Logging With N3FJP OHQP Software

N3FJP has created a wonderful suite of software that covers most if not all Amateur Radio Contests. With a minor tweak, you can also use it for OSPOTA. It requires only 2 things:

  1. The instructions, which you can find at  https://ospota.org/Files/N3FJP_logging_hack-2023.pdf and
  2. a modified counties file, which you can find at

I say this every year, but as always, please don’t try this unless you are comfortable renaming, and moving files on your computer.

First, make sure that you have the most recent version of the N3FJP Ohio QSO Party IN-State QSO Party Log installed. I have tested this with Ohio QSO Party version 4.6.4, and it works like a charm. Use the Ohio In-State QSO Party Log Version 4.6.4 which is the latest Scott charges a very minimal fee for this software.


If you do not have the software installed, do so now. Enter your registration code that Scott will send you, and ensure that everything works. All set? Cool! Now let’s lift the hood!

Make sure to download both files I mentioned above. One are the instructions; the other the data file. Let’s start with a couple Caveats:

1) You are modifying the N3FJP OHQP software to do something that it was not designed to do. If you keep this in mind, then this can be a valid option for OSPOTA. I’ve used it for the last several years, and it works like a charm for OSPOTA. It also logs the band & frequency from your rig. All that is required is a replacement of one file.

2) Don’t rely on this for scoring. This modification is for duping purposes only. You will do the scoring after the contest ends.

3) PLEASE Make sure that your computer clock is correct, and that you are logging in UTC. For you Multi transmitter groups, this applies to ALL computers on your logging network.

After the contest cabrillo generation is a snap.

1) Look at the File menu for “Write Cabrillo (Contest Submittal) File”, and click it. Once you create your Cabrillo file, and save it to your computer, open it in a text editor, and correct as needed. For instance: CONTEST: MRCC-OHQP should be changed to CONTEST: OSPOTA CLAIMED SCORE This entire line can be deleted since we use the score from the summary sheet that you fill out and submit.

2) Save cabrillo using the convention “[YOUR CALLSIGN].log“, and you are good to go. This is the cabrillo that you will submit with your summary sheet.

Look for more information soon on formatting Cabrillo files.

John Myers, WG8X

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