Good video, but you mostly left out the topics of selectivity and efficiency. If I didn't know anything about this topic I might come away from this video thinking I should always go for the low Q option. It would be good to give viewers the other side of the trade off conversation.
@TheSmokinApe3 жыл бұрын
That's a far point Ryan, thanks for calling it out. When I have been doing these "What the heck" videos it's really targeted towards newer hams who generally are more concerned about SWR and ATUs. My goal has always been to progressively increase topic complexity with each video and refer back to earlier content if / when necessary, I'm sure you saw that in this video. I'll pin this comment to the top so folks have an opportunity to see it and ask questions.
@sebastianjamison62993 жыл бұрын
I know Im kinda randomly asking but does anybody know a good site to stream newly released series online ?
@watthairston148322 күн бұрын
Many decades ago, former coworker was pondering the resonant frequency and "Q" of a pair of those cheap aluminum frame chez lounge chairs that had the plastic supports fabric strips configured as a dipole. Well, the Fr landed dead center of 6-meters with very low "Q" allowing use of entire band. I don't think he ever had a QSO on it. 6m was dead at that time. This video caused me to remember that. Thanks!😂
@TheSmokinApe22 күн бұрын
@@watthairston1483 that’s a great story 👍
@acestudioscouk-Ace-G0ACE18 күн бұрын
Q is a difficult concept for many hams, including me and this is a good and practical explanation of the topic. Thank-you.
@TheSmokinApe18 күн бұрын
Thanks Ace, glad you liked it bro 👍
@warrenpercell2973 жыл бұрын
And here I thought High Q meant high quality (re: signal). Thanks for clarifying that for me (us), Ape.
@TheSmokinApe3 жыл бұрын
No problem, thanks for watching Warren 👍
@TheNoCodeTech3 жыл бұрын
Great video man. You did a fantastic job explaining this. Thank you. MNHR Team replay for the win!
@TheSmokinApe3 жыл бұрын
Thanks NoCode, glad you liked it 👍
@charlesdup680310 ай бұрын
excellent video for a newby! I heard all these terms and had them explained in my study class but never really understood until now. Thanks
@TheSmokinApe10 ай бұрын
Glad it was helpful Charles, thanks for watching 👍
@N82SV Жыл бұрын
This is the best description I've ever heard on this subject. Just the right level of detail. Thanks!
@TheSmokinApe Жыл бұрын
Thanks Kenneth, glad it was helpful 👍
@jefflalmond21333 жыл бұрын
Another great video Ape. They may as well take away your thumbs down button, and replace it with two thumbs up buttons.
@TheSmokinApe3 жыл бұрын
Haha, thanks Jeff, glad you liked the video!
@charleszimmermann77843 жыл бұрын
Boy will they correct you, even if they are wrong they will correct you. Thanks for the video.
@TheSmokinApe3 жыл бұрын
Thanks for watching Charles 👍
@troy34567892 жыл бұрын
You explained it nicely. I read about Q and was left scratching my head. Thank you
@TheSmokinApe2 жыл бұрын
Awesome Robert, glad it helped.
@troy34567892 жыл бұрын
@@TheSmokinApe I take my extra test this weekend, and I have zero frame of reference for many of the concepts I'm studying. So many of the youtube hams assume their audience is composed of seasoned experts, so I am thankful.
@troy34567892 жыл бұрын
@@TheSmokinApe I am looking for something clear and concise on "feed point impedance", since that topic comes up often enough too. There's really nothing on it out there.
@TheSmokinApe2 жыл бұрын
This might help, it’s geared towards dipoles which all antennas are based off of: kzbin.info/www/bejne/ZoeZi5qooNiZbM0
@Proc30003 жыл бұрын
Now I know that "high Q" just means low bandwith. I never knew what people meant by this because they just say "high Q" like Im supposed to know what that means. Thanks Ape
@TheSmokinApe3 жыл бұрын
Glad you liked the video, thanks for watching Robert 👍
@raymondmartin67373 жыл бұрын
Thanks for clarifying "Q" as to what it means. I have over the years of adding a capacitance hat 👒 to a mobile antenna to improve the Q on that antenna, such a 40 or 80 meter mobile antenna. Ray, W2CH
@TheSmokinApe3 жыл бұрын
Thanks for watching Ray 👍
@billcrow54033 жыл бұрын
Awesome! Keep these coming!
@TheSmokinApe3 жыл бұрын
That's the plan, thanks for watching Bill!
@K5YVY3 жыл бұрын
Another great video Ape. Know I have a pretty good understanding of antenna Q 👍
@TheSmokinApe3 жыл бұрын
Thanks Joe Brett, glad you liked it 👍
@rbrazil10003 жыл бұрын
OMG I hit the like button and I've never been happier!
@TheSmokinApe3 жыл бұрын
Haha, thank you 👍
@neubert5003 жыл бұрын
Fantastic simplification of stuff I never understood, to knowledge that makes logical sense to me. Excellent job Sir!
@TheSmokinApe3 жыл бұрын
Awesome, glad you liked it 👍
@BargainBasementHamRadio3 жыл бұрын
Ohhhhhhhhh! "High Q".....i came here for the poetry.......Haiku. Good stuff Ape! "Hams build antennas, throwing them into tall trees, You are 5-9 here."..lol
@TheSmokinApe3 жыл бұрын
Lol, thanks for checking in Ron 👍
@willgilliam90533 жыл бұрын
Being a primary digital operator, i sit on a single ssb frequency all night sometimes. Using a Magnetic loop antenna is a minor issue. The problem is when the antenna cools and physically and electrically shortens at the same time. best to let them sit outside for awhile if moving from one extreme temp to another.
@TheSmokinApe3 жыл бұрын
That's a fair point, I must have ADHD because I'm always jumping around like a mad man. Thanks for watching Will!
@BusDriverRFI28 күн бұрын
Full wave loops are ~200 ohm at the radiation resistance. These are low Q antennas. EFHW is high impedance on the end, but if you analyze the impedance across the hw stretch, the impedance is around 72 ohms in the middle. Now that's a lower Q antenna. The mag loop and the loaded WRCoil vertical are "short" antennas. The radiation resistance on those is very low. Low resistance basically means high Q. Q is XL/R. So we can see easily here that if we use lossy ugly baluns or lossy 1:1 baluns, our lossy R increases and we create a lower Q antenna. ABC. Always Be Chokin' so we can lower our Q and create a more lossy antenna that is lower in Q. Yay loss.
@TheSmokinApe28 күн бұрын
Jerry, you are slipping son… you forgot lossy coils!
@Beowulfsurvival3 жыл бұрын
Great explanation Ape N5PRK
@TheSmokinApe3 жыл бұрын
Thanks Jim 👍
@soctnights3 жыл бұрын
There are a number of questions in the Extra Class pool concerning high/low Q and SWR bandwidth. Not explained very well in the study guide in my opinion. Your video is easier to understand. Definitely had to break open the ARRL Handbook and Antenna manual for this topic. 73, W1RKB
@TheSmokinApe3 жыл бұрын
Thanks man, glad you liked it 👍
@SmokeSignalsRF3 жыл бұрын
Nice explanations - Thank you
@TheSmokinApe3 жыл бұрын
Thanks Don 👍
@DirtyPlumbus Жыл бұрын
Great video. I was unsure of my understanding of Q. It seems I wasn't far off.
@TheSmokinApe Жыл бұрын
Glad you enjoyed it!
@johnwest7993 Жыл бұрын
A high Q antenna is a real selling point when you are in a noisy environment, because it doesn't well receive off-frequency signals or noise. Also, the higher the Q of an antenna the more efficient it is as a radiator. Those are often very important antenna parameters. So any antenna should be designed with that info in mind for whatever your application. It's all about trade-offs, and you can't make the choices you need to make with only half of the information. The 'best' antenna, as far as I'm concerned is one with a very high Q and a really good autotuner that also auto-tracks receive tuning. I don't know of any for sale commercially, but thanks to modern micro-controllers and stepper motors I think I may be able to design one.
@TheSmokinApe Жыл бұрын
I agree with your point about noisy environments. Thanks for watching and for the comment John.
@kiweekeith Жыл бұрын
What a Brilliant vidclip .... Yet Again !!!!! ..... So wished that you 'Lived around the Corner' as you have this Very Rare Talent where one can explain a Complex Subject Simply sothat All can understand it ..... !!!!! IF you were closer I would be knocking on your door Every Day .... :-) :-) :-) Lucky for you .... I am in Christchurch, New Zealand .... I am going to email you with a 'Copy n Paste' of a post that I put up on a Few Sites .... :-) :-) :-) Best to You and Yours and Thanks again for All your Wonderful and Super Informative vidclip .... Cheers from ChCh, NZ .... Keith ZL3KEI
@TheSmokinApe Жыл бұрын
Lol, thanks Keith. Glad you liked the video 👍
@HAMRADIODUDE3 жыл бұрын
Nice job!
@TheSmokinApe3 жыл бұрын
Thanks Dude 👍
@jiml403 жыл бұрын
Something that I didn’t see is that a High Q antenna is more efficient, better signal. Also I believe that the statement that larger gauge wire will have a lower Q than a thinner wire to be wrong/confusing. Larger wire or element or coil is more efficient and a higher Q. Higher Q antennas have a narrower bandwidth.
@TheSmokinApe3 жыл бұрын
I think the word efficient can be used to mean two things here; 1. an antennas ability to be used across a larger area of bandwidth 2. the energy required to use the antenna. What you are saying about energy is correct. It is my understanding that element diameter does play a role, here is an article I found today that may help: www.antentop.org/w4rnl.001/bw.html
@rttakezo20003 жыл бұрын
@@TheSmokinApe Perhaps a "201" someday could be about how antenna resonance and SWR are two completely different things. Many a new ham sees them as synonymous. This indirectly causes much confusion to things like Q.
@TheSmokinApe3 жыл бұрын
I've discussed it briefly in some of the live streams, it's on the list for a future video. Thanks for the suggestion and for watching 👍
@jiml402 жыл бұрын
@@TheSmokinApe efficient in this case is the amount of signal that actually radiated from the antenna. Non efficient antenna will absorb and dissipate a lot of the signal in the form of heat
@jeremycole30085 ай бұрын
the higher the Q, the better tuning fork you have. If your tuning fork produces a tone for quite a while, you have an awesome one. if you have a crappy one, the tone dampens out quickly, and probably took more effort striking it on something to get it to ring. A low q one isnt even worth playing with, cause you wont hear anything. I suppose a bell analogy would work here too. An impedance mismatch is how well, how hard, how delicate you have to strike the thing to make it ring. I suppose a low q unit would be a loudspeaker, since its frequency range is so large its whatever signal you send to it
@TheSmokinApe5 ай бұрын
Hey Jeremy, I like the analogy. IMO which might not be worth anything, it really depends on the operator and what they are trying to accomplish. THanks for the comment!
@wild-radio73733 жыл бұрын
Thank you, Sir!♡♡♡ I really appreciate your videos :) 🤜🏻👍🤛🏻
@wild-radio73733 жыл бұрын
Oh my goodness! At three minutes, when you say maths proper! Haha, let me tell you how happy that made me! Hecka! That's how much! Haha♡ you are awesome
@TheSmokinApe3 жыл бұрын
Thanks Aname, I appreciate you watching!
@MartinJDavidson3 жыл бұрын
Well said.
@TheSmokinApe3 жыл бұрын
Thanks Martin 👍
@KM4ACK3 жыл бұрын
Great explanation as always! Oh, and I clicked the things to make me happy but didn’t sense the same endorphin rush as normal. What gives?
@TheSmokinApe3 жыл бұрын
Lol, thanks for watching Jason 👍
@Roddy19653 жыл бұрын
Q = f_resonant / Bandwidth_of_resonance. Where is the bandwidth measured? In normal resonant systems the width at half the maximum or peak value of the power delivery. Or the -3dB power points. But I haven't thought of it terms of the antenna curves. But it doesn't really matter, it's a qualitative measure. High Q systems are more selective around the resonant frequency (lasers are super high Q systems, for example).
@TheSmokinApe3 жыл бұрын
That's pretty much what I showed. Bandwidth of Resonance is the bandwidth below what you determine as "acceptable". in the video I picked 2:1 for simplicity. Thanks for the comment!
@tonyturtle58053 жыл бұрын
thanks for video !!!!
@TheSmokinApe3 жыл бұрын
You're welcome, thanks for watching Tony 👍
@rttakezo20003 жыл бұрын
....if I remember my physics correctly, yes, everything you say is true....but only with regards to Q effect on SWR. Q is primarily a ratio of energy stored vs energy lost per cycle. That is to say, something that is high Q requires less energy to maintain resonance compared to something that is low Q. Life (and physics) is a compromise. High Q is good...for energy/resonance; however, has a detrimental effect on bandwidth (which can be important for us radio operators).
@TheSmokinApe3 жыл бұрын
Correct and a fair point, I do these videos to help new hams as they enter into the hobby. I did, purposefully, limit the conversation to SWR. Thanks for calling it out and for watching.
@paulhastings31093 жыл бұрын
Ape tnxs Q makes it clear 73
@TheSmokinApe3 жыл бұрын
Thanks Paul, glad you liked it!
@mikebavoso265 ай бұрын
Very smart man. Could you please povide a little more volume. I have my volume control all the way to the right. You are still hard to hear. Thanks
@TheSmokinApe5 ай бұрын
Thanks for the feedback on the volume 👍
@saldomino16393 жыл бұрын
Great Video well explained enjoy your videos always ape ! Sal KM4PPV !
@TheSmokinApe3 жыл бұрын
Thanks Sal 👍
@Sizzlik Жыл бұрын
When using SDR software with a dongle you got to switch to the Q branch in dieect sampling to go into the HF region..is that the same Q? There is also an "I" branch..whats that for? The opposite to be used in the Ghz range?
@TheSmokinApe Жыл бұрын
Q branch is a type of sampling used in SDR, its stands for Quadrature. Totally different...
@hamradiotube3 жыл бұрын
High Q is what hams drink. It's got electrolytes. It's the adult version of High C.
@TheSmokinApe3 жыл бұрын
Tastes great too 👍
@justawfulgamer77388 ай бұрын
It's what plants crave.
@thesisdavid3 жыл бұрын
Internal antenna tuner tunes Mag Loop (Toroid Coupled) to almost any frequency across the 40m band. Does that really work?
@TheSmokinApe3 жыл бұрын
This is an over-simplification and hopefully I explain it correctly. The Mag-Loop is essentially a large inductor and it's tuned by using an adjustable variable capacitor to bring the loop into resonance on the desired frequency. An internal tuner, or external for that matter, is a matching unit that matches the impedance between the radio and antenna making the antenna system appear to be 50 ohms to the radio, it technically does not tune the antenna at all. So, that means using the internal tuner doesn't make the Mag-Loop any more or less resonate on a particular frequency.
@alanb762 жыл бұрын
Hi Ape. Interesting video. Talking about antenna Q is not a particularly useful conversation. The Q calculation fails to differentiate undesirables (loss resistance) with desirables (radiation resistance). So it's rather uninformative. It is better to focus on bandwidth and efficiency. Beware of antennas that widen bandwidth by adding loss and reducing efficiency (like stainless steel wire coils). 73 de w6akb
@TheSmokinApe2 жыл бұрын
Completely agree, thanks for checking out the video Alan. Hope you are well.
@Capt_Duffy3 жыл бұрын
Going to be worth watching !!!!
@TheSmokinApe3 жыл бұрын
Hope so 👍
@BoB4jjjjs3 жыл бұрын
Stupid comment ahead: Q is a character in Startrek Next Generation! :-D Yes I know, go away Bob!