Lowrance Elite CHIRP

CHIRP or Compressed High Intensity Radiated Pulse is becoming more and more common place in sonar circles of late.


Lowrance has this great introduction video to the technology - https://www.youtube.com/watch?featur...&v=YgHE7iEo9UM


And here is the marketing video - http://www.youtube.com/watch?feature...&v=vekHn8XpQSg


The part of the last video that really stands out for me is this ...
https://scontent-a-vie.xx.fbcdn.net/...45268046_n.png


Knowing this, I thought I'd ask you sonar gurus and pro-staff guys what you think of the actual results, and see if you can identify which frequency is which.


I took an Elite7 CHIRP and recorded four passes of the exact route using a different frequency in each recording, CHIRP Medium, 200kHz, CHIRP High and 83kHz.


The section I chose has a bit of everything, including a small shoal of +/-500g bass swimming around the area, here is one that I picked up to show you.
https://fbcdn-sphotos-g-a.akamaihd.n...90294575_n.jpg


Unfortunately there will never be exactly the same fish in each pass, so you are going to have give merit to the quality of the sonar, and not the number of arches for example.


Here are the four passes -
http://www.fishtec.co.za/comp02a.jpg


Please label (A,B,C & D) which frequency is which, and which do you personally prefer for quality of arch and quality of bottom detail (A,B,C or D) -


Copy this template -


High CHIRP -
Medium CHIRP -
200kHz -
83kHz -


Bottom Definition -
Fish Arch Detail -

My WAG. BTW no guru or pro staff here, the only thing I'm really good at is xxxxxx the wife off :biggrin.



High CHIRP - C
Medium CHIRP - A
200kHz - B
83kHz - D

:yikes
High Chirp::::A
Med Chirp:::::C
200kHz::::::::B
83kHz:::::::::D

A = Med Chirp
B = 200 Khz
C = High Chirp
D = 83 kHz

Here are the results, which fishton posted on several boards, but forgot to come back to crappie.com.
----------------------------------------------------------------------------------------------------

Thanks to everybody who made the effort.


Here are the answers -


High CHIRP - C
Medium CHIRP - D
200kHz - A
83kHz - B

​Fisherman's Guide to Sonar by John Easton / FishTec

My apologies, thanks hawk22. :highfive

Well...............I got one right.

Share your setting now. Yours likes way better than mine. I've only got to use my 7 CHIRP once so far.

Basically it is default with a few minor adjustments to the sensitivity as you change through the frequencies, and I like White with bottom track as palette.