OCARC

The Orchard City Amateur Radio Club is incorporated under the Societies Act of British Columbia in 1971.

OCARC is centered in the city of Kelowna in the Okanagan Valley of British Columbia. With over 65 members, our amateur radio club provides volunteer communications for events throughout the region. Club members are active in every facet of the hobby and they maintain several analog, digital, VHF & UHF mountain top repeaters.

We are Amateur Radio (Ham Radio) Operators licensed by Innovation, Science and Economic Development Canada (formerly Industry Canada).

OCARC Field Day 2024 - June 22 & 23

Posted on: Tue, 06/18/2024 - 15:04 By: VE7JXC

OCARC Field Day 2024

The Orchard City Amateur Club is hosting Field day this year. All Amateurs, friends and family are welcome to participate.

It will be held at 3145 Gulley Road in Kelowna. Brian Porter is good enough to let us set up in his orchard property.

Field day officially starts at 11:00am Saturday the 22nd and ending on Sunday the 23rd 11:00am. Help will be needed for setup Friday morning the 21st and tear down on Sunday.

Operators will of course be needed during the 24 hour event. No experience necessary! If you have a particular time slot that suit you, let me know. You can connect your own equipment if you prefer.

Camping space is available for trailers and tenting if you wish to stay overnight. Coffee and donuts are on site, as well as a free BBQ featuring hamburgers and hotdogs.

A swap shop table will be made available for those who have any equipment to sell, trade or give away.

Hope to see you there!

For further information drop me a line at ve7mvf@yahoo.ca

73 de Mike (ve7fi)

 

Equipment from Guys Estate

Posted on: Thu, 04/18/2024 - 14:28 By: VE7JXC

Items Of The Estate of Guy Venne VA7GV

Internet Prices

ICOM IC-2100H Transceiver

$150 to $250

ICOM IC 706MK2G

$650.00

ICOM IC-7100, HF, VHF, UHF, All Mode (Incl. D-Star)

$1100 - $1300

AZDEN PCS -6000H Transceiver

$85.00

Misc. Handhelds Old outdated maybe Scrap

?

American Electronics Model 95-129

$20.00

ICOM IC-720A All Band Transceiver

$180.00

Yaesu System 600 HF Transceiver

$400.00

BC895XLT Uniden Scanner

$83.00

DX394 Radio Shack Scanner

$50.00

PRO-2026 Radio Shack Scanner

$62.00

Uniden BCTB Scanner

$60.00

LDG IT-100 (HF-6m) Auto Antenna Tuner

$60.00

Z 100 Auto Tuner

$100.00

LDG IT-100 (HF-6m) Auto Antenna Tuner

?

AT-180 (HF-6m) Auto Antenna Tuner

?

IS-1225 Antenna Tuner

??? Home Brew?

ICOM IC -2800H Dual Band 2M/ 70CM

$276.00

MFJ-259 Antenna Analyser

$150.00

CN460M Daiwa (140-450 MHz)t cross-needle SWR meter

?

Archer CB Wattmeter

?

ASTRON RS -20A Power Supply  ( wont do 11A)

?

SA-5010 Auto Keyer

?

Battery Tester

?

Dash Cameras/Home Surveillance Camera

?

ASTRON RS-35M Power Supply (35/25 Amp, 13.8 VDC)

$150.00

Misc. Power Supplies

????

Battery Tester

?

SR-100 SunRay Solar Inverter.

????

????

Misc. Mics

????

Misc. Connectors

????

Miscellaneous Speakers

????

Misc. Cords

????

RCA STB7766G1 Analogue Pass through TV converter

????

Model 433

?????

Regards

VA7RRD Bob

Simple 10M Magnetic Loop Antenna

Posted on: Sun, 02/25/2024 - 21:26 By: VE7JXC

Simple 10M Magnetic Loop Antenna by Ron Brillinger VE7RFB

Now that cycle 25 is on the upswing we can look forward to increasing amateur radio activity on 10 meters, and once again contacts with stations in far away places, even if we are limited in transmitter power output, or are unable to erect a full size and perhaps highly visible outdoor antenna. The challenge is really that of reception of the signals from those far away places rather than getting a transmitted signal to that DX station. Given that few of us can erect multi element yagi antennas, (or any other highly visible antenna for that matter), the magnetic loop antenna appears to be a prime candidate for an acceptable solution to the problem of participating in amateur radio activity, while living in a less than ideal location. This is particularly true if the design and construction of the loop antenna is optimized for one particular band like 10 meters for example.

image1

I live in an apartment building, and as such I must contend with high levels of QRN from neighbouring fluorescent lamps, TV sets, mix-masters, computers, (and the list goes on). The Magnetic loop antenna could give you a real advantage for reception in such an environment, and at the higher frequencies, like 10 meters, the transmit efficiency of a small loop can be almost up to par with a full size dipole. Something approaching 90% (-0.5 dB below 100%).

image2

 

 

My latest small transmitting loop antenna project is simple because it is designed for one band. It is inexpensive to build, and actually out performs the multi band ATU loop you can see in the background of the above photograph.

 

What do you need to build it ? Well the essential ingredient is a ten foot length of 1/2” copper tubing. It is actually 5/8” O.D. and is relatively easy to form into a loop of about 31” in diameter. I used an electrical conduit type “C” access fitting to bring together the copper loop, gamma matching network and SO239 for a 52 ohm RG8 coax connection to my radio. This fixture, can be supplied made of either cast aluminum or PVC. It will need some holes drilled to accommodate other bits and pieces, and perhaps a bit of filing to ease the copper tubing through the assembly; but more about that later.

image3

 

You will notice that the ends of the copper tubing overlap by about 22” at the top of the loop. They overlap but don’t touch because they are held apart at a constant distance by 3 clips. I used plastic “chair ganging” clips. They snap on to the copper tubing and hold firmly but still allow adjusting the overlap by push and pull for tuning. And yes you are right, what we have constructed is a variable capacitor of about 20pf at the top PIX 3 “high voltage” end of the loop. The clear plastic end caps you see on the copper pipe were found on the SO239 fittings I purchase for my loop projects. They fit the tubing perfectly and help to rain proof the assembly.

 

The bottom of the loop, (the high current point), passes through the conduit fixture and it is there that we connect the coax from my transceiver with the “gamma” matching section that feeds the loop. You can see this completed assembly in the following photograph.

image4

And below is a drawing showing the location of holes to be drilled in a type C conduit fitting to accommodate the SO239 and feed-through connector to the “gamma” match. If you are going oto mount this fixture to a tripod or something similar you should install the mounting nutoand bolt at the bottom before passing the copper tubing through.

image5

image

When assembled you will probably want to weather proof the copper tubing entry points, as I did, with silicon seal.

Now lets have a look at the matching network.

image7

I chose a 13” length of copper “pipe hanging” strap to form the gamma matching section. A two inch brass bolt temporarily placed through various holes in the copper stripping and contacting the loop’s surface allowed me to locate the best match. Finally I fastened this bolt to the copper strap with a brass nut, and soldered the bottom end to the copper loop antenna. This took a fair amount of heat, and my 350 watt soldering gun was just up to the task.

image8

The result I obtained on my antenna analyzer at this point are shown below. At 28,280 kHz the measured SWR was 1.2:1 The antenna does have a high Quality (Q) factor and that contributes to its efficiency; but still, it does exhibit a reasonable bandwidth. Something approaching 250 kHz. You can push or pull the overlapping sections of tubing to get the centre frequency you desire for operation in the 10 meter band.

And yes, the magnetic loop antenna does exhibit a measurable advantage when employed in a location exhibiting considerable QRN.

The observed difference between this antenna and thers antennas is a 1 to 2dB decrease in noise sensitivity. But as they say in the advertisements, your results may vary.

image9

Over all, this seemed to be a good point to pause my project. VE7RFB Ron

 

Winter 2024 Course Accepting Registration

Posted on: Wed, 01/10/2024 - 23:13 By: VE7JXC

NORAC is pleased to offer the Basic Qualification course in-person at the People Place in Vernon running Tuesday and Sunday nights from 6pm - 9:15pm starting on February 13th ending with the exam on March 26th.  Please note that there will be no class on February 18th for Family Day weekend. More information.

Ham Equipment Sale

Posted on: Wed, 12/13/2023 - 18:20 By: VE7JXC

Date: Sunday March 17 2024

Location: Pace E Waste 105 Martin Street Penticton

Time: 10 AM - 1 PM

Tables: 12 to 15 tables

Testing Station: with power supplies, antennas, dummy loads, etc.

Contact: Scott ve7 jke at gmail.com 

OCARC Hamwan Highspeed Backbone

Posted on: Sat, 11/25/2023 - 16:44 By: VE7JXC

The Okanagan Hamwan Highspeed Backbone has been expanding. This last year (2023), the Okanagan to Campbell link was upgraded to being an backbone connection.

Also in 2023 the equipment for the Landmark to Westbank backbone was aquired, this will be installed as soon as the new tower is installed in West Kelowna.

The next phase will be the Campbell to Peachland to Kuipers with a another phase of Blacknight to Silverstar to Turtle. The added phases will add redundancy to the network.

 

Hamwan Backbone

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