Locked Re: School me please

Phernell Walker <phernell@...>

Hi Bob,

You are 100% correct in everything.

Also, you explained the question and assumptions in basic terms, which I love.

Another factor we must consider it the clock difference DT (difference in time). This setting is critical because the other station may not hear you or vice Serra if the DT if too great. You could be transmitting and receiving during the same time interval due to the difference between their clock and yours. I use a Mac and use the internet to keep the exact universal time.

PS: I am an FT8 and FT4 addicted only HF!!!
With a Magnetic Loop I’ve logged 70 countries. Love it!!!

Hope this helps,
Phernell Walker (KC5MPS)
Portland, Oregon

Sent from the Future using
my iPhone

On Jul 13, 2020, at 8:37 PM, Bob <k4cy@...> wrote:

Naïve as I am, but when operating in the HF bands there are two notable differences between FT4 and FT8. 1) FT8 has a handful of dB theoretical lower noise floor advantage over FT4, and 2) FT4 has an order of magnitude time advantage in being able to complete a 'QSO' in a fraction of the FT8 QSO time (I'm a 'Wham, bam, thank you Ma'am, kinda guy).

Here I am on 20M tonight, short skip is in. No thunderstorms for 800 miles. No neighbors using their 20 year old LCD TVs. No QRN. I have a dipole slung between lawn chairs. On FT8 I can decode as many as 40 stations (most disgustingly loud). On FT4, maybe 2 and occasionally three.

How/where does the 'herding instinct' factor into the preference for FT8 over FT8? There's some basic technical/philosophical/social concept that totally escapes me. I'm a virgin. School me please. Thanks, Bob.

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