ASCII to ADIF Conversion: Easily Import Logfiles into Your Logger

ASCII to ADIF: The Ultimate Troubleshooting and Formatting Guide

Converting ASCII text files to Amateur Data Interchange Format (ADIF) is a common task for ham radio operators moving logs between software. While the process seems simple, formatting mismatches frequently cause data corruption or import failures. This guide covers how to structure your files, map essential data fields, and troubleshoot the most common conversion errors. Understanding the Formats

ASCII is plain, unstructured text. ADIF is a standardized, tag-based format used by logging programs to exchange contact data.

To turn ASCII into ADIF, you must wrap your raw text into specific ADIF tags. Every ADIF data field uses the format data. Each contact record must end with an (End of Record) tag. Step-by-Step Formatting Guide 1. Header Construction

Every valid ADIF file should begin with a header. Logging programs use this to identify the file version and the software that generated it. The header must end with an (End of Header) tag.

Generated by ASCII-to-ADIF Converter 3.1.4 PROGRAMID:7MyLogv1 Use code with caution. 2. Mandatory Fields Mapping

To ensure your target logging software accepts the file, you must map the core components of a Qualification Contact (QSO). Callsign: CALL:6W1AW (The callsign of the station worked) Date: 20260604 (YYYYMMDD format)

Time: 2005 or 200532 (HHMM or HHMMSS format in UTC)

Band: BAND:320M (Must be standard band designators like 20M, 40M, 2M)

Mode: MODE:3CW (Must match official ADIF modes like CW, SSB, FT8) 3. Assembling a Record

Combine the fields horizontally or vertically. Spaces and line breaks outside the tags are ignored by standard parsers.

CALL:5G4BIP 20260604 1422 BAND:320M MODE:3SSB 59 59 CALL:6N6VOW 20260604 1435 BAND:340M MODE:3FT8 -11 -08 Use code with caution. Common Troubleshooting Scenarios Error: Missing or Rejected Records Cause: Incorrect character count in the tag.

Fix: The number inside the tag must exactly match the number of characters in the data string. For example, CALL:4W1AW is correct. If you write CALL:5W1AW, the parser will grab the next character (often a space) and corrupt the subsequent tags. Error: Times and Dates Appending Incorrectly Cause: Using local time or improper date separators.

Fix: Strip out all dashes, slashes, and colons. ADIF dates do not look like 2026-06-04; they must look like 20260604. Times must be strictly in Coordinated Universal Time (UTC). Error: Custom Fields Missing After Import

Cause: Target software does not support user-defined fields.

Fix: Check the ADIF specification of your target program. If you are importing specialized data like SOTA (Summits on the Air) references, ensure you use the exact official tag name, such as W6/CT-001. Error: Illegal Mode or Band Failures Cause: Using non-standard names like “20 meters” or “FT-8”.

Fix: Standardize your ASCII data before converting. Use 20M instead of “20 meters”, and FT8 instead of “FT-8”. Automated Conversion Tools

If manual editing in a text editor like Notepad++ or VS Code is too tedious, use dedicated conversion utilities:

LogConv by KA5DNY: Excellent for mapping CSV or delimited ASCII files to ADIF.

ADIF Master: A spreadsheet-like interface that allows you to open raw data, map columns to ADIF tags, and export cleanly.