The catch
Garmin ECHOMAP UHD2 73cv
Side imaging is left out of the 73cv package.
Side by side
Garmin ECHOMAP UHD2 73cv vs Humminbird HELIX 7 CHIRP MEGA SI GPS G4N: HELIX handles side imaging and leaves room for a live-sonar network later
Quick verdict
HELIX 7 suits you if side imaging and a live-sonar network down the road are priorities. ECHOMAP 73cv is the better choice for a no-fuss inland chart and ClearVu package.
Before you buy
Why, and what it costs you
Where these two really part ways
Humminbird HELIX 7 MSI GPS G4N is the better match for “Scan to port and starboard” and “You navigate coastal water”.
Where this comes from
This lines up the current strong and useful fit ratings for the exact products. It does not roll them into one overall score.
The catch
Humminbird HELIX 7 MSI GPS G4N
Adding networking and live sonar brings extra hardware, wiring and cost.
Garmin ECHOMAP UHD2 73cv
- Why pick it
- You map an uncharted lake
- Revisit saved fishing spots
- The catch
- Side imaging is left out of the 73cv package.
Humminbird HELIX 7 MSI GPS G4N
- Why pick it
- You scan to both sides of the boat
- You navigate coastal water
- The catch
- Adding networking and live sonar brings extra hardware, wiring and cost.
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What this page compares
Weighing Garmin ECHOMAP UHD2 73cv against Humminbird HELIX 7 CHIRP MEGA SI GPS G4N on display and mounting, sonar and depth, charts and bundle.
This one comes down to sonar and depth first, then to the limits of your own setup.
Which one fits
Pick the situations that sound like you
Scan to port and starboard
Both models list “It supports mapping and the transducer is included” for charts and bundle. Both models show the same result for “Charts and bundle”, so this row won't decide between them.
- Garmin ECHOMAP UHD2 73cv
- Depends
- Humminbird HELIX 7 MSI GPS G4N
- Better fit
You navigate coastal water
Either coastal charts come with the identified bundle, or it supports the required coastal chart card.
- Garmin ECHOMAP UHD2 73cv
- Depends
- Humminbird HELIX 7 MSI GPS G4N
- Better fit
Live sonar can come later
Both models list “It pairs with a 7-inch display. It is meant for small boats and console installations” for display and mounting. Both models show the same result for “Display and mounting”, so this row won't decide between them.
- Garmin ECHOMAP UHD2 73cv
- Depends
- Humminbird HELIX 7 MSI GPS G4N
- Better fit
Connect to a trolling-motor network
The brand network is documented as supporting compatible trolling motors and accessories.
- Garmin ECHOMAP UHD2 73cv
- Good
- Humminbird HELIX 7 MSI GPS G4N
- Better fit
You map an uncharted lake
Garmin ECHOMAP UHD2 73cv lists “Check the transducer depth limits. No side-imaging claim is recorded” for sonar and depth, while Humminbird HELIX 7 MSI GPS G4N lists “Check the transducer depth limits. Side imaging is included”. This sets how much of the water column the unit can read in the conditions it is built for.
- Garmin ECHOMAP UHD2 73cv
- Similar
- Humminbird HELIX 7 MSI GPS G4N
- Similar
In practice
Differences you will notice
Where these two really part ways
Humminbird HELIX 7 MSI GPS G4N is the better match for “Scan to port and starboard” and “You navigate coastal water”.
How we worked this out
This lines up the current strong and useful fit ratings for the exact products. It does not roll them into one overall score.
These needs do not split the pair
Both meet the same 2 of the 2 needs this comparison is built around, so the choice comes down to “sonar and depth”.
How we worked this out
Both products are checked against the same needs. The first verified differences still standing are named here.
Models that handle “You map an uncharted lake” and “Head back to saved fishing spots”
16 of the 23 fish finders checked handle both “You map an uncharted lake” and “Head back to saved fishing spots”. Both make the cut.
How we worked this out
You can reproduce the count by filtering the current category for models with a strong or useful fit on both needs.
Option A
Garmin, ECHOMAP UHD2 73cv with GT20-TM
Garmin ECHOMAP UHD2 73cv
The 7-inch display ships with a transducer in the named Amazon configuration.
- Best for
- build your own map of an uncharted lake and get back to saved spots
Facts we checked
- A 7-inch display is built in.
- A transducer comes with the named Amazon configuration.
- The named configuration leaves out side imaging.
- The unit supports charting or live mapping.
Option B
Humminbird, HELIX 7 CHIRP MEGA SI GPS G4N
Humminbird HELIX 7 MSI GPS G4N
A transducer is included in the named Amazon configuration, and the display is 7-inch.
- Best for
- go back to saved fishing spots and map an uncharted lake
Facts we checked
- A 7-inch display is built in.
- A transducer comes with the named Amazon configuration.
- Side imaging comes with the named configuration.
- The unit supports charting or live mapping.
Spec by spec
Where they really differ
| Spec | Garmin ECHOMAP UHD2 73cv | Humminbird HELIX 7 MSI GPS G4N | In practice |
|---|---|---|---|
| Display and mounting | It pairs with a 7-inch display. It is meant for small boats and console installations. | It pairs with a 7-inch display. It is meant for small boats and console installations. | Both models show the same result for “Display and mounting”, so this row won't decide between them. |
| Sonar and depth | Check the transducer depth limits. No side-imaging claim is recorded. | Check the transducer depth limits. Side imaging is included. | It determines how much of the water column the unit can read under the conditions it was built for. |
| Charts and bundle | It supports mapping and the transducer is included. | It supports mapping and the transducer is included. | Both models show the same result for “Charts and bundle”, so this row won't decide between them. |
Trade-offs
What each pick costs you
With Garmin ECHOMAP UHD2 73cv
- The chart-region bundle you buy has to match the water you fish.
With Humminbird HELIX 7 MSI GPS G4N
- Splits work on a seven-inch screen, but many buyers go bigger when they want map, side scan and live sonar showing together.
Decision guide
How to decide
Side imaging and a possible future live-sonar network favor HELIX 7. A straightforward inland chart and ClearVu package favors ECHOMAP 73cv.
The gap that matters
MEGA Side Imaging and G4N networking come with HELIX.
What the specs tell you
Inland charts are in the identified Garmin 73cv bundle, but a SideVu transducer is not.
What this page can’t tell you
- Rated maximum depth varies by conditions.
- Transducer bundles can vary from retailer to retailer.
- Your boat’s layout can block side-imaging beams.
By the numbers
What the data shows
What we found across the fish finders we compare, plus the checked facts behind each finding.
How many fit
16 of the 23 models checked meet every need here: “You map an uncharted lake” and “Head back to saved fishing spots”.
16 models fit, out of 23 checkedShow the facts and the math
How we countedThe count uses each product's current fit ratings for “You map an uncharted lake” and “Head back to saved fishing spots”. A need with no documented match is not counted.
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| Garmin ECHOMAP UHD2 73cv |
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| Humminbird HELIX 7 MSI GPS G4N |
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Ready to buy
See today’s price and what owners say
Open either model on Amazon for the current price, customer reviews and delivery options.
Garmin ECHOMAP UHD2 73cv
You map an uncharted lake
See price & reviews on AmazonHumminbird HELIX 7 MSI GPS G4N
You scan to both sides of the boat
See price & reviews on AmazonEach link opens in a new tab.
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