Transducer Selection for Furuno GP-1971F with AIRMAR TM258

[rafaelmn]

Hello,

I would like some assistance regarding the correct transducer configuration for my equipment.

My sonar is a Furuno GP-1971F, and the transducer installed is an AIRMAR TM258 50/200 kHz.

When accessing the transducer selection menu on the GP-1971F, the available models for selection are the following:

TM165HW,
B175L,
TM185M,
B285M,
B175M,
B175H,
520-5PSD,
520-5MSD,
520-PLD (P319),
525-5PWD,
525T-PWD,
525T-BSD (B45),
525T-LTD/12 (B60-12),
525T-LTD/20 (B60-20),
525ST-MSD (B744V),
525ST-PWD (P66),
SS60-SLTD/12 (SS60-12),
SS60-SLTD/20 (SS60-20),
600W 50/200 kHz,
50/200-1T,
526TID-HDD (B260),
1kW 50/200 kHz,
TM150M,
B150M,
B75L,
B75M,
B785M,
B75H,
SS75L,
SS75M,
SS75H,
TM165HW,
B175L,
TM185M,
B285M,
B175M,
B175H,
TM185HW,
B285HW,
B175HW.

Since the TM258 is not listed among the selectable models, I would like to know:

1. Which transducer model should be selected to properly match the AIRMAR TM258 50/200 kHz?
2. If there is any recommended configuration or firmware update to ensure optimal performance with this transducer.

At the moment, I am having difficulty clearly detecting fish targets, so I want to make sure the transducer selection and settings are correct.

Thank you very much for your support.

Best regards,