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Total: 7 of 7
Date: September 18, 2021
Author: Ed March, WB9RAA
Prescott Valley, AZ
Project: WB9RAA QRK What is the intelligibility of my signal?
Last Updated: Sept. 26, 2021
The QRK Beacon
Since Mid-September I have been transmissting a CW beacon at 20-25 WPM on 40 30 20 and 17 meters.
I am Transmitting on 7.047.47 and/or 10.147.47 and/or 14.047.47 and/or 21.047.47 with 50 watts in to a Dipole or Vertical
antenna, six times an hour. At these times
where HH is from 5am thru 8pm Arizon time or
UTC-7 HH is noon 12:01:00 thru 03:43:00 UTC
9-20-2021 heard in Dallas, TX, Glenview, Wood Dale and Rockford Illinois
Did you ever wonder how far your Ham Radio signal gets and where it can be received?
Well I have, and I have a proposal that needs a few volunteers and some donations.
I received my first several donations 2021-09-18 !
There are many SDR's on the web
that can be operated openly and freely.
I have used these to see if my test signal can be heard.
I propose an automated receive system, that would listen on preset frequencies
and log the stations and signals to a website. Each receiver (probably a SDR radio)
would listen one of the proposed frequencies, initially only during certain hours.
These are the
[+] Proposed Frequencies
The Transmitting ham would send a CW signal as
When the listening station hears the initial preamble QRK?QRV/QRK?.
and the callsign received twice it can then log the Station heard
time of day and signal report and some details on receiving equipment.
I am maintaining a WEB MySQL database and grant KEYS
to trusted receivers with fixed IP's to log their entries into the database.
The database would keep records for 6 months to a year days perhaps longer depending on activity
and record sizes. The RX stations would have some location such as Longitude/Latitude
or Grid numbers.
If the RX has multiple receive copies they should use the strongest signal.
If I could convince W1AW to send the QRK?QRV/QRK?.DE.W1AW.W1AW.QRT
Pattern once a day this then they too could be plotted on a world wide map!
To get started We need 5 receiving stations on a common frequency. Would be nice to have
an (1) Easter (2) Western (3) Northern (4) Southern and (5) Central stations who could
receive decode and Post their data to my website.
I am working on Open Source ESP32 Code to control two radios with 4N35 opto isolators. Configureable with Serial port and Webpage.
Next steps are a WEB API for php and MySQL, so other SDR can post their hearings.
Please consider a One time $5 donation
Thanks to Miguel in Spain and Carl and Kellyann in the US for being the first several donors.
I am a retired Software engineer with web database and embedded skills to make this happen. Each station could use an
inexpensive Raspberry Pi and decode RTTY,PSK31, CW for starters. Initially I'd like to use the easiest modes to
get the system in use.
Email me wb9raa
(at) gmx (dot) com
73, Ed March from Prescott Valley, AZ