Recapping 2017 CQWW Phone

Written by admin On October - 31 - 2017 Comments Off on Recapping 2017 CQWW Phone

The world came out to play in the 2017 CQWW Phone contest, October 28-29. See a brief analysis of running domestic stations vs. chasing DX in one of the biggest worldwide contests of the year.

Adding the Ameritron AL-80B to the shack

Written by admin On June - 12 - 2017 Comments Off on Adding the Ameritron AL-80B to the shack

The VA7ST station has a new contesting amplifier — the Ameritron AL-80BX joins a pair of SB-221 amplifiers for high-power operation.

Introducing the Zone Zero podcast

Written by admin On April - 21 - 2017 Comments Off on Introducing the Zone Zero podcast

It’s time for a podcast devoted to amateur radio contests. Now we have one. Welcome to Zone Zero.

New radio room is on the air

Written by admin On August - 24 - 2016 Comments Off on New radio room is on the air

After two years of “all talk, no action,” the radio room has been rebuilt.

Heathkit SB-221 brought back to life

Written by admin On May - 9 - 2016 Comments Off on Heathkit SB-221 brought back to life

An overview of my SB-221 amplifier repair project — a notebook about what it needed and what I did.

The Large and Powerful Spider Beam

Written by admin On January - 23 - 2016 Comments Off on The Large and Powerful Spider Beam

Here’s a homemade, lightweight but full-size triband yagi (with directors and reflectors in V configuration) interlaced on a 32-foot boom. And it works like a dream.

Hybrid wire element SteppIR 40M yagi

Written by admin On January - 23 - 2016 Comments Off on Hybrid wire element SteppIR 40M yagi

Expand a 40M rotatable dipole into a 2-element yagi with a fixed wire element. Add a relay to the wire and get instant 180-degree rotation, too.

LED lighting for CDE/Hygain rotator meter

Written by admin On September - 7 - 2015 Comments Off on LED lighting for CDE/Hygain rotator meter

Tired of burned-out bulbs in your CDE rotator meter? Replace the bulb with an LED strip — it’s inexpensive and LEDs will last a very long time.

Rebuilding the radio room

Written by admin On August - 15 - 2015 Comments Off on Rebuilding the radio room

Big plans for the radio “shack” at VA7ST… will it ever be built?

Astron power supply digital meter (volts/amps)

Written by admin On July - 10 - 2015 Comments Off on Astron power supply digital meter (volts/amps)

Want to know what that “blind” power supply is putting out? Add a digital volt/ammeter to your meterless Astron power supply

Propagation Now

Time of latest WWV report Solar flux index -- from SWPC WWV.txt Day's sunspot count -- from SWPC dayind.txt Current A-index -- from SWPC curind.txt Curren K-index -- from SWPC curind.txt Geomagnetic condition based on current A-index and K-index levels GOES 14 Solar X-ray flux -- A or B is good, C M or X is not good Calculated band conditions based on +/- points awarded for latest: A-index, Aurora level, X-ray flux, Solar Flux Index, and typical utility of each band group during hours of daylight or darkness Latest OVATION-prime aurora forecast images K-index (3-hour readings from Boulder, CO) for the past 24 hours Solar Flux and Sunspots for the past 14 days Developed for the Orca DX and Contest Club by VA7ST
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