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wtleaver EVDO User
Joined: 24 Jul 2007 Posts: 34 Location: Nashville, TN, USA
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Posted: Sun Feb 10, 2008 10:16 pm Post subject: CTR-350 vs PHS-300 Wifi signal strength |
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Has anyone else used both of these? The wifi signal strength of the PHS-300 seems far weaker than the CTR-350, just wonder if anyone else has observed the same?
I don't guess it matters much, as I'm picking up the MBR1000. But, for now I'm usin the PHS-300 but finding that I can't, for example, park the car in the restaurant parking lot and still get a signal inside the restaurant, at distances where I could with the CTR-350.
I suppose they may have lowered the output figuring people would carry the PHS-300 around and use the battery? Or, perhaps for battery life they had to under-power the wifi radio? |
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JoeCHecht EVDO Junkie
Joined: 05 Jan 2008 Posts: 345
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Posted: Mon Feb 11, 2008 4:02 am Post subject: |
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I believe I get the same results comparing the CTR-350 to the PHS-300.
I am also gonna pick up an MBR100. My only question is how much of a regulated voltage power supply will it require when powering from a 12 volt auto or marine battery system (I dont want to leave an inverter on all night just to pwoer the router, even if I do have an isolated battery system for the inverters).
If I understand it correctly, the unit requires 12V@1.5amp.
I am guessing that is a regulated 12V (note that auto/marine systems can go up over 16V or more when charging, and hover between 11.whatever and 14.whatever volts), so the unit may require a regulated 12VDC TO 12DC adapter if you are going to power it from a auto/marine system.
Joe
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jackrodgers EVDO Addict
Joined: 23 Mar 2006 Posts: 1131
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Posted: Mon Feb 11, 2008 7:02 am Post subject: |
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There may be reasons for weakening the signal of a battery power truly mobile device.
One being that whereas a fixed wifi device would be adjusted for interfering with neighboring devices using the same channel, a mobile device could cause interruptions and disturbances throughout its journey.
A weakened signal would be a courtesy towards all of those fixed wifi networks you surf through.
I wonder if the FCC mandates this? |
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Alex Site Admin
Joined: 19 Sep 2006 Posts: 2304 Location: Dallas, TX
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Posted: Mon Feb 11, 2008 7:38 am Post subject: |
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my wifi range testing showed that CTR and PHS had very similar range.
is it possible you adjusted wifi power setting on PHS300 by accident? |
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JoeCHecht EVDO Junkie
Joined: 05 Jan 2008 Posts: 345
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Posted: Mon Feb 11, 2008 2:25 pm Post subject: |
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| Alex wrote: | my wifi range testing showed that CTR and PHS had very similar range.
is it possible you adjusted wifi power setting on PHS300 by accident? |
I suspect the CTR-350 and the PHS-300 have the same innards with the exception of the power regulation/battery/case.
If I ever blow a PHS-300, I will take it apart and have a "look-see", and compare it with the CTR-350 I blew out and took apart.
FWIW, the CTR-350 apparently has two antenna taps inside, that might work well with an external antenna (dont know if it is FCC legal to hook something up).
Joe |
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wtleaver EVDO User
Joined: 24 Jul 2007 Posts: 34 Location: Nashville, TN, USA
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Posted: Mon Feb 11, 2008 5:42 pm Post subject: |
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| Alex wrote: | my wifi range testing showed that CTR and PHS had very similar range.
is it possible you adjusted wifi power setting on PHS300 by accident? |
I don't recall changing any wifi power settings on either device. Which settings are you referring to specifically?
I have "Advanced -> Advanced Wireless -> Transmit Power" set to High.
I wonder if stepping down "Basic -> Wireless -> Transmittion Rate" down will improve range? Probably not - I think it's generally the client that automatically steps the rate down as the signal strength from the router weakens. |
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Hardware EVDO Heavy User
Joined: 07 Dec 2007 Posts: 141
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Posted: Tue Feb 12, 2008 9:50 am Post subject: |
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It doesn't happen often, but you can overpower your wireless radio and cause huge amounts of packet loss.
You can set it to low and see if this is the case, but it's unlikely. |
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