Using currently available observational data, predictions and prediction uncertainties have been calculated for Solar Cycle 25. The results, based on both the sunspot number series and observed magne
Hi Kirk, The term I use is "flooding" not swamping. Most commonly the culprit is an unprotected solid state device connected to an AC power wiring within about 5-10 wavelengths of an intense RF sourc
In any contest, "activity is good." Actually, its essential. Allowing credit for CW, SSB and digital QSOs with the same station would significantly increase the number of available QSOs. I don't see
I fully support K9YC's recommendation that ARRL members contact their directors so that they become aware of the need to quickly act force a change in the unfortunate choice of 7047.5 kHz for routine
Hello Ria, Lets hope that the band planning committee comes up with some good ideas. We're just experiencing the leading edge of the growth of digital communications on our ham bands and its importan
Oliver, There are many, many things that were thought to kill ham radio, or your favorite ham radio niche. In no particular order and far from complete: Spark CW QRQ QSK AM Heising Modulation Control
<blockquote> www.dodmars.org/home/wwv-surve y </blockquote> <blockquote> The results of this survey are shared with WWV/H personnel to show their NIST chain of command how often their stations are mo
Hi Dave. An extra space got injected into the URL This works: www.dodmars.org/home/wwv-survey 73 Frank W3LPL -- Original Message -- From: "Dave Zeph" <w9pa@w9pa.net> To: donovanf@starpower.net Sent:
These recordings are an impressive demonstration of the benefit of one dB of signal strength improvement in a weak signal situation. Click on the links on this website: www.ab7e.com/weak_signal/mdd.h
Hurry, get your's before for the next contest! Only $19.99 www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=ft8+robot&_sacat=0 73 Frank W3LPL __,_._,___ _____________________________________
The Carrington Event was the strongest geomagnetic storm known to have hit the Earth since at least the 14th century. Based on examinations of ice samples, scientists believe that geomagnetic storms
The DX Contest results article in September QST (now available via the ARRL homepage) is just as awful. 73 Frank W3LPL -- Original Message -- I received my August QST the other day, as the original o
Sorry, I meant to refer to the just-published ARRL Phone DX Contest results in October QST, now available via the ARRL homepage. The page count doesn't concern me, but the content just doesn't make a
The 2019 ARRL CW DX Contest Full Results article is here: https://contests.arrl.org/ContestResults/2019/DX-CW-2019-FinalFullResults.pdf -- Original Message -- However I know there used to be expanded
The forecast consensus: Cycle 25 will peak in July 2025 (+/- 8 months), with a smoothed sunspot number of 115. Cycle 25 is forecast to be average in intensity and similar to Cycle 24. The panel concu
Hi Bob, I haven't seen anything other than what I posted 73 Frank W3LPL -- Original Message -- Hi Frank, Thank you for posting that. If I recall correctly, this is a DRAMATIC revision in forecast com
I gave a presentation on the history of transoceanic radio communications to the Frankford Radio Club a few days ago. www.youtube.com/watch?v=pLN0MMxCvlc My presentation covers radio technology devel
Hi George, There are numerous excellent books already, just Google: History of Wireless 73 Frank W3LPL -- Original Message -- Hi Frank, Im anxious to check out your presentation. How about adding eve
Hi Jim, DeSoto's 1941 book "Calling CQ Adventures of Short-Wave Radio Operators" is available as a pdf here: http://ia311036.us.archive.org/2/items/CallingCq-AdventureOfShort-waveRadioOperators/Calli
I forgot to mention that "Calling CQ Adventures of Short-Wave Radio Operators" is a very readable collection of true short stories about the adventures of ham radio operators. https://www.google.com/