'You are such a great cheat'. 🤣. Anyways, thanks for the trick. Works like magic.
@KK-rg3nj5 ай бұрын
Thanks for this video! Pretty systematic way of doing this mentally. We can also modify this to the voltage log/dB expression of YdB = 20log(x) by changing the values in the dB column to 2x ie, 20 dB => 10 and 6dB => 2. So for example: 60dB would become: 20+20+20 = 10^3 = 1000 times And 26dB would be: 20+6 = 10*2 = 20 times Appreciate your effort to simplify this!
@Kof_Believer5 ай бұрын
I just subscribed. Thanks
@jspaceboy11173 жыл бұрын
How would you go from normal to db? For example 500 Watts? I think I figured it out but want to make sure (10*10*5 --> 10+10+7 = 27)
@WirelessLANProfessionals3 жыл бұрын
Thanks for your insight! We'll just have to reverse the conversion. In this case, 500 mW would be: [(10x10x10)/2] ---> [(10+10+10)-3 = 27] Remember that there are only 3s and 2s, no 5s. 🙂
@victornjoroge5624 жыл бұрын
Magical! Great video..Thanks Keith for sharing this
@billaday8589Ай бұрын
Agree!
@isolinear9836 Жыл бұрын
Thanks a lot Sir. This will be really useful as a template for me to teach other people. A shame nobody taught me this method decades ago. I've been doing it the "way you're supposed to" mentally (with my personal shortcuts developed over the decades, so there's no point in me using your methodical shortcuts now), but it would have been easier on me if I'd been taught this from the beginning. I remember struggling to do the math in my head when I was a kid. Ah well, at least I get to use this method in teaching others which seems a LOT easier to articulate and demonstrate.
@kasiviswanathan95054 жыл бұрын
Best video .. perfect .. thanks
@WirelessLANProfessionals4 жыл бұрын
Thanks Kasi!
@billaday8589Ай бұрын
@@WirelessLANProfessionals for you also!
@onlyonetony Жыл бұрын
YES!
@joelourenco46214 жыл бұрын
Thank you so much!! I appreciate this.
@k9handler95 Жыл бұрын
D: Dragon B: Ball Math
@theofanisc.karagiorgos9520 Жыл бұрын
what about dBm =-110 i.e? should add the "-" after the calculation? or start with 1/10*10*10*10*10*10*10*10*10*10*10?
@qzorn44403 жыл бұрын
very nice for an esp32 arduino wifi project... now to remember this great info 6 months from now and longer... 👍👍 thanks a lot...😉
@WirelessLANProfessionals2 жыл бұрын
Glad it helped. Thank you for watching!
@akshaychavan93084 жыл бұрын
Great video...now its far more clear
@WirelessLANProfessionals4 жыл бұрын
Thanks again Akshay
@Dylan-ni1tc Жыл бұрын
Hello, I have a question. I learned an equation which simplifies converting dB to dBm (by using this following eq, dBm = dB + 30) at college in my freshmen year. But now, fast forward almost 4 years later, I found that this method is highly debateable amongst telecom engineer. And right now, i'm in a desperate situation about this converting dBs stuff. I need to finish an eq which involves dBm and dB. My eq problem is Rx (dBm) = Tx (dBm) - Pathloss (dB), I have the data for Rx and Tx in dBm, but I need to know whats maximum distance in the PL equation (Cost231-Hata model). Is it allowed to use this methods? If not, how can I find the maximum distance? Thank you.
@MrGeronimo2 жыл бұрын
Prof. -48dbm is it good or not good for 100Mbps internet fiber optique 😂 or shouldn’t be like that 🙃
@wongalex94572 жыл бұрын
Thank you, I struggle for so long of this
@mahendrachavan1831 Жыл бұрын
No idea why it took so long to get this video, Sir...Thank you a Billon Tons!!!! 😀
@piotrstukin9274 Жыл бұрын
Why there is a 1* in the formula?
@phillipkluttz65534 жыл бұрын
Keith, The link to the resources returns "No results found".
@WirelessLANProfessionals4 жыл бұрын
Phillip, my apologies - let me see what if I can get that fixed.
@WirelessLANProfessionals4 жыл бұрын
Phillip, the resources links were there - at the bottom of the page - I reorganized the page so the resources are easily and accessible up top. Sorry for the confusion there :) Let us know I you have any other issues.
@phillipkluttz65534 жыл бұрын
@@WirelessLANProfessionals Thank you! The page loads now.
@dinyarbuhariwalla11202 жыл бұрын
Hello Sir, how will you convert a decimal mw to dbm? for eg if i want to convert from 25 milli watt to dbm?
@holmiumh Жыл бұрын
Well, you can always use a calculator, but if you want to do an approximation without tool then here's one way to do it, let's say you want to convert 25 mW to dBm? 1, You know by heart that 20dBm = 100mW (if you don't know why, review definition of dBm and dB) 2, You know by heart that -6 dB = -3 -3 dB ≈ 0.5 x 0.5 = 0.25 (if you don't know why, review the approximated usage of ±3dB) 3, 25mW = 100mW x 0.25 ≈ (20 - 6) dBm = 14dBm