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Graham Sexton
United Kingdom
Приєднався 26 гру 2007
Link budget calculation
An open ended tutorial on link budget calculations for an external Wi-Fi Link
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Відео
Shannon's law
Переглядів 2 тис.4 роки тому
An exam revision tutorial illustrating how Shannon's law can be used to calculate channel capacity.
Hardware config for Wi-Fi throughput experiment
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Hardware config for Wi-Fi throughput experiment
Building a throughput model
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A support video for the Wi-Fi throughput assignment. Students: Remember this is a general guide and not your solution. You will need to check detail, add and remove aspects needed/ not needed for your actual work
Dometic oven failure 2
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Oven burning without base plate. Shows that the flame failure is dependent on whether the oven door is open or shut.
Balco 3D printer Y axis shudder 1
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Shows Y axis table shudder at 28 secs and 2mins. Happens during fast movement of table. Difficult to actually see the shudder in the video, but can be heard. The shudder can be felt on the table it sits on too.
Can u send me code for this pls
Thank you so much. I'm learning wireless networking in my second language and it parts it can be quite difficult. Your video is very clear and easy to understand. You made my life a little bit easier today. Thanks again.
hi. can you put the links for components, etc., from your ppt in the notes section? thanks.
Not quite sure what you mean. The components are generic rather than being manufacturer specific. Thanks Graham
hi i was wondering if you have to get shot in the beginning or is it a necessity
Not too sure about this -you cant mix dbm with db i thought?
hi, there is no problem using dBm's and dB's in the same model - well as long as you are careful. remember that a dbm is simply a db value relative to 1mw of power. so you can 'modify' this dbm value using db values. for example ifyou have a 1mw signal and amplify it by 10× you get a 10mw signal. doing this in the db world you start with a 0dbm value (1mw) and add 10dbs to this (equiv to 10x gain) you the get 10dbm's. 10dbms is 10mw. hope this helps
@@grahamsexton1 cheers Graham I shall practice some more exercises - I get it ....then I don't - but I find it well worth the effort. What a fascinating subject this is ..
@@eamonncolley5249 glad you are enjoying it Eamonn !
cool vid
My favourite teacher 2008-2009
Should the Payload time in column C be = column A*8/column B (because column A is in Bytes)?
I believe so. I have followed this walkthrough but have somehow ended up with a straight line and no curve :(
Thanks dude!
Isn't fesnel zone the region between near field and farfield? That means depending on frequency for outdoor LoS links will be few meters or less.
Hi Joes - thanks for taking an interest in the video. I think you will fine that the 'fresnel region' is different to the 'fresnel zone' mentioned here in the video. I think you actually mean the 'fresnel region' in your message and you are quite right about what that.
I have the exact same noise on my Balco. But since yesterday I have pillowing on my top layers. Think one is related to the other. Any suggestions?
Hmmm, is the fan running at a reasonable speed. If you loose cooling the printer performance may change. I have recently experienced some poor printing after moving the printer into a cooler area of my house. I've moved the printer back to the living area and it is ok now. Also I have noticed performance does vary with pla types. Hope this helps.
Hi very nice video thankyou. could you please explain some other tool like iperf
Is Lora protocol or modulation?
Lora is the hardware implementation. It defines the pattern of the electromagnetic signals, not the messaging protocol. So I think it is what you called "modulation"
Hi great video Can you please let me know if I can measure the data rate and store this information in any file.