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RAC Ontario Sections Bulletin for July 25, 2020

RAC Ontario Sections Bulletin for July 25, 2020

This is V__3____, Official Bulletin Station for Radio Amateurs of Canada, with this week's bulletin


1.  More than 12,000 Register Early for QSO Today Virtual Ham Expo

More than 12,000 have registered to attend the first QSO Today Virtual Ham Expo, August 8 – 9,
QSO Today host Eric Guth, 4Z1UG, said this week.

The platform simulates a convention experience with an exhibit hall and booths staffed by live attendants,
a speaker auditorium, and even a lobby. Attendance just requires an internet connection and a computer,
tablet, or smartphone.

The Expo will offer four separate speaker tracks focusing on a range of topics. Speakers will also be able
to provide related material, such as slides and white papers, that attendees can download. Every session
will have a Q&A where attendees can submit questions in real time via chat.

More than 30 booths will be open for attendees to visit, and exhibitors will have different options to
engage with attendees. Exhibitor booths can provide downloadable content, such as videos, spec sheets,
and manuals, and attendees can save content in a virtual briefcase to read later. Visitors will also be able
to interact one-on-one with booth representatives, using a Skype-like system.

Access to all speaker presentations and exhibitor booth content will remain on the Expo site for 30 days
following the event.



2.  Hanover Ham Haul is a go Saturday, Aug 15th.

This will be the second annual Hanover Ham Haul, an outdoor Ham Radio Garage sale/Hamfest in the Hanover,
Grey and Bruce Counties area. Proceeds to local charities.

Location: Hanover Drive In Theatre
When    : Aug 15th, Vendors: 08:30 - Buyers/Public 10:00 until 13:00
Cost     : $5.00 per person and $5. per parking space. Children under 12 free.
Talk In : 146.52
Bring any or All of your surplus Ham Radio related items only.
Empty your basement, fill your car, then sell it all. 

The washrooms will be available and appropriately sanitized for your protection. Certain Covid-19 rules will
be in place and that includes but is not restricted to physical distancing, wearing masks, directional
movement through the vendor area, hand sanitizing stations and double spacing of vendor spots to protect all
persons both selling and buying at our flea market. The Health Department also requires us to limit the crowd
to 100 persons at any one time (vendors and staff excluded). Please help us keep you all safe so we can all
enjoy this year's Hanover Ham Haul.

The venue operator has permission under the Phase Three rules to operate the concession. This means the
concession will be open and serving refreshments, snacks and hotdogs during the hamfest. It is necessary to
keep in mind the rules for distancing and wearing of masks to comply with the Covid-19 rules.

-- Dave, VE3EBM


3. Comparison of Hardware HF Modems vs. Sounddard modes.

Hardware SCS modems running PACTOR 2,3 and 4 were evaluated as were sound card modes WINMOR, ARDOP and
VARA across a variety of channel models and across a range of HF signal to noise conditions. VARA
testing included a new VARA 500 500Hz mode. VARA FM and AX.25/FX.25 packet were simulated for a VHF channel.
The SCS modems did very well as you would expect. The much less expensive VARA HF did especially well
across the range of conditions tested. The SCS modems and VARA could run long test cases without losing
a connection while ARDOP and WINMOR were slow and less reliable for lower SNR cases.
VARA FM crushed AX.25/FX.25 VHF cases.

View the complete study

4.  A surprise visit from STEVE

Comet photographers in Canada were surprised this week when the night sky filled with purple ribbons of light.
It looked like auroras, but it was not.  Comet NEOWISE was photobombed by STEVE, a recently discovered glow
caused by hot ribbons of gas in Earth's magnetic field. This narrow, subauroral, visible structure, distinct
from the traditional auroral oval, was largely undocumented in the scientific literature and little was
known about its formation. Observations from the Swarm satellite as it crossed the arc have revealed an
unusual level of electron temperature enhancement and density depletion, along with a strong westward
ion flow, indicating that a pronounced subauroral ion drift (SAID) is associated with this structure.
These early results suggest the arc is an optical manifestation of SAID, presenting new opportunities for
investigation of the dynamic SAID signatures from the ground. On the basis of the measured ion properties
and original citizen science name, we propose to identify this arc as a
Strong Thermal Emission Velocity Enhancement (STEVE).

-- full story at

This concludes this week's bulletin. Does anyone require repeats or clarifications?
Hearing none, This is V__3____ returning the frequency to net control.

Bulletin sent from Official Bulletin Manager

Posted by: Paul Caccamo <va3pc @>

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