1TSW 2017-10-06 60m SSB FM29mv United States THOMAS S WRIGHT
N9VX 2017-09-28 60m SSB EM79kp United States Joe M Word
F6GPT 2017-09-28 40m SSB IN94sw France Jean-Marc John MARROC
YT5X 2017-09-28 40m SSB JN95ve Serbia Zeljko Stojanovic - Zex
WC4Z 2017-09-21 60m SSB EM85UV83 United States EDWARD A SPARKS
YU1XA 2017-09-19 40m SSB JN93wu Serbia Blagomir Mitrasinovic
FP/M0ZXA 2017-09-19 40m SSB St Pierre & Miquelon
N3IBX 2017-09-10 60m SSB FN20nh United States JOSEPH M CRO
W8YXT 2017-08-09 60m SSB EN71nu United States SAMUEL D SOUTHWORTH
AC8GD 2017-08-09 60m SSB EN71ow United States Larry D Ware
KM4QPR 2017-08-09 40m SSB EM96TA46 United States JAMES D COLE
WY7HR 2017-08-01 40m SSB DN71od United States ROBERT H RAY

Book Totals: 1017 qso's   176 confirmed Get a free logbook at QRZ.COM


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