04FJR4ME
Well-known member
bramfrankChipsets cost about $20 each at wholesale. Garmin doesn't manufacture their own chips, they don't own a fabrication facility. So they have to pay someone whether it's their design or Sirf's. Sirfstar has about 7 dB of performance benefit. Which is great if I'm in a parking garage - but previous chipsets work just fine in 99.9% of the locations where you will likely be operating.Lots of questiions about why the Zumo 550 is better then a 26xx, 27xx or 28xx or even the 276c or 376c. I have one strong answer to this question! SiRF III GPS receiver, the Zumo 550 has it and the others don't! What good is a GPS system if it fails to navigate due to GPS receiption issues. And yes, if Garmin does not have an issue with GPS receivers, they sure the heck is not going to PAY SiRF for their receiver when Garmin is a GPS receiver manufacture! You can all thank Clif Pemble for this one!Anyway, everyone have an opinion, but the fact of the matter is, Zumo 550 is a better unit over all in my opinion, but what do I know, I only beta test for most of these GPS manufactures.
So next time I need coverage in my living room I'll feel better knowing that the Sirfstar chipset is on board.
The Zumo isn't quite as excellent as I would have liked. The touchscreen is dead to a finger (but good with a finger nail). Pricing is nothing special - a 376c with a car kit is less expensive than Zumo (and comes with the XM Pod). Styling is funky. Battery life is short.
I'm not changing my units out quite yet.
You may never have used your GPS unit in an urban canyon environment or heavily wooded roads or you will not make this type of irresponsible statements.
Lets just say this about Garmin and SiRF, the SiRF III cost more then many other GPS receiver and it is not used in any of the 26xx, 27xx, 28xx, 276c, 376c for a reason. For everyone dollar Garmin saves on a GPS receiver, it is $4 at retail price level, and this is the exact reason only the top shelf Garmin GPS unit uses the SiRF III receiver.
In my backyard without a SiRF receiver, in certain area of Santa Cruz mountain the GPS reception is marginal if I am lucky and no reception on and off.
Alpine Blackbird uses a Centrality GPS receiver and their unit was unable to perform without an external GPS antenna in the City of San Francisco.
Your opinion is yours, do you offer your knowledge of GPS receiver to Garmin along with your opinion? I told Cliff Pemble 2 1/2 years ago that Garmin needed to switch to SiRF, his answer is Garmin makes their own GPS chip set and SiRF is a competition and that will never happen! Do you think Cliff enjoy being wrong. I think Garmin understands what is needed better then most of us, and for Garmin to stay competitive, they needed to use the SiRF receiver and not for any other reason as you may have suggested, including what you think their cost is only $20, it is necessary to be competitive with TomTom, Magellan, Mio, and just about every GPS manufacture representing PND units also using SiRF receiver.
Why is the SiRF III used only in the Nuvi's, C550, C530, Zumo 550 PND and some handheld devices that are used for hiking and geocaching? and not the other less expensive units if your theory is correct? The 7200 and 7500 along with the GVN52 is the exception, why? They expect the customer to use an external GPS antenna with these units. The price of SiRF cost to much to make sense for Garmin to have in every unit, and by the way no body is asking anyone here to buy a Zumo unit if they have a GPS unit they are happy with already, what I am saying is that the Zumo unit is better suited and design for motorcycle environment then a marine or automotive unit that is not touch screen, and does not have expansion features and does not have the extra abilities that comes with the Zumo.
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