Earlier today I accidentally ordered a Garmin, single frequency (200khz), transom mount transducer from an ebay seller in the US. I meant to order the dual frequency version but didn't read the description properly until later today - my bad!
I've contacted the seller who also sells the dual freq version and offered to pay the additional amount ($9) but unfortunately he's already dispatched the order. He's happy to exchange the item if I send it back but obviously I'll have to pay the postage both ways
Soooo.... my questions are....how important is it to have the alternative frequency and for general leisure use around the south coast is it likely to be a big advantage?
Am I right in thinking the lower freq (50khz) is for deeper water?
The the lower freq also operates at a slightly different angle, is this likely to help me in any way?
Cheers for any help chaps