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QC Weather

Thunderstorm
Sunday 06/24/2018 80%
Thunderstorm
Scattered thunderstorms this morning, then mainly cloudy during the afternoon with thunderstorms likely. High 78F. Winds W at 10 to 15 mph. Chance of rain 80%.
Partly Cloudy
Monday 06/25/2018 20%
Partly Cloudy
Partly cloudy skies. High 77F. Winds NNW at 5 to 10 mph.
Partly Cloudy
Tuesday 06/26/2018 0%
Partly Cloudy
Partly cloudy skies. High 78F. Winds SE at 5 to 10 mph.
Quad-County Weather Page

Latest News

Summer Has Officially Arrived!

With the official arrival of Summer on June 20, I expect most of us feel that considering the high temperatures and severe weather we've experienced, it seems like Summer has been around for awhile already. A couple weather issues that we need to keep in mind are lightning and the effects ...

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On-line Radio Wave Propagation Course

An interesting and informative course is available from Comet/MetEd titled Radio Wave Propagation. The course web-site: https://www.meted.ucar.edu/training_module.php?id=1394#.Wylt6Rwnb4Y If you are relatively new to amateur radio do not be concerned with the technical aspect of understanding all of the details and terminology. You may be surprised that many of the graphics and ...

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Public Service Event: Baker Trail UltraChallenge 2018

Public Service Event: Baker Trail UltraChallenge 2018

he 2018 Baker Trail Ultra-marathon will be held starting at 6:30 AM Saturday August 25, 2018. This year will be on the "central section" of the trail (Summerville to Smicksburg).  Here is a link for information and to sign up:   https://www.rachelcarsontrails.org/events/ultrachallenge/uc18                  Scroll to the bottom of the page.   Map of ...

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Paul Silinsky K3PS - Silent Key

It is with deep sadness we report the passing of Paul Silinsky K3PS. Dr. Paul Stephen Silinsky K3PS of Ashland, Ohio, formerly of DuBois Pennsylvania, died following a brief illness on Saturday, May 5, 2018. He was Lecturer at The Ohio State University -- Agricultural Technical Institute in Wooster, Ohio, and ...

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Public Service Event 2018 Brookville YMCA Adventure Race June 2, 2018

Public Service Event 2018 Brookville YMCA Adventure Race June 2, 2018

he Brookville YMCA Adventure race is set for June 2, 2018. Chuck Shaffer, KC3EAJ has requested amateurs to provide public service communications for this race. His main focus is the orienteering course between Millcreek & Frozen Toe. The actual race covers eighty four miles and there are opportunities for as many ham operators to ...

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ICOM 706 MkII for sale

Selling my ICOM 706 MkII It comes with separation cable, face mounting bracket, and original mike. Everything works as supposed, very good radio, but, time for something new.... Comes from smoke free enviroment. I will not ship! Price $ 475.00   Email: kvantlars@gmail.com  

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Meteorological Spring Has Arrived

The National Weather Service, Spring Safety Campaign is in effect. There are many aspects of Spring weather that can ruin a good day and we have to be aware of such adverse weather. Being aware and recognizing is only part of the equation, we have to follow the advise to ...

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Another Recent NWS Addition

I briefly looked at this site before but today I decided to spend a little more time looking. It was worth the time! I found the GOES-East GEOColor screens, they are really interesting and the resolution is quite good. Be sure to click on the GeoColor Loop, located in the ...

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Expanded National Weather Service Information Web-Page

Expanded National Weather Service Information Web-Page

  The National weather Service has expanded some experimental winter weather informational pages. I believe that you will find these pages interesting and informative. They may assist you in planning for upcoming winter weather events in you locale. Be sure to scroll down the page and also check out the four ...

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NOTA Special Event

Here is another On The Air Special Event that you can get your HF as well as 2 meter and 70 cm rigs warmed up for. The National Aeronautics and Space Administration (NASA) is beginning their year long NASA On The Air Special Event beginning December 11, 2017 and will ...

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SKYWARN RECOGNITION DAY OPERATING EVENT

SKYWARN RECOGNITION DAY OPERATING EVENT

This year the official date for the SkyWarn™ Recognition Day event is December 2. The event will be in operation from 0000 UTC – 2400 UTC, December 2, 2017. This is a rather simple event, the purpose is to contact as many National Weather Service stations as possible on 80 ...

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2018 Dues Are Due!

2018 Dues Are Due!

The 2018 membership dues for the Quad County Amateur Radio Club are due. Please note the updated dues structure.   A  .pdf can be downloaded using the following link: 2018 QCARC Membership Application Please make checks payable to: Quad County Amateur Radio Club. You can print the completed application, mail it to Quad County ...

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National Weather Service Hazard Simplification Initiative

The National Weather Service is simplifying their hazardous weather products list. Please click on the below link for what they are doing for winter effective October 1, 2017. Looks like they are narrowing down to three categories. http://www.weather.gov/media/iln/HazSimp.pdf

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Autumn SkyWarn Newsletter Available

Autumn SkyWarn Newsletter Available

The 2017 Autumn SkyWarn newsletter is available on-line at: https://www.weather.gov/media/ctp/Spotter%20Newsletters/Autumn2017.pdf    

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Amateur Radio License Exam Session

Amateur Radio License Exam Session

EXAM SESSION 09/29/2017 ALL CLASSES OF LICENSE EXAMS WILL BE OFFERED. Sponsor: Quad County ARC Date: Sep 29 2017 Time: 6:00 PM (Walk-ins allowed) Contact: Joe Shupienis (814) 371-3235 Email: w3bc@arrl.net VEC: ARRL/VEC Location: Penn State Dubois Smeal Building Du Bois, PA  15801

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QCARC Events

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What About Inversions

Lately many of us have heard stations from rather distant areas on the 147.315 repeater. It is interesting to hear those stations that we normally do not hear but often it is just due to a weather phenomenon called and inversion. I expect that some amateurs sit back and wonder just what is this inversion thing that some offer as an explanation for the unusually distant stations heard and some stations that we can even carry on a QSO with. Sometimes the stations seem as though they are just audible for enough time to hear a call sign but other times long enough for a typical QSO. Then there are times that you may not even be able to hear or access your local repeater and again you will hear folks offer the explanation as an inversion as well.

Consider the simplified diagram of an inversion below. Note that typically as you increase elevation the temperature lowers but with an inversion the opposite happens! You can see the yellow area depicting the inversion, which actually ends up acting as a boundary layer that can either attenuate the signal to and from the repeater or at times signal attenuation can occur to the extent of both blocking the repeater from hearing your transmitted signal and from you hearing the repeater’s transmitted signals. This occurrence can lead one to believe the repeater is off the air. I recall years ago there were trips made to the repeater site when we could not use the repeater, only to find the repeater operating. All due to an inversion. Sometimes the inversion layer is well above what the diagram depicts too, leading to other stations that you will be able to talk with that you would not ordinarily be able. There is another term used for this phenomenon which is called ducting that enables more distant than typical communications to occur, especially on VHF as well as UHF.

Inversions, ducting, tropo and what ever other titles the phenomenon of having radio signals reflected and refracted is an interesting and vast topic of which you can read up on. Look for propagation of radio signals either on the Internet or the ARRL Handbook for Radio Communications, what was previously called the Radio Amateur’s Handbook.

Inversion

       

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