Lowrance CHIRP -
2014 Oct 12
The ‘buzz’ word in sonar these days is CHIRP (Compressed High Intensity Radiated Pulse) technology. At first I had no interest in it as I am a shallow water (8ft-300ft) inland / coastal angler, and I was under the impression that CHIRP is for 1000ft plus users only.
Then all of a sudden people started talking about ‘CHIRP Lite’, which is essentially the name given to a low power affordable shallow water fishfinder. The unit that made me reach for my wallet was the launch of the Lowrance Elite-7 CHIRP. I had a pretty realistic expectation of the unit as the release video by Lowrance was not that impressive, but I am a ‘sonar addict’ so I had to try it for myself.
My first time out did not impress me at all as I could see no improvement whatsoever over the standard 200/83kHz while trolling (3mph). Then I found a brushpile with fish on it and sat above it while dropshotting to it. The Medium CHIRP gave a much cleaner water column without having to turn the sensitivity down. This meant that I could track my lure and the fish a lot better than traditional 200/83kHz. This statement has previously earned me comments such as “this is an inexperienced CHIRP user”, which I cannot deny, but those were my honest findings and I still stick by my statement months later.
After several months of using the Elite-7 CHIRP and continually tweaking the settings, I still could not get a better result and could not understand why. Then one day while playing with the unit on simulation using a few recordings I took previously I found something very strange … a major loss in history resolution as one changes from 200kHz / 83kHz / High CHIRP / Medium CHIRP.
So I went out and logged an area using the four frequencies over a course of the exact distance in meters. Take note that I was idling along the exact course at the exact same speed for all four passes. The most shocking is how slow the Medium CHIRP scrolls when compared to the 200kHz, and the result – nearly 50% loss in history resolution. (p/m = pixels per meter)
Battle of the HF Down Sonar -
Lowrance StructureScan LSS-1 / HDS9 LSS-2 /Garmin GCV10 / Humminbird ONIX
2014 Sep 04
We often embellish memories of past technology when new and better equipment gets released to the public. For this reason I decided to put the old original Lowrance LSS-1 (StructureScan) up against the latest gear Garmin and Lowrance have in the mid-range sonar market just to see how we have advanced.
I have followed the exact course and speed for each unit to keep it fair.
Here is the original StructureScan LSS-1 -
Garmin SideVu - Range in Perspective
2014 Jul 13
So often we get lost in numbers that it doesn't really mean much after a while.
SpotlightScan - The Transducer
2014 Mar 06
The SpotlightScan is Lowrance's reply to Humminbird's 360º.
Lowrance Elite-7 - Increase Coverage Tip
2013 Aug 10
With the launch of the new Hybrid Dual Imaging (HDI) units by Lowrance, high frequency sonar has become very affordable. What Lowrance has done, is take their award winning Broadband Sonar (83/50/200kHz) to create clean fish arches, and combined it with their life like DownScan Imaging (455/800kHz) in a single transducer.
Putting SideScan into Perspective
2013 Jun 10
Finding objects with your SideScan is a relatively easy task, but how do you put what you have discovered into perspective, and ultimately fish these Points of Interest (POI)? Are you left with a single dot with a number next to it on your GPS screen, and a vague memory of what the POI looked like?
Lowrance Elite-7 HDI - First Impressions
2013 Feb 12
The Elite 7 is a quite a nice range 'filler', where it incorporates conventional 2D sonar (200/83kHz) with high frequency (455/800kHz) DownScan Imaging. This is a good idea, because until now you would have had to go all the way to the HDS range, or buy two seperate Elite displays in order to get the benefit of both technologies. For all the specs and marketing details you can visit the Lowrance website.
Lowrance HDS Touch - First Impressions
2012 Oct 01
The only segment of the fishfinder / chart plotter / combo market that Lowrance had not tapped into, was the touch screen feature. Many users out there that preferred a touch screen paid a hefty price, and I’m not talking about actual cash. I’m talking about inferior sonar, no high frequency down scan and side scan imaging and nowhere near the networking capability of the Lowrance HDS range. This has all changed now with the launch of the HDS Gen2 Touch.
Intro Video - FishTec
Lowrance SA Pro - Brendon van Zuydam
2011 Jan 16
Lowrance HDS - Inanda Dam
2010 Aug 07
Once again, sticking to the plan of not putting a line in the water until bass were spotted on the sonar paid off.
The 200kHz Transducer
2009 Oct 20
This has got to be the most commonly used transducer used by anglers today, and possibly of all time. In the last year or so, the average angler has started to become aware of all this technology and what it means to him / her as an angler. This frequency has been the bottom finder, structure finder and fish finder all ‘bottled’ into one little unit. Unfortunately like all else in life, it is an extremely rare occurrence when a single component does all tasks equally well all the time. The 200kHz’ strength is the ability to determine bottom and structure extremely well. The 83kHz is the true fish finder frequency.
Transducer Installation (Transom)
2009 Oct 16
Transducer Quality "Q" - Airmar
2009 Sep 04
"What is “Q”?