FSK LINK CONFIGURATION AND TEST WORKSHEET
Yenra | Updated September 10, 2026
Guide: https://yenra.com/fsk-transceiver/
Frequency-offset reference: https://www.ti.com/lit/an/swra122d/swra122d.pdf

Use in a text editor to record a documented configuration at both ends.
This worksheet is not a register recipe or authorization to transmit.
Use a permitted configuration and suitable controlled test arrangement.

Hardware / firmware / datasheet revisions:
Frequency (MHz):
Modulation / shaping parameter:
Bit rate (bit/s) and symbol rate (symbol/s):
Deviation, one-sided (kHz):
Receiver channel-filter bandwidth (kHz):
Frequency-error budget TX / RX (ppm; include temperature and aging):
Packet format, preamble, sync, length, coding and CRC:
Supply voltage (V):
TX power (dBm):
Antenna and matching network / enclosure:
Receiver and transmitter settings verified compatible:

HYPOTHETICAL ARITHMETIC EXAMPLE
433.920 MHz center, +/-5 kHz deviation:
tones 433.915 and 433.925 MHz; separation 10 kHz.
10,000 uncoded binary bit/s -> 100 microseconds per symbol.
Each endpoint +/-20 ppm:
433.920 MHz * 20 / 1,000,000 = 8.6784 kHz per endpoint.
Opposite endpoint errors -> approximately 17.3568 kHz relative offset.
If separately established signal bandwidth is 20 kHz:
ideal centered-filter span >= 20 + 2*17.3568 = 54.7136 kHz.
This is a geometric lower bound. Use device-specific filter margin,
response, acquisition and configuration guidance for a real setting.

TEST RECORD (copy for each run)
Date / temperature / location / test arrangement:
Distance and antenna orientation if relevant:
Changed parameter and previous baseline:
Distinct packets sent:
First-attempt valid packets received:
Duplicates / CRC failures / other counters and their definitions:
Retries enabled and retry policy:
RSSI units and sampling rule:
Packet loss % = 100*(sent - first-attempt valid)/sent
Example: 1,000 sent, 980 valid -> 2% first-attempt loss.
Result and interpretation:
Configuration file / capture location:
Next check: