[gps-talkusers] Re: Holux and number of satellites
- From: "Kevin Chao" <g.unit89@xxxxxxxxxxxxx>
- To: <gps-talkusers@xxxxxxxxxxxxx>
- Date: Mon, 15 Oct 2007 22:14:12 -0700
Jim,
Ahh, is that what it is? I guess the other three or so 236 that I have
laying around must work very well then, or what about that Earthmate? The
last time I fired up the Earthmate it wasn't to hot there, pulling in only
three or no satellites.
Kevin
-----Original Message-----
From: gps-talkusers-bounce@xxxxxxxxxxxxx
[mailto:gps-talkusers-bounce@xxxxxxxxxxxxx] On Behalf Of Jim Gammon
Sent: Monday, October 15, 2007 10:02 PM
To: gps-talkusers@xxxxxxxxxxxxx
Subject: [gps-talkusers] Re: Holux and number of satellites
Kevin, the Slim 236 is just afraid of losing its job to the m-1000. That's
why it worked so well, Ha Ha,
Jim
----- Original Message -----
From: "Kevin Chao" <g.unit89@xxxxxxxxxxxxx>
To: <gps-talkusers@xxxxxxxxxxxxx>
Sent: Monday, October 15, 2007 8:55 PM
Subject: [gps-talkusers] Holux and number of satellites
> Mary,
>
> It is interesting because I just fired up a unit that has the Holux
> GPSlim236 and it reported 11 satellite for most of the trip and there were
> even a few times when I hhad 12 satellites. I don't ever recall having 12
> satellites on the 236 for the year or so I used it and quite rareley did
> I
> ever get 11 satellites. I think the last time I used the 236 was in April
> and then on average I had between 7-10 satellites. But the funny thing
> was,
> the entire evening I never received WAAS.
>
> So when you think you have this satellite business down, it hits you in
> the
> back.
>
> Kevin
>
> -----Original Message-----
> From: gps-talkusers-bounce@xxxxxxxxxxxxx
> [mailto:gps-talkusers-bounce@xxxxxxxxxxxxx] On Behalf Of Mary Ellen Earls
> Sent: Monday, October 15, 2007 5:53 PM
> To: gps-talkusers@xxxxxxxxxxxxx
> Subject: [gps-talkusers] Re: e: My Latest Experience with GPS
>
> Interestingly I get 11 satellites quite frequently here where I am living
> now. I have the Holux 236.
>
> ----- Original Message -----
> From: "Kevin Chao" <g.unit89@xxxxxxxxxxxxx>
> To: <gps-talkusers@xxxxxxxxxxxxx>
> Sent: Monday, October 15, 2007 3:04 PM
> Subject: [gps-talkusers] Re: e: My Latest Experience with GPS
>
>
>> The higher the amount of channels means the more satellites that you are
>> able to track at any one given time, in GPS terms this is called
>> "parallel
>
>> tracking." I have found through personal experience that the M-1000 that
>> has 32 channels will track in the range of 10-12 satellites quite
>> frequentley while the GPSlim236 using the SIRF STAR III will track in the
>> range of 8-10 satellites quite frequentley. I think the thing to really
>> pay attention to is the sensativity and battery life of the recievers as
>> there really is only a maximum of 12 satellites that are viewable at any
>> point in time.
>>
>> If you wish to continue this discussion, please send me a private message
>> at: g.unit89@xxxxxxxxxxxxx
>>
>> I am sure this is more than many wanted to know.
>>
>> Kevin
>> ----- Original Message -----
>> From: "Scott Granados" <gsgranados@xxxxxxxxxxx>
>> To: <gps-talkusers@xxxxxxxxxxxxx>
>> Sent: Monday, October 15, 2007 2:54 PM
>> Subject: [gps-talkusers] Re: e: My Latest Experience with GPS
>>
>>
>>> So what are they doing with the extra channels? Could you explain if
>>> it's not off topic a little on how the number of channels improves the
>>> functionality. Do the birds broadcast more data on more channels or
>>> what's the deal?:) What does 12 do and what does 20 offer that 12
>>> doesn't and 32? Thanks!
>>>
>>>
>>> Thanks
>>>
>>> ----- Original Message -----
>>> From: "Kevin Chao" <g.unit89@xxxxxxxxxxxxx>
>>> To: <gps-talkusers@xxxxxxxxxxxxx>
>>> Sent: Monday, October 15, 2007 2:52 PM
>>> Subject: [gps-talkusers] Re: e: My Latest Experience with GPS
>>>
>>>
>>>> You are correct in the TTF (time to first fix). The newer recievers
>>>> that
>
>>>> are using the MTK chipset that were introduced towards the end of last
>>>> year now have 32 channels. Here is what has what in terms of Sendero
>>>> past receivers:
>>>> Earthmate Blue Logger, SIRF STAR II, 12 channels
>>>> Holux GPSlim236, SIRF STAR III, 20 channels
>>>> Holux M-1000, MTK, 32 channels
>>>>
>>>> All of this information along with the TTF can be found in their
>>>> respective user guide.
>>>>
>>>> I didn't list recievers beyond this because I am not sure what they
>>>> are.
>>>>
>>>> Kevin
>>>> ----- Original Message -----
>>>> From: "Scott Granados" <gsgranados@xxxxxxxxxxx>
>>>> To: <gps-talkusers@xxxxxxxxxxxxx>
>>>> Sent: Monday, October 15, 2007 1:45 PM
>>>> Subject: [gps-talkusers] Re: e: My Latest Experience with GPS
>>>>
>>>>
>>>>> Actually, and someone please pipe in if I'm way off but the channel
>>>>> numbers are 12 or 20. The us-globalsat 338 and 358 are 20 channel
>>>>> units.
>>>>> As for the time to fix remember there are different start states
>>>>> for
>
>>>>> your receiver so when you power up you may or may not enter a given
>>>>> start state. A new fix I.E. starting the unit up for the first time
>>>>> takes a few seconds. Around 40 sounds average. However, from a hot
>>>>> start state you can sync up in sub 1 second depending. So your time
>>>>> to
>
>>>>> aquizition will vary.:)
>>>>>
>>>>> ----- Original Message -----
>>>>> From: "Ken Perry" <kperry@xxxxxxxxxxxxx>
>>>>> To: <gps-talkusers@xxxxxxxxxxxxx>
>>>>> Sent: Monday, October 15, 2007 9:59 AM
>>>>> Subject: [gps-talkusers] Re: e: My Latest Experience with GPS
>>>>>
>>>>>
>>>>>>
>>>>>>
>>>>>> Nod this helps I use the BT 338 and it is rated at 38 seconds but I
>>>>>> find
>>>>>> along with the reviews I have read on line I get a fix with in 2 to 3
>>>>>> seconds. So I was wondering how they could get faster. I think its
>>>>>> more
>>>>>> important to look for the channels which I think is 32 on the Holux
>>>>>> m-1000
>>>>>> where the BT 338 only has 20. I wonder though if it is better than
>>>>>> the BT
>>>>>> 338 though because they say the BT can pick up signals as low as 13
>>>>>> DB
>
>>>>>> from
>>>>>> satellites when normal gps receivers are rated at no lower than 20
>>>>>> db.
>
>>>>>> I
>>>>>> couldn't find the db rating for the Holux does it say in the manual?
>>>>>> I will
>>>>>> go see if I can find it on line.
>>>>>>
>>>>>> Ken
>>>>>>
>>>>>> -----Original Message-----
>>>>>> From: gps-talkusers-bounce@xxxxxxxxxxxxx
>>>>>> [mailto:gps-talkusers-bounce@xxxxxxxxxxxxx] On Behalf Of Chris
>>>>>> Grabowski
>>>>>> Sent: Monday, October 15, 2007 9:05 AM
>>>>>> To: gps-talkusers@xxxxxxxxxxxxx
>>>>>> Subject: [gps-talkusers] Re: e: My Latest Experience with GPS
>>>>>>
>>>>>> Hi,
>>>>>> According to the manual the Holux m-1000 cold start is rated at 36
>>>>>> seconds.
>>>>>> The majority of the time, I turn on my m-1000 then the bn then enter
>>>>>> GPS.
>>>>>> I normally have a fix quite rapidly after that.
>>>>>> Hope this helps.
>>>>>> Chris
>>>>>> On Mon, 15 Oct 2007 08:45:02 -0700, "Ken Perry"
>>>>>> <kperry@xxxxxxxxxxxxx>
>>>>>> wrote:
>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>I have seen a few posts about the holux m-1000 and that it would
>>>>>>>cause
>>>>>>>better boot up speeds. I am currently not using the Sendero GPS
>>>>>>>product and am interested in how long it takes for most people to get
>>>>>>>connected with the satellite.
>>>>>>>
>>>>>>>Ken
>>>>>>>
>>>>>>>-----Original Message-----
>>>>>>>From: gps-talkusers-bounce@xxxxxxxxxxxxx
>>>>>>>[mailto:gps-talkusers-bounce@xxxxxxxxxxxxx] On Behalf Of richard
>>>>>>>synnott
>>>>>>>Sent: Monday, October 15, 2007 2:23 AM
>>>>>>>To: gps-talkusers@xxxxxxxxxxxxx
>>>>>>>Subject: [gps-talkusers] e: My Latest Experience with GPS
>>>>>>>
>>>>>>>Hi Joleen,
>>>>>>>what receiver are you using?
>>>>>>>if you're not currently using the holux m-1000, I'm sure this would
>>>>>>>improve things greatly regarding sattellite tracking, accuracy and
>>>>>>>boot-up time if you were to acquire one.
>>>>>>>On the other hand, if you are using the m-1000, I don't know what to
>>>>>>>suggest other than to say it sounds like a mapping problem.
>>>>>>>Don't give up, though.
>>>>>>>All the bestst, Richard.
>>>>>>>
>>>>>>>> ----- Original Message -----
>>>>>>>>From: Joleen <cjferg@xxxxxxxxxxx
>>>>>>>>To: gps-talkusers@xxxxxxxxxxxxx
>>>>>>>>Date: Sun, 14 Oct 2007 18:08:36 -0700
>>>>>>>>Subject: [gps-talkusers] My Latest Experience with GPS
>>>>>>>
>>>>>>>>Hi All,
>>>>>>>
>>>>>>>>Let me share my latest experience with GPS.
>>>>>>>
>>>>>>>>Yesterday I was traveling to a camp site where my driver had
>>>>>>>>forgotten
>>>>>>>>to bring his map.
>>>>>>>
>>>>>>>>With a sense that I could be of real help, I took out my GPS and
>>>>>>>>created a route from Yakima to Camp Ghormley. I was able to give
>>>>>>>>directions. At one point, we turned onto a gravel road. It turned
>>>>>>>>out to be a very poor road with wash-out areas. After traveling
>>>>>>>>several miles on this "path" my BN announced that we had arrived!
>>>>>>>>Where were we? No where! The camp was not anywhere around there.
>>>>>>>
>>>>>>>>With my hopes dashed, we turned around and made our way back to the
>>>>>>>>road more traveled. Eventually we found the right turn and I put a
>>>>>>>>user POI at the camp entrance.
>>>>>>>
>>>>>>>>My bad luck again. The actual camp entrance was 3.48 miles from the
>>>>>>>>GPS location. After this and previous experiences, I now am shy of
>>>>>>>>using my GPS to do any navigation for others.
>>>>>>>
>>>>>>>>Still eager to make GPS work for me, I took time to fire it up as I
>>>>>>>>was shown from the cabin to the main lodge. Confident that I had
>>>>>>>>learned well how to create a manual route, I set out. I put in a
>>>>>>>>series of way points along the trail. All seemed well.
>>>>>>>>However, after dinner and when it was dark, I found someone else who
>>>>>>>>was also staying in my cabin. She was not sure of the direction.
>>>>>>>>Again, I suggested that my GPS could help us in the dark. I started
>>>>>>>>it up and had to pair the receiver due to a spontaneous BN crash and
>>>>>>>>reset earlier in the afternoon.
>>>>>>>>Eventually I was successful in getting the BN and receiver to see
>>>>>>>>each
>>>>>>>>other. Then there was a long wait for a fix. My friend remained
>>>>>>>>patient. Eventually there was success. Now, all I had to do was to
>>>>>>>>reverse the route. All I could get from it was that I could not
>>>>>>>>recalculate the route. It was only after I gave up and followed her
>>>>>>>>guesses that we made our way to the cabin.
>>>>>>>>There, I worked with it until I realized that I had probably exited
>>>>>>>>the main lodge at a door different from the one I had set as a way
>>>>>>>>point.
>>>>>>>>Both doors would have been on the same side of the building, but I
>>>>>>>>suspect that they were more than 30 feet apart.
>>>>>>>
>>>>>>>>One more try. When I was ready to come home, all I needed was to
>>>>>>>>get
>>>>>>>>my luggage from the cabin. My driver had not been to the cabin and
>>>>>>>>there seemed to be no one to ask. Again, I tried my GPS. This
>>>>>>>>time,
>>>>>>>>I knew it could help because I had a user POI.
>>>>>>>>It must have taken ten minutes to acquire a fix. Meanwhile, We got
>>>>>>>>into the car and he drove around trying to spot the cabin.
>>>>>>>>As we pulled up to it, my GPS announced that we had arrived. It was
>>>>>>>>too late to be of any benefit this time. He had seen the sign far
>>>>>>>>earlier than the GPS.
>>>>>>>
>>>>>>>>I am afraid my GPS is becoming a source of great humor. No one will
>>>>>>>>trust it. I am afraid that in my circumstances, I have little
>>>>>>>>confidence that it can be relied upon for much of anything.
>>>>>>>
>>>>>>>>I am grateful that Tele Atlas is looking at the major discrepancies
>>>>>>>>in
>>>>>>>>my home town. However, the wilderness areas of Washington state
>>>>>>>>also
>>>>>>>>seem to be questionable as my trips to two different camp sites in
>>>>>>>>very different parts of the state have both yielded errors of 3.5
>>>>>>>>miles.
>>>>>>>
>>>>>>>>Trying to be enthusiastic about my GPS.
>>>>>>>
>>>>>>>>Joleen
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>
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>>
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