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Ham College episode 7 is now available for download and viewing.
Ham College, the new show for those new to the hobby and those wishing to get into Amateur Radio.
In episode 7 we talk discuss and demonstrate Radio Waves. More questions and answers from the US Technical class question pool.
How good is FT-817's MH-31 standard microphone?
In this video Peter Parker VK3YE tries the electret insert microphone modification for his Yaesu FT-817
The YouTube description reads:
I've had many good reports from the MH-31 which came with my Yaesu FT-817. But we know that punchy transmit audio is critical for successful QRP DX and attention to this is one of the most cost-effective things you can do to improve performance. Is the standard MH-31 the best there is, or are easy improvements possible?
Others reported improved results by substituting an electret insert. It seemed too simple not to try. With two MH-31s available I could modify one and do quick comparisons with the stock standard.
Was the mod worth it? Watch the video and find out: https://youtu.be/3wblI9jLVng
George Smart M1GEO Yaesu MH-31 Electret Condenser Mic Mod:
The HARAOA team is live on the air on South Solitary Island OC-194 as of 08:00 UTC on Sunday 26th July 2015.
A Bell 212 Twin Huey helicopter made four trips with all the team members and equipment.
All four stations, antennas are up and running.
Photos from the operation on South Solitary Island as of 26th July 2015 at: http://vk2ssi.com/2015/06/17/south-solitary-island-oc-194/
27 July, 2015
1375 First roller skating rink opens (London)
1793 Metre defined as 1/10 millionth of North Paris half meridian.
1809 First practical US railroad track (wooden, for horse-drawn cars), Phila
1866 Metric system becomes a legal measurement system in US
1866 Atlantic telegraph cable successfully laid (1,686 miles long)
1872 Mahlon Loomis patents wireless telegraphy
1899 First motorcycle race, Manhattan Beach, NY
1909 Orville Wright tests first US Army airplane, flying 1h12m
1914 Assassination of Austrian Archduke Franz Ferdinand and his wife. Precipitates WW I
1919 Treaty of Versailles ending WW I signed.
1944 First British jet fighter used in combat (Gloster Meteor)
1983 Official speed record for a piston-driven aircraft, 832 kph, Calif
Our thanks to John Alcorn, VK2JWA of the Summerland Amateur Radio Club for this weekly feature.