Re: Wireless band choice

[Neil Houghton]

Hi Stephen,

I guess that all depends on the modem Telstra send you and how they have it
configured.

Some Telstra modems certainly do (or did) use separate networks for each
frequency 
­ from 


> Note: A Telstra Gateway Max has two network names because it can operate in
> either 2.4GHz or 5GHz frequencies. 5GHz gives faster speeds if you are
> watching video, but 2.4GHz can help extend the range of your Wi-Fi network.

Which confirms what Brian was saying about the relative merits of each
frequency.

Out of interest, which frequency does your computer connect at ­ and is it
always at that frequency?


Cheers



Neil
-- 
Neil R. Houghton
Albany, Western Australia
Tel: +61 8 9841 6063
Email: n...@possumology.com






on 9/2/17 12:59, Stephen Chape at chap...@bigpond.com wrote:

> Hi Neil,
> 
> I stopped using the Apple Time Capsule about 3 years ago when it finally died.
> Then started a new contract with Telstra Bigpond who provided me with a Modem
> already set up.
> But I have only ever had one WiFi network.
> 
> 
>> On 9 Feb 2017, at 11:48 am, Neil Houghton  wrote:
>> 
>> Re: Wireless band choice
>> Hi Stephen,
>> 
>> Not sure which device you actually used to set-up your wireless ­ the modem
>> or the Time Capsule ­ often with this set-up people turn off the wireless on
>> the modem and use the time capsule to set-up the wireless network.
>> 
>> In my case here, the modem actually sets up two different wireless networks,
>> with slightly different network names, one on the 2.4GHz frequency and one on
>> the 5GHz frequency. The modem makes both networks available but, when you
>> connect your wireless device, you have to choose which network to join.
>> 
>> The situation you describe sounds different ­ the equipment setting up one
>> wireless network but utilising whichever frequency it thinks best to
>> transmit/receive network traffic between devices.
>> 
>> I¹m guessing that this is an Apple airport feature and that you had your
>> wireless network set-up by your Time Capsule (or other Apple device like an
>> Airport Extreme)?
>> 
>> 
>> 
>> 
>> Cheers
>> 
>> 
>> 
>> 
>> Neil

-- The WA Macintosh User Group Mailing List --
Archives - 
Guidelines - 
Settings & Unsubscribe - 

Re: Wireless band choice

[Ronni Brown]

Hi Neil,

I wasn’t going to attempt a reply as it involves a fairly complex reply. Not 
knowing what Modem or how it displays its settings/readings. I mainly deal with 
Apple Wi-Fi Networks this might helpful explanation to you… or not ;-)
---
RSSI (Receive Signal Strength Indication), is the relative signal strength in a 
wireless environment in arbitrary units.  
RSSI or received signal strength indication can go from 0 to -100 (for Apple - 
other vendors can measure it differently as RSSI has no stated units)

Apple appears to have decided to use a less negative number (closer to zero) to 
mean a stronger signal.

Signal-to-Noise Ratio (SNR)

One option in determining where to best place your AirPort base station is to 
measure its signal quality from a wireless client. In theory, where the signal 
quality is best would make for ideal candidates for placement. This would hold 
true for a single or multiple base stations in an extended wireless network.
 
One method to calculate signal quality is to compute the Signal-to-Noise Ratio 
(SNR). 
SNR is the signal level (in dBm) minus the noise level (in dBm). Both of these 
values are typically represented as negative numbers. For example, a signal 
level of -53dBm and a noise value of -90dBm would yield an SNR of 37dB (i.e., 
SNR = Signal - Noise = -53 -(-90) = 37)
 
The calculated SNR value, as measured from a wireless client, would decrease as 
the range to the base station increases due to applicable free space loss. Also 
an increase in RF interference from microwave ovens, cordless phones, walls, 
ceilings, etc, which would increase the noise level, would also decrease the 
overall SNR value.
 
SNR Guideline
40+dB = Excellent signal
25dB to 40dB = Very good signal
15dB to 25dB = Low signal
10dB to 15dB = Very low signal
5dB to 10dB = Little or no signal
 
The following are two methods to take signal & noise level readings:
 
Method 1 - Using iStumbler
Download and install a copy of iStumbler . Use 
iStumbler's Inspector feature (select Edit > Inspector from the iStumbler's 
menu) to take the signal and noise level readings.
 
Method 2 - Using OS X System Profiler / System Report
Click on the Apple icon on the menu bar > About This Mac > More Info >System 
Report > Network > Wi-Fi - Interfaces >  > Current Network Information > Find 
your wireless network > Signal / Noise

Jot down the numbers that you see here, for example  
 
-50 dBm / -90 dBm
 
SNR = Signal minus Noise, so using the example below:
 
-50 dBm - (-90 dBm) = 40 dB SNR

Regardless of which method you use to gather the reading, you would plug them 
into the SNR formula. The desired goal value is an SNR of 25+dB. At this SNR 
value, wireless clients should be getting reasonable throughput performance 
with the base station. This is also the value you would want at the location 
where you would want to place a second base station to extend the first if you 
are planning on extending the wireless range.

 
Then use the familiar chart to evaluate your signal quality.
 
• 40dB+ SNR  =Excellent signal
• 25dB to 40dB SNR = Very good signal
• 15dB to 25dB SNR = Low signal
• 10dB to 15dB SNR = Very low signal
• 5dB to 10dB SNR =   No signal

As you might imagine, the SNR will change in relation to the location of your 
Mac laptop to the router 

If you are getting SNR values of less than 25+dB at the client, either try to 
locate the source of the Wi-Fi interference or try relocating the base station 
until they are within a 25+dB range.
—
My Airport ’Simultaneous Dual-Band 802.11n Wi-Fi 5GHz /2.5GHz’ Network.
Option click on Wireless Menu shows my 5GHz RSSI: -55 dBM Noise: -95 dBM Tx 
Rate: 300 Mbps  MSC Index: 15

• Transmit Rate: This is the max network speed available with the 
current signal strength. The data rate is measured in Mbps.
• MCS Index: Short for Modulation and Coding Scheme, MCS is only 
associated with 802.11n networks.

Hope this makes sense to you and helps to answer your questions some what.

Regards,
Ronni
 
13-inch MacBook Air (April 2014)
1.7GHz Dual-Core Intel Core i7, Turbo Boost to 3.3GHz
8GB 1600MHz LPDDR3 SDRAM
512GB PCIe-based Flash Storage

macOS Sierra 10.12.3

> On 8 Feb 2017, at 3:11 pm, Neil Houghton  wrote:
> 
> Hi all,
> 
> As a result of changing internet plan, I scored a new modem. It creates 2
> wireless networks - one on 2.4GHz and one on 5GHz.
> 
> 
> Both appear to work just fine so I used the option click on the wireless
> menu-bar icon to see what differences were apparent. Report as follows:
> 
> 2.4GHz network:
> RSSI: -68
> Transmit rate: 117
> MCS Index: 14
> 
> 
> 5GHz network:
> RSSI: -70
> Transmit rate: 162
> MCS Index: 12
> 
> 
> I'm not sure what that all means  ;o)
> 
> I understand transmit rate - which would seem to suggest that the 5GHZ at
> 162 is performing slightly better than the 2.4GHz at 117 ??
> 
> 
> Are the other figure significant?
> Are there other factors to consider when choos

Re: Wireless band choice

[Stephen Chape]

Hi Neil,

I stopped using the Apple Time Capsule about 3 years ago when it finally died.
Then started a new contract with Telstra Bigpond who provided me with a Modem 
already set up.
But I have only ever had one WiFi network.


> On 9 Feb 2017, at 11:48 am, Neil Houghton  wrote:
> 
> Hi Stephen,
> 
> Not sure which device you actually used to set-up your wireless – the modem 
> or the Time Capsule – often with this set-up people turn off the wireless on 
> the modem and use the time capsule to set-up the wireless network.
> 
> In my case here, the modem actually sets up two different wireless networks, 
> with slightly different network names, one on the 2.4GHz frequency and one on 
> the 5GHz frequency. The modem makes both networks available but, when you 
> connect your wireless device, you have to choose which network to join.
> 
> The situation you describe sounds different – the equipment setting up one 
> wireless network but utilising whichever frequency it thinks best to 
> transmit/receive network traffic between devices.
> 
> I’m guessing that this is an Apple airport feature and that you had your 
> wireless network set-up by your Time Capsule (or other Apple device like an 
> Airport Extreme)?
> 
> 
> 
> 
> Cheers
> 
> 
> 
> 
> Neil
> -- 
> Neil R. Houghton
> Albany, Western Australia
> Tel: +61 8 9841 6063
> Email: n...@possumology.com
> 
> 
> 
> 
> 
> on 9/2/17 9:59, Stephen Chape at chap...@bigpond.com wrote:
> 
>> Hi guys,
>> I have used a dual band modem for quite some time.
>> And even before that my Apple Time Capsule was dual band.
>> 
>> I was not aware that you can choose which peripherals use which band ?
>> I understood that the equipment made the best choice in real time.
>> 
>>> On 8 Feb 2017, at 9:47 pm, Brian RISBEY  wrote:
>>> 
>>> Hi Neil
>>> That is the extent of my limited understanding, I don't think your modem 
>>> speed is an issue here just the wireless transmission aspect. 
>>> So, as you said, fixed and close 5 and outside 2.4. 
>>> 
>>> Brian Risbey 
>>> 🌊🏊
>>> 
>>> 
>>> On 8 Feb 2017, at 20:24, Neil Houghton  wrote:
>>> 
>>> Hi Brian,
>>> 
>>> 
>>> Thanks for that feedback.
>>> 
>>> So might it be better to connect to the 5GHz network for the computers
>>> (fixed location & better speed) and to connect to the 2.4GHz network for
>>> mobile devices -  phones and iPads - for better roaming round the
>>> house/garden and also to share bandwidth between the 2 networks - or is the
>>> modem speed/bandwidth the limiting factor there  ?
>>> 
>>> 
>>> Cheers
>>> 
>>> 
>>> 
>>> Neil
> 
> 
> -- The WA Macintosh User Group Mailing List --
> Archives - 
> Guidelines - 
> Settings & Unsubscribe - 
> 


Regards,
Stephen Chape






-- The WA Macintosh User Group Mailing List --
Archives - 
Guidelines - 
Settings & Unsubscribe - 

Re: Wireless band choice

[Neil Houghton]

Hi Stephen,

Not sure which device you actually used to set-up your wireless – the modem
or the Time Capsule – often with this set-up people turn off the wireless on
the modem and use the time capsule to set-up the wireless network.

In my case here, the modem actually sets up two different wireless networks,
with slightly different network names, one on the 2.4GHz frequency and one
on the 5GHz frequency. The modem makes both networks available but, when you
connect your wireless device, you have to choose which network to join.

The situation you describe sounds different – the equipment setting up one
wireless network but utilising whichever frequency it thinks best to
transmit/receive network traffic between devices.

I’m guessing that this is an Apple airport feature and that you had your
wireless network set-up by your Time Capsule (or other Apple device like an
Airport Extreme)?




Cheers




Neil
-- 
Neil R. Houghton
Albany, Western Australia
Tel: +61 8 9841 6063
Email: n...@possumology.com





on 9/2/17 9:59, Stephen Chape at chap...@bigpond.com wrote:

> Hi guys,
> I have used a dual band modem for quite some time.
> And even before that my Apple Time Capsule was dual band.
> 
> I was not aware that you can choose which peripherals use which band ?
> I understood that the equipment made the best choice in real time.
> 
>> On 8 Feb 2017, at 9:47 pm, Brian RISBEY  wrote:
>> 
>> Hi Neil
>> That is the extent of my limited understanding, I don't think your modem
>> speed is an issue here just the wireless transmission aspect.
>> So, as you said, fixed and close 5 and outside 2.4.
>> 
>> Brian Risbey 
>> 🌊🏊
>> 
>> 
>> On 8 Feb 2017, at 20:24, Neil Houghton  wrote:
>> 
>> Hi Brian,
>> 
>> 
>> Thanks for that feedback.
>> 
>> So might it be better to connect to the 5GHz network for the computers
>> (fixed location & better speed) and to connect to the 2.4GHz network for
>> mobile devices -  phones and iPads - for better roaming round the
>> house/garden and also to share bandwidth between the 2 networks - or is the
>> modem speed/bandwidth the limiting factor there  ?
>> 
>> 
>> Cheers
>> 
>> 
>> 
>> Neil



-- The WA Macintosh User Group Mailing List --
Archives - 
Guidelines - 
Settings & Unsubscribe - 

Re: Mail problem

[John Thompson]

Thanks Ronni.  I thought I may have to go down that track so will attend to it 
later today, or tomorrow.  Nothing much else to do with this current weather - 
Golf is out.

Regards

John

> On 9 Feb 2017, at 9:09 AM, Ronni Brown  wrote:
> 
> Hi John,
> 
> Would there be any chance you have a corrupted email message that could be 
> stopping Mail App from loading?
> But, if you have the exact same email messages on both your computers - the 
> Mac mini & MacBook Pro and you are NOT experiencing any problem with Mail on 
> the MacBook Pro, I would not think so.
> 
> The only way you can reinstall Mail.app is to Reinstall macOS.
> 
> You can do this without affecting your files and settings.
> But as always I recommend having a current bootable backup and/or Time 
> Machine backup!
> 
> For this to work in macOS Recovery, you must be connected to the Internet. 
> 
> 1. Boot into macOS Recovery Partition 
> 
> Hold down Command-R at startup until the Apple logo appears to see emergency 
> mode.
> macOS Recovery gives you four choices:
> 
> 2. Select “Reinstall macOS”
> 
> Click the Wi-Fi icon at the top right of the screen and choose a network. 
> Enter the network’s password, if necessary.
> Select Reinstall macOS, and then click the Continue button. 
> 
> The Sierra installer data—roughly 5 GB downloads over the Internet from 
> Apple’s servers; once the download is finished, installation proceeds.
> 
> Be prepared for the download to take anywhere from 20 minutes to several 
> hours, depending on your connection; installation will then take another 15 
> to 30 minutes.
> —
> During installation your Mac will restart a few times, sometimes you won’t 
> hear a start up chime the screen will just be black.
> Let the installation process complete - don’t interrupt it!
> --
> After your computer boots back into mac OS Sierra 
> Perform Post-installation Tasks:
> A) Respond to Immediate Questions
> Among the most common questions are requests for your user account password 
> or Apple ID password. For example, certain apps may once again need an 
> administrator’s authorization to make changes to your data, and various apps 
> that use your Apple ID (including iTunes and iBooks) may need you to sign in 
> again.
> 
> Check System Preferences > iCloud to make sure you’re signed in to iCloud 
> (and with the correct Apple ID). Do the same in iTunes (Account > View My 
> Account) and the App Store (Store > View My Account).
> NOTE:  Make sure “iCloud Drive” in NOT activated! (unless you wish to use it; 
> you can set it up at a later date if needed).
> 
> Let us know how you get on please.
> 
> Regards,
> Ronni
> 
> 
>> On 9 Feb 2017, at 7:32 am, John Thompson > > wrote:
>> 
>> Thanks for that Ronni,
>>  In answer to you questions;
>> A)   Updating 10.12 to 10.12.3,
>> 
>> B)   No
>> 
>> C)   Yes, several times.
>> 
>> Have tried the Safe Boot a couple of times without success.
>> 
>> Do not know where I can access a fresh new version of Mail so currently, am 
>> at a loss.
>> 
>> Regards
>> 
>> John
>> 
>> 
>>> On 8 Feb 2017, at 2:00 PM, Ronni Brown >> > wrote:
>>> 
>>> 
 On 8 Feb 2017, at 7:22 am, John Thompson >>> > wrote:
 
 Since upgrading the Os on my 13” Macbook Pro (2012) Mail will not open.  
 It quits within a couple of secondsor less each time I try toopen it.  Is 
 there any way I can re-install Mail for this computer?  Do not have any 
 problemson the older MacMini running OS 10.11.6 and Mail 9.3.
 
 Thanks in anticipation
 
 John Thompson
>>> 
>>> Hi John,
>>> 
>>> A couple of questions first:
>>> A] Is this since upgrading from OS X 10.11.6 to macOS Sierra 10.12? or 
>>> updating macOS Sierra10.12 to 10.12.3?
>>> B] Do you receive any error message as to why Mail quit?
>>> C] Have you tried Restarting your MacBook Pro after Mail Quits, then launch 
>>> Mail right after you restart?
>>> 
>>> I would first suggest you “Try A Safe Boot”
>>> 
>>> To perform a safe boot, follow these steps:
>>> 1. Start or Restart your Mac.
>>> 2. Hold the Shift key immediately when you hear the startup chime, press 
>>> the Shift key and hold it down until the gray Apple logo appears on the 
>>> screen.
>>> 3. Release the key when you see the gray Apple logo
>>> 
>>> Your Mac will complete the startup process, which will take considerably 
>>> longer than usual. 
>>> You’ll eventually see the words “Safe Boot” on the screen—possibly within 
>>> the login window, depending on which version of macOS you’re running.
>>> 
>>> 4. Open Mail.app as soon as startup process completes.
>>> 
>>> If rebooting in safe mode solves the problem, you know that some system 
>>> level process is at fault or that one of the caches disabled by safe mode 
>>> was corrupted. 
>>> 
>>> 5. Restart normally and see if the problem is gone.
>>> 
>>> Regards,
>>> Ronni
>>> 
>>> 13-inch MacBook Air (April 2014)
>>> 1.7GHz 

Re: Wireless band choice

[Stephen Chape]

Hi guys,
I have used a dual band modem for quite some time.
And even before that my Apple Time Capsule was dual band.

I was not aware that you can choose which peripherals use which band ?
I understood that the equipment made the best choice in real time.

> On 8 Feb 2017, at 9:47 pm, Brian RISBEY  wrote:
> 
> Hi Neil
> That is the extent of my limited understanding, I don't think your modem 
> speed is an issue here just the wireless transmission aspect. 
> So, as you said, fixed and close 5 and outside 2.4. 
> 
> Brian Risbey 
> 🌊🏊
> 
> 
> On 8 Feb 2017, at 20:24, Neil Houghton  wrote:
> 
> Hi Brian,
> 
> 
> Thanks for that feedback.
> 
> So might it be better to connect to the 5GHz network for the computers
> (fixed location & better speed) and to connect to the 2.4GHz network for
> mobile devices -  phones and iPads - for better roaming round the
> house/garden and also to share bandwidth between the 2 networks - or is the
> modem speed/bandwidth the limiting factor there  ?
> 
> 
> Cheers
> 
> 
> 
> Neil
> -- 
> Neil R. Houghton
> Albany, Western Australia
> Tel: +61 8 9841 6063
> Email: n...@possumology.com
> 
> 
> 
> 
> 
> 
>> on 8/2/17 16:53, Brian RISBEY at risb...@bigpond.com wrote:
>> 
>> Hi Neil
> It sounds like my work set up.
> 2.4 had better range/ distance but
>> slower connection speed while 5 was a faster connection but with a reduced
>> range. So a compromise distance or speed.
> 
> Brian Risbey 
> 🌊🏊
> 
> 
> On 8 Feb 2017,
>> at 15:11, Neil Houghton  wrote:
> 
> Hi all,
> 
> As a result of
>> changing internet plan, I scored a new modem. It creates 2
> wireless networks -
>> one on 2.4GHz and one on 5GHz.
> 
> 
> Both appear to work just fine so I used the
>> option click on the wireless
> menu-bar icon to see what differences were
>> apparent. Report as follows:
> 
> 2.4GHz network:
> RSSI: -68
> Transmit rate: 117
> MCS
>> Index: 14
> 
> 
> 5GHz network:
> RSSI: -70
> Transmit rate: 162
> MCS Index: 12
> 
> 
> I'm not
>> sure what that all means  ;o)
> 
> I understand transmit rate - which would seem
>> to suggest that the 5GHZ at
> 162 is performing slightly better than the 2.4GHz
>> at 117 ??
> 
> 
> Are the other figure significant?
> Are there other factors to
>> consider when choosing which network to use?
> 
> 
> 
> TIA
> 
> 
> 
> Cheers
> 
> 
> 
> Neil
> -- 
> Neil
>> R. Houghton
> Albany, Western Australia
> Tel: +61 8 9841 6063
> Email:
>> n...@possumology.com
> 
> 
> -- The WA Macintosh User Group Mailing List --
> Archives
>> - 
> Guidelines -
>> 
> Settings & Unsubscribe
>> - 
> 
> -- The WA Macintosh
>> User Group Mailing List --
> Archives -
>> 
> Guidelines -
>> 
> Settings & Unsubscribe
>> - 
> 
> 
> 
> -- The WA Macintosh User Group Mailing List --
> Archives - 
> Guidelines - 
> Settings & Unsubscribe - 
> 
> -- The WA Macintosh User Group Mailing List --
> Archives - 
> Guidelines - 
> Settings & Unsubscribe - 
> 


Regards,
Stephen Chape






-- The WA Macintosh User Group Mailing List --
Archives - 
Guidelines - 
Settings & Unsubscribe - 

Re: Mail problem

[Ronni Brown]

Hi John,

Would there be any chance you have a corrupted email message that could be 
stopping Mail App from loading?
But, if you have the exact same email messages on both your computers - the Mac 
mini & MacBook Pro and you are NOT experiencing any problem with Mail on the 
MacBook Pro, I would not think so.

The only way you can reinstall Mail.app is to Reinstall macOS.

You can do this without affecting your files and settings.
But as always I recommend having a current bootable backup and/or Time Machine 
backup!

For this to work in macOS Recovery, you must be connected to the Internet. 

1. Boot into macOS Recovery Partition 

Hold down Command-R at startup until the Apple logo appears to see emergency 
mode.
macOS Recovery gives you four choices:

2. Select “Reinstall macOS”

Click the Wi-Fi icon at the top right of the screen and choose a network. 
Enter the network’s password, if necessary.
Select Reinstall macOS, and then click the Continue button. 

The Sierra installer data—roughly 5 GB downloads over the Internet from Apple’s 
servers; once the download is finished, installation proceeds.

Be prepared for the download to take anywhere from 20 minutes to several hours, 
depending on your connection; installation will then take another 15 to 30 
minutes.
—
During installation your Mac will restart a few times, sometimes you won’t hear 
a start up chime the screen will just be black.
Let the installation process complete - don’t interrupt it!
--
After your computer boots back into mac OS Sierra 
Perform Post-installation Tasks:
A) Respond to Immediate Questions
Among the most common questions are requests for your user account password or 
Apple ID password. For example, certain apps may once again need an 
administrator’s authorization to make changes to your data, and various apps 
that use your Apple ID (including iTunes and iBooks) may need you to sign in 
again.

Check System Preferences > iCloud to make sure you’re signed in to iCloud (and 
with the correct Apple ID). Do the same in iTunes (Account > View My Account) 
and the App Store (Store > View My Account).
NOTE:  Make sure “iCloud Drive” in NOT activated! (unless you wish to use it; 
you can set it up at a later date if needed).

Let us know how you get on please.

Regards,
Ronni


> On 9 Feb 2017, at 7:32 am, John Thompson  wrote:
> 
> Thanks for that Ronni,
>   In answer to you questions;
> A)Updating 10.12 to 10.12.3,
> 
> B)No
> 
> C)Yes, several times.
> 
> Have tried the Safe Boot a couple of times without success.
> 
> Do not know where I can access a fresh new version of Mail so currently, am 
> at a loss.
> 
> Regards
> 
> John
> 
> 
>> On 8 Feb 2017, at 2:00 PM, Ronni Brown > > wrote:
>> 
>> 
>>> On 8 Feb 2017, at 7:22 am, John Thompson >> > wrote:
>>> 
>>> Since upgrading the Os on my 13” Macbook Pro (2012) Mail will not open.  It 
>>> quits within a couple of secondsor less each time I try toopen it.  Is 
>>> there any way I can re-install Mail for this computer?  Do not have any 
>>> problemson the older MacMini running OS 10.11.6 and Mail 9.3.
>>> 
>>> Thanks in anticipation
>>> 
>>> John Thompson
>> 
>> Hi John,
>> 
>> A couple of questions first:
>> A] Is this since upgrading from OS X 10.11.6 to macOS Sierra 10.12? or 
>> updating macOS Sierra10.12 to 10.12.3?
>> B] Do you receive any error message as to why Mail quit?
>> C] Have you tried Restarting your MacBook Pro after Mail Quits, then launch 
>> Mail right after you restart?
>> 
>> I would first suggest you “Try A Safe Boot”
>> 
>> To perform a safe boot, follow these steps:
>> 1. Start or Restart your Mac.
>> 2. Hold the Shift key immediately when you hear the startup chime, press the 
>> Shift key and hold it down until the gray Apple logo appears on the screen.
>> 3. Release the key when you see the gray Apple logo
>> 
>> Your Mac will complete the startup process, which will take considerably 
>> longer than usual. 
>> You’ll eventually see the words “Safe Boot” on the screen—possibly within 
>> the login window, depending on which version of macOS you’re running.
>> 
>> 4. Open Mail.app as soon as startup process completes.
>> 
>> If rebooting in safe mode solves the problem, you know that some system 
>> level process is at fault or that one of the caches disabled by safe mode 
>> was corrupted. 
>> 
>> 5. Restart normally and see if the problem is gone.
>> 
>> Regards,
>> Ronni
>> 
>> 13-inch MacBook Air (April 2014)
>> 1.7GHz Dual-Core Intel Core i7, Turbo Boost to 3.3GHz
>> 8GB 1600MHz LPDDR3 SDRAM
>> 512GB PCIe-based Flash Storage
>> 
>> macOS Sierra 10.12.3
>> 

-- The WA Macintosh User Group Mailing List --
Archives - 
Guidelines - 
Settings & Unsubscribe - 

Re: Mail problem

[John Thompson]

Thanks for that Ronni,
In answer to you questions;
A)  Updating 10.12 to 10.12.3,

B)  No

C)  Yes, several times.

Have tried the Safe Boot a couple of times without success.

Do not know where I can access a fresh new version of Mail so currently, am at 
a loss.

Regards

John


> On 8 Feb 2017, at 2:00 PM, Ronni Brown  wrote:
> 
> 
>> On 8 Feb 2017, at 7:22 am, John Thompson > > wrote:
>> 
>> Since upgrading the Os on my 13” Macbook Pro (2012) Mail will not open.  It 
>> quits within a couple of secondsor less each time I try toopen it.  Is there 
>> any way I can re-install Mail for this computer?  Do not have any problemson 
>> the older MacMini running OS 10.11.6 and Mail 9.3.
>> 
>> Thanks in anticipation
>> 
>> John Thompson
> 
> Hi John,
> 
> A couple of questions first:
> A] Is this since upgrading from OS X 10.11.6 to macOS Sierra 10.12? or 
> updating macOS Sierra10.12 to 10.12.3?
> B] Do you receive any error message as to why Mail quit?
> C] Have you tried Restarting your MacBook Pro after Mail Quits, then launch 
> Mail right after you restart?
> 
> I would first suggest you “Try A Safe Boot”
> 
> To perform a safe boot, follow these steps:
> 1. Start or Restart your Mac.
> 2. Hold the Shift key immediately when you hear the startup chime, press the 
> Shift key and hold it down until the gray Apple logo appears on the screen.
> 3. Release the key when you see the gray Apple logo
> 
> Your Mac will complete the startup process, which will take considerably 
> longer than usual. 
> You’ll eventually see the words “Safe Boot” on the screen—possibly within the 
> login window, depending on which version of macOS you’re running.
> 
> 4. Open Mail.app as soon as startup process completes.
> 
> If rebooting in safe mode solves the problem, you know that some system level 
> process is at fault or that one of the caches disabled by safe mode was 
> corrupted. 
> 
> 5. Restart normally and see if the problem is gone.
> 
> Regards,
> Ronni
> 
> 13-inch MacBook Air (April 2014)
> 1.7GHz Dual-Core Intel Core i7, Turbo Boost to 3.3GHz
> 8GB 1600MHz LPDDR3 SDRAM
> 512GB PCIe-based Flash Storage
> 
> macOS Sierra 10.12.3
> 
> -- The WA Macintosh User Group Mailing List --
> Archives - 
> Guidelines - 
> Settings & Unsubscribe - 
> 

-- The WA Macintosh User Group Mailing List --
Archives - 
Guidelines - 
Settings & Unsubscribe - 

Re: Wireless band choice

[Brian RISBEY]

Hi Neil
That is the extent of my limited understanding, I don't think your modem speed 
is an issue here just the wireless transmission aspect. 
So, as you said, fixed and close 5 and outside 2.4. 

Brian Risbey 
🌊🏊


On 8 Feb 2017, at 20:24, Neil Houghton  wrote:

Hi Brian,


Thanks for that feedback.

So might it be better to connect to the 5GHz network for the computers
(fixed location & better speed) and to connect to the 2.4GHz network for
mobile devices -  phones and iPads - for better roaming round the
house/garden and also to share bandwidth between the 2 networks - or is the
modem speed/bandwidth the limiting factor there  ?


Cheers



Neil
-- 
Neil R. Houghton
Albany, Western Australia
Tel: +61 8 9841 6063
Email: n...@possumology.com






> on 8/2/17 16:53, Brian RISBEY at risb...@bigpond.com wrote:
> 
> Hi Neil
It sounds like my work set up.
2.4 had better range/ distance but
> slower connection speed while 5 was a faster connection but with a reduced
> range. So a compromise distance or speed.

Brian Risbey 
🌊🏊


On 8 Feb 2017,
> at 15:11, Neil Houghton  wrote:

Hi all,

As a result of
> changing internet plan, I scored a new modem. It creates 2
wireless networks -
> one on 2.4GHz and one on 5GHz.


Both appear to work just fine so I used the
> option click on the wireless
menu-bar icon to see what differences were
> apparent. Report as follows:

2.4GHz network:
RSSI: -68
Transmit rate: 117
MCS
> Index: 14


5GHz network:
RSSI: -70
Transmit rate: 162
MCS Index: 12


I'm not
> sure what that all means  ;o)

I understand transmit rate - which would seem
> to suggest that the 5GHZ at
162 is performing slightly better than the 2.4GHz
> at 117 ??


Are the other figure significant?
Are there other factors to
> consider when choosing which network to use?



TIA



Cheers



Neil
-- 
Neil
> R. Houghton
Albany, Western Australia
Tel: +61 8 9841 6063
Email:
> n...@possumology.com


-- The WA Macintosh User Group Mailing List --
Archives
> - 
Guidelines -
> 
Settings & Unsubscribe
> - 

-- The WA Macintosh
> User Group Mailing List --
Archives -
> 
Guidelines -
> 
Settings & Unsubscribe
> - 



-- The WA Macintosh User Group Mailing List --
Archives - 
Guidelines - 
Settings & Unsubscribe - 
-- The WA Macintosh User Group Mailing List --
Archives - 
Guidelines - 
Settings & Unsubscribe - 

Re: Wireless band choice

[Neil Houghton]

Hi Brian,


Thanks for that feedback.

So might it be better to connect to the 5GHz network for the computers
(fixed location & better speed) and to connect to the 2.4GHz network for
mobile devices -  phones and iPads - for better roaming round the
house/garden and also to share bandwidth between the 2 networks - or is the
modem speed/bandwidth the limiting factor there  ?


Cheers



Neil
-- 
Neil R. Houghton
Albany, Western Australia
Tel: +61 8 9841 6063
Email: n...@possumology.com






on 8/2/17 16:53, Brian RISBEY at risb...@bigpond.com wrote:

> Hi Neil
It sounds like my work set up.
2.4 had better range/ distance but
> slower connection speed while 5 was a faster connection but with a reduced
> range. So a compromise distance or speed.

Brian Risbey 
🌊🏊


On 8 Feb 2017,
> at 15:11, Neil Houghton  wrote:

Hi all,

As a result of
> changing internet plan, I scored a new modem. It creates 2
wireless networks -
> one on 2.4GHz and one on 5GHz.


Both appear to work just fine so I used the
> option click on the wireless
menu-bar icon to see what differences were
> apparent. Report as follows:

2.4GHz network:
RSSI: -68
Transmit rate: 117
MCS
> Index: 14


5GHz network:
RSSI: -70
Transmit rate: 162
MCS Index: 12


I'm not
> sure what that all means  ;o)

I understand transmit rate - which would seem
> to suggest that the 5GHZ at
162 is performing slightly better than the 2.4GHz
> at 117 ??


Are the other figure significant?
Are there other factors to
> consider when choosing which network to use?



TIA



Cheers



Neil
-- 
Neil
> R. Houghton
Albany, Western Australia
Tel: +61 8 9841 6063
Email:
> n...@possumology.com


-- The WA Macintosh User Group Mailing List --
Archives
> - 
Guidelines -
> 
Settings & Unsubscribe
> - 

-- The WA Macintosh
> User Group Mailing List --
Archives -
> 
Guidelines -
> 
Settings & Unsubscribe
> - 



-- The WA Macintosh User Group Mailing List --
Archives - 
Guidelines - 
Settings & Unsubscribe - 

Re: Wireless band choice

[Brian RISBEY]

Hi Neil
It sounds like my work set up.
2.4 had better range/ distance but slower connection speed while 5 was a faster 
connection but with a reduced range. So a compromise distance or speed.

Brian Risbey 
🌊🏊


On 8 Feb 2017, at 15:11, Neil Houghton  wrote:

Hi all,

As a result of changing internet plan, I scored a new modem. It creates 2
wireless networks - one on 2.4GHz and one on 5GHz.


Both appear to work just fine so I used the option click on the wireless
menu-bar icon to see what differences were apparent. Report as follows:

2.4GHz network:
RSSI: -68
Transmit rate: 117
MCS Index: 14


5GHz network:
RSSI: -70
Transmit rate: 162
MCS Index: 12


I'm not sure what that all means  ;o)

I understand transmit rate - which would seem to suggest that the 5GHZ at
162 is performing slightly better than the 2.4GHz at 117 ??


Are the other figure significant?
Are there other factors to consider when choosing which network to use?



TIA



Cheers



Neil
-- 
Neil R. Houghton
Albany, Western Australia
Tel: +61 8 9841 6063
Email: n...@possumology.com


-- The WA Macintosh User Group Mailing List --
Archives - 
Guidelines - 
Settings & Unsubscribe - 

-- The WA Macintosh User Group Mailing List --
Archives - 
Guidelines - 
Settings & Unsubscribe -