Hello Peter, Are you doing ok? It has been almost 2 months since the last video and we miss you. We hope all is well and will be seeing some new videos soon. If you are having some medical problems, we pray for your complete recovery! 73, Ski
Hi Guys, just seen the comments about Peter(my neighbor). I can tell you, that everything is ok with him but he is very busy in the moment. Farther there are very few projects in the moment to present videos continously. So Guys, don't worrie, the things will get better again.
Dear Peter, following your last message for the new hear holidays, it was a very long time. I hope find you well, you and your family. Please we miss very much your nice videos and we are waiting for it ..... all the best for you and for your family. Giorgio
To all the people who wrote in the comments that they are worried about Peter. He is fine, just very busy. Go to his community page and you can see that he wrote there 4 days ago to say just this and wish you all Merry Christmas. Have a great new year everybody.
Hello Peter , this wire for the coil please help me with the specifications , is not magnetic , in my country is difficult to find only for internet, thanks
I really miss your videos Peter, but more importantly, I hope all is well with you and your family. Wishing you and your family happiness, and health this holiday season. 73, from your friend in New York City, Keith.
Hey Peter, I have been following you for a few days and admittedly I underestimated your abilities. I would like to apologized formally and publicly! I am looking forward to following you and all your videos. Again please forgive me for my error. Be well.
Hi Peter my name is mark I have question I have ts440s tx are OK but I receive in DSB LSB and USB could it be my DSB filter why can't I select one side band ,thanks in advance
Hello Peter we miss you on UA-cam hope everything is fine with you. Let us know if your not doing any more video's or just taking a break. OR fixing the MEGA REPAIR and it's taking months to due. So once again if you have the time send us a message. *CHEERS* from *TODD* *_73_*
LOL! For 20 years I taught that LC "resonance equation" at University level, and I never knew it was called "Thomson's Formula"! But the "Fuchs Antenna Coupler" I DID know! (But PLEASE Peter, don't use R when you mean Z for the inductor impedance ratio!)
Also we would like to know what makes a Dipole having a diffeence Impediance of any End Feed Antenna? You explained a good point just that it would be of interest why with the same Material used the difference would be that huge.
Dear Peter, i have learned a lot of your videos, i hope you are fine. You certainly know that me as 1 of your fans, am missing you very much and hope to get news from you soon. Be well and take care for yourself, especially nowadays. Alles Gute mein Freund! 73, de Chris ha7wx
Miss your videos Peter and Mike's. Realy wish you both could make some more videos. We know the camera gets in the way but there ways of making the camera so it isn't in the way like mounting it over head. Hope your staying safe. God speed. 🙏🏼
Unsubscribed from the channel because Google no longer sends email alerts for new content on this channel. I will not go and be logged in 24/7 to get notified, they had to just make it opt-in.
Hi Peter, We all miss your videos. I hope you are well and one day you will return. Until then, I re-watch all your videos. I can never watch to many times and learn more every time. 73 Jim
Gday Peter I nearly didn't watch this one but I'm so glad I did what a great refresher. I googled the calculator and it kept suggesting the fx-82AU plus to me. I ended up searching for both the fx-83DE is for Germany the fx-82AU Is sold in Australia where I am. DE and AU in the naming convention. I thought hat was pretty neat and found an fx-82ES And thought it would be for Spanish speaking countries but it isn't looking that way at the moment. We had a similar setup to this antenna in Australia and people called it the butter box because the tuning capacitor was housed in a butter box or Tupperware to protect from the elements. I haven't really seen this setup since the 70s though. Cheers
Nice example video Peter! Folks can avoid some of the manual math by getting the ARRL's "Single-Layer Coil Winding Calculator" (if you don't mind working in inches) to quickly determine the coil length, turns per inch vs. wire size you want to use etc. It's a slide rule style cardboard calculator (I'm sure there's an app for that nowadays!). I followed along using it and your calculations and came up with basically the same values. Still have to do the Z transformation though to figure the tap location. Thanks again Peter! 73 - Dino KL0S
There is an app for that. Well, a website with online calculators and downloadable PC software. Here's the link to their single-layer air-coil calculator. The PC software allows you to calculate the capacitance and Q of the coils as well. They have quite a few useful inductor calculators. coil32.net/online-calculators/one-layer-coil-calculator.html
Another outstanding presentation from Peter. This made me want to set up a small spreadsheet with all the variables so I can immediately try out the various approximations and get the answer for the value of the inductor and the "tapping point" of the coil as an auto transformer. Ausgezeichnet!
The coil wire is tin or silver plated copper coil wire. SOLID silver wire is very expensive and used in making jewelry. Great instruction in using the maths.
Great video, I've been wondering how to work those equations with too many unknowns. Question: at 44:17 you have 55 mm squared on the denominator of the equation to find the inductance (L) for 8mm diameter coil, why 55 mm squared? I think that you wrote the exponent 2 by accident as you didn't squared the 55mm when you entered things in the calculator. Personally, I don't like putting units inside my equations but in their own equations to the right of my calculations.
Right, and as you say he did not actually square the 55mm in the calculation so it turned out OK. For units, I just separately ensure that they all cancel/multiply to the correct unit we are looking for, in this case nH.
When you have an equation with "too many unknowns", that does not mean the equation is unsolvable. You simply estimate values for the variables that seem to optimize your current circuit in terms of size, space, capacitance value and so on and plug in for a potential result. The resulting value will be correct, as are other possible results if you choose different values. For example, if you wish the coil to be 20mm long, then plug it in and based on the resulting inductance value, you can determine where the number of turns is to create the autotransformer from the 50 ohm impedance output of the transceiver. That is done all the time in circuit design.
Now it is more than a year since we last heard anything from Peter, what has happened to him? Peter we miss you, your excellent films and the way you explain. You are, together with Mr Carlson, the best electronic "teacher" on UA-cam. If you read this, and are very busy, at least take one minute to tell us you are ok. 73 LB5JG Asle
Hi. Sorry if this is a tiny bit off topic but perhaps you can help solve this query that is stuck in my head :D Basically the question is weather or not it might be a good idea to use a Bal-Bal transformer at the feed-point on a doublet to match it to the balanced transmission line. The question came about after someone asked if they could use a 1:9 Un-Bal to match their coax to their 450 ohm transmission line. Many people were saying that it would be pointless trying this due to the unknown impedance of the entire system. So i proposed that he used a bluetooth antenna analyser to measure the impedance at the feed-point. Once the impedance of the active elements is known then i would have thought we could match the antenna to the feedline with a Bal-Bal transformer. Then since the system should now be sitting at 450ohm he could then use a 1:9 Un-Bal where he goes from 50 ohm coax to the 450 ohm balanced transmission line. I was just surprised that i have never come across this theory and wondered if there was a reason why it might not work. Perhaps it would affect the way that a doublet works and make it less effective as a multiband antenna? 73's
This video is really highly instructive! Thank You, Peter. But if you not German-speaking viewers are about to search the internet for this type of antenna to get more (background-)information, use the term 'Fuchs-antenna', because 'Fox-antenna' will probably lead you on a false trace. Fox is the English word for (German) 'Fuchs', which happens to be the name of the inventor (Josef Fuchs) of this antenna. And the described matching unit is a Fuchs-Kreis, I'm not sure if it’s called 'Fox-circuit' in English, but it’s probably not.
Hi, your videos are very very good .. excellent job ! .. I would like to request you to make 1 video on the impedance matching over the pcb using your miniVNA Tiny .. no such excellent video is available on the net as far as i have searched for past 1 month. I am trying to learn on how to do impedance matching of my GPS antenna using the miniVNA but couldn't find any good source.
Like so many others im worried about you. It's been 11 months since this last video and nothing's been heard since. I hope you are well. You are certainly missed. Your videos are excellent and you seem like the very embodiment of what it means to be a good member of the ham community. Thanks for the huge number of things you gave taught me. 73 de W1CBD
Hi Peter, great video. Curious, the equation to calculate the value of the coil doesn't include permeability of the core. I noticed in some of my old electronics books that permeability is multiplied where you normalize with the 1nh. Does this equation use relative permeability? where air is around 1 as I noticed most equations use approx. 1.26 X 10-6 . I hope my question finds you well.
I just finished watching all your videos on UA-cam and want to thank you for providing these. I have learned a lot. I hope at some time in the future you will continue with posting repair videos here on UA-cam. Thanks again.
This is getting to be very worrying. There are a lot of youtubers who someday just decide to quit, but usually there is a final farewell video or a message... Peter just disappeared... I am worried, and many others too...
-Hello Peter, are you ok? I Hope everything is ok with you. We all miss the great and informative videos you make here om UA-cam. 73 from Norway, LB5JG
I lost Peter too. I tried an e-mail adress east of Berlin, of which I assumed it was Peter's . But no answer.... Does anybody knows his radio callsign?
Why don't you just simplify that Calculation by making it 300,000 km's/h divided by Frequency in khz so that instead of a Formular the user at the start understands what is Speed of Light, instead using a Formular which in itself confuses just?
PLEASE, Peter, don't use R when you mean Z (or strictly speaking |Z|)! You have no idea of the difficulty I have stopping my first year EE Uni students from confusing the concepts of resistance, reactance and impedance - and the same is certainly also true of many radio amateurs!
Excellent video...,just only one question about .., voltage tolerance for the capacitor..., how many volt consideration these cap.., could be support...?.., thanks YV6ENB
You can also take one or more fixed capacitors which has about the value. Then you have to tweak the coil (spread or squeeze, a winding more or less). The capacitor must also be able to withstand the voltage at this point. The voltage depends on the power of your transmitter.
Re: Calculators. I still prefer GW Basic to a scientific calculator (I run it in DOSBox). It is so much easier to review my calculations and I am always close to my computer or a laptop when I am at the bench.
Wenn ich eine endgespeiste Langdrahtantenne aus Bronze mit der Länge 40 m habe, woher weiß ich dann deren Impedanz? Es geht nur um Empfang im 20 und 40 m Band. Wenn es auf 80m und 160m läuft, um so besser. If I have a end fed bronze long wire antenna with a length of 40 m, how do I know its impedance? It's all about reception in the 20 and 40 m band. If it runs on 80m and 160m, so much the better.
Nice explanation Peter, very nice to show the auto transformer to, its much easyer to handle for the community of our fellow radio amateurs.. speaking of 2m, i would personally as a travel antenna just cut the breid from the center wire in the coax and fold it out to a dipole, but for HF its a little bit bulky ofcourse :-) again nice video... keep it up 73´s Anders
Great video with fine examples on how to do the calculations, Peter! One thing: I thought you mentioned the antenna wire should be longer than the calculated 'lambda /2'. In reality, the wave travels slower in a conductor than in air, so the wire will be shorter (by a factor of 0.9-0.95 times the wavelength) Of course, you need to start with a longer wire and cut it to resonance later, as you said. I have the great Rothammel Antennenbuch, which has about every imaginable antenna type Stein, LA9QV
@@TRXLab Hallo Peter,eind schone Uberraschung. I just found your answer, this warms my heart you are fine Peter, which means relief for me and your fans. Be well I hope you'll be back to us soon. Alles Gute mein Freund! 73, Chris ha7wx
Good video and an appreciated refresher for me. I found myself at one point deciding to suggest that you put the finished product on an analyzer to show the response over frequency, but then I should have realized you would already be doing that! This video has also re-enforced my awareness of the need to purchase some metric measuring instruments. It may not be the "standard" here in the USA, but I happen to like the Metric System and look forward to using it. Now to find some place where I can purchase the tools! Keep up the excellent work!
Das Video wär interessant, aber Dein Englisch hört sich grauenhaft an. The video would be interesting, but your English sounds terrible. Better keep it in German. '73 de HB9CAX
Ach, nur weil sich das Englisch für dich grauenhaft anhört, ist das Video plötzlich nicht mehr interessant? Bist du als technisch interessierter Funkamateur hier oder als Soundartist? Mit Verlaub, selten so einen dämlichen Kommentar gelesen. Aber amüsant. 🙂
Hey Peter: Hope everything is ok with you ?. Certainly missing your repair videos, always look forward to seeing them.
Hello Peter,
Are you doing ok? It has been almost 2 months since the last video and we miss you. We hope all is well and will be seeing some new videos soon. If you are having some medical problems, we pray for your complete recovery!
73,
Ski
Peter, I'm hoping your OK, it seems such a long since your last appearance , we all miss you dear friend, 73, Paul de M0BSW
Oh, i am not the only one who is worried about you, I Hope you are well, I always look forward to the next video on saturday, hope to see you soon.
Hi Guys, just seen the comments about Peter(my neighbor). I can tell you, that everything is ok with him but he is very busy in the moment. Farther there are very few projects in the moment to present videos continously. So Guys, don't worrie, the things will get better again.
Phew! We were concerned. Thanks for letting us know.
Thank God hes Ok, we all were concerned about Peter....
That's good he's a much respected tech on here, I've learned a better way and fast way of doing repairs and trouble shooting thank to Peter,
73 Paul
peter and mike....mike and peter
Thank you for posting this Werlaf mate👍 Good to hear Peter is fine.
:( What`s happened to my fav channel, I miss your vids so much. Hi` from England, pls come back soon..
Hoping you are well, I can not find an E-Mail address to contact you direct .
I hope you and your's are doing ok! The Ham\maker community misses you greatly. Love and respect form North Dakota USA, 73 De N0ZFG
Dear Peter, following your last message for the new hear holidays, it was a very long time. I hope find you well, you and your family. Please we miss very much your nice videos and we are waiting for it ..... all the best for you and for your family. Giorgio
Peter, a lot of people are a little worried as I am. Please let us know that you are OK and all is well.
Hi Peter, we miss you. Hope all is well my friend. Please come back soon.
Hello Peter, I was just wondering where you were as we've not seen you about for a good while now. Hope everything is ok buddy?
Cheers
John
Ciao Peter! its ages that we haven't see any new vieo....are you ok? we miss you very much! please come back! 73
That is good news, great to hear that Peter is OK and there is nothing to worry about. How do I find his Community page?
where did you get the information ? what is going on with Peter ?
@@Aleziss Peter Neighbor is Werlaf. Werlaf left a message 4 months ago in these comments, saying he is very busy and that he is OK.
@@Rich-fr5td ok thank you for the precisions !
I read something from one of the comments on his other video that peter is ill. Not sure if that is true
Hey Peter, missing your vids, hope you are ok...
Learned a lot. Thanks Peter! Its really amazing how much figuring is involved in such a simple looking device .Thanks . 73
Thank you Richard, yeah electronics is always a lot of math...73
To all the people who wrote in the comments that they are worried about Peter. He is fine, just very busy. Go to his community page and you can see that he wrote there 4 days ago to say just this and wish you all Merry Christmas.
Have a great new year everybody.
what is his community page?
Hello Peter , this wire for the coil please help me with the specifications , is not magnetic , in my country is difficult to find only for internet, thanks
I really miss your videos Peter, but more importantly, I hope all is well with you and your family. Wishing you and your family happiness, and health this holiday season. 73, from your friend in New York City, Keith.
Hey Peter, I have been following you for a few days and admittedly I underestimated your abilities. I would like to apologized formally and publicly! I am looking forward to following you and all your videos. Again please forgive me for my error. Be well.
Where are you Peter ?......it seems everyone but Buddy has left
Hi Peter my name is mark I have question I have ts440s tx are OK but I receive in DSB LSB and USB could it be my DSB filter why can't I select one side band ,thanks in advance
Hello Peter we miss you on UA-cam hope everything is fine with you. Let us know if your not doing any more video's or just taking a break. OR fixing the MEGA REPAIR and it's taking months
to due. So once again if you have the time send us a message. *CHEERS* from *TODD* *_73_*
Must have been abducted by aliens.......seems all the radio repair guys went away at the same time......Thank god Buddy is still around.
LOL! For 20 years I taught that LC "resonance equation" at University level, and I never knew it was called "Thomson's Formula"! But the "Fuchs Antenna Coupler" I DID know! (But PLEASE Peter, don't use R when you mean Z for the inductor impedance ratio!)
Also we would like to know what makes a Dipole having a diffeence Impediance of any End Feed Antenna? You explained a good point just that it would be of interest why with the same Material used the difference would be that huge.
Dear Peter, i have learned a lot of your videos, i hope you are fine. You certainly know that me as 1 of your fans, am missing you very much and hope to get news from you soon. Be well and take care for yourself, especially nowadays. Alles Gute mein Freund! 73, de Chris ha7wx
Miss your videos Peter and Mike's. Realy wish you both could make some more videos. We know the camera gets in the way but there ways of making the camera so it isn't in the way like mounting it over head. Hope your staying safe. God speed. 🙏🏼
we miss you
Hi all friends, I ask you to hear from Peter.
Thanks for collaboration
Moon 🌙 sHine XXX small compact beam three element recycle ♻️ project and small enough for portable DX expeditions
Unsubscribed from the channel because Google no longer sends email alerts for new content on this channel.
I will not go and be logged in 24/7 to get notified, they had to just make it opt-in.
Hi Peter, We all miss your videos. I hope you are well and one day you will return. Until then, I re-watch all your videos. I can never watch to many times and learn more every time. 73 Jim
Now I am convinced that it is worth investing on a good LCR meter. Thanks for this deep analysis, 73
Where are you bud? Bored? Hope all is well !!
Please come back to UA-cam we all miss your videos.
Wow ? Really now make a small 🐜 aNt 🐜 TeN nA field purpose yes indeed
Gday Peter I nearly didn't watch this one but I'm so glad I did what a great refresher. I googled the calculator and it kept suggesting the fx-82AU plus to me. I ended up searching for both the fx-83DE is for Germany the fx-82AU Is sold in Australia where I am. DE and AU in the naming convention. I thought hat was pretty neat and found an fx-82ES And thought it would be for Spanish speaking countries but it isn't looking that way at the moment. We had a similar setup to this antenna in Australia and people called it the butter box because the tuning capacitor was housed in a butter box or Tupperware to protect from the elements. I haven't really seen this setup since the 70s though. Cheers
Glad that you liked it! I wasent aware on the different county versions..Thanks for clarification!
I'm missing your videos Peter!
Where are you?
73
Nice example video Peter! Folks can avoid some of the manual math by getting the ARRL's "Single-Layer Coil Winding Calculator" (if you don't mind working in inches) to quickly determine the coil length, turns per inch vs. wire size you want to use etc. It's a slide rule style cardboard calculator (I'm sure there's an app for that nowadays!). I followed along using it and your calculations and came up with basically the same values. Still have to do the Z transformation though to figure the tap location. Thanks again Peter! 73 - Dino KL0S
There is an app for that. Well, a website with online calculators and downloadable PC software. Here's the link to their single-layer air-coil calculator. The PC software allows you to calculate the capacitance and Q of the coils as well. They have quite a few useful inductor calculators.
coil32.net/online-calculators/one-layer-coil-calculator.html
Thanks for the hint Dino, that is surly very helpful! Glad tha you liked it 73
Another outstanding presentation from Peter. This made me want to set up a small spreadsheet with all the variables so I can immediately try out the various approximations and get the answer for the value of the inductor and the "tapping point" of the coil as an auto transformer. Ausgezeichnet!
good idea with the spreadsheet Peter....Thanks for watching 73
@@TRXLab I'll post a copy!
The coil wire is tin or silver plated copper coil wire. SOLID silver wire is very expensive and used in making jewelry. Great instruction in using the maths.
You are absolutely right David! Thanks for watching and comment 73
Build your own antenna recycle ♻️
Don't stress out about Americans. They have ready access to mm rulers, too. (Bear in mind they do drive Japanese and European cars.)
lol okay thanks :-)
1 year since a video, are you ok Peter
peter and mike....mike and peter
Great video, I've been wondering how to work those equations with too many unknowns.
Question: at 44:17 you have 55 mm squared on the denominator of the equation to find the inductance (L) for 8mm diameter coil, why 55 mm squared? I think that you wrote the exponent 2 by accident as you didn't squared the 55mm when you entered things in the calculator. Personally, I don't like putting units inside my equations but in their own equations to the right of my calculations.
Right, and as you say he did not actually square the 55mm in the calculation so it turned out OK. For units, I just separately ensure that they all cancel/multiply to the correct unit we are looking for, in this case nH.
Yes you are right David my mistake
When you have an equation with "too many unknowns", that does not mean the equation is unsolvable. You simply estimate values for the variables that seem to optimize your current circuit in terms of size, space, capacitance value and so on and plug in for a potential result. The resulting value will be correct, as are other possible results if you choose different values. For example, if you wish the coil to be 20mm long, then plug it in and based on the resulting inductance value, you can determine where the number of turns is to create the autotransformer from the 50 ohm impedance output of the transceiver. That is done all the time in circuit design.
@@danluzurriaga6035 Thank you for the further explanation, I've been too single solution oriented.
Now it is more than a year since we last heard anything from Peter, what has happened to him? Peter we miss you, your excellent films and the way you explain. You are, together with Mr Carlson, the best electronic "teacher" on UA-cam. If you read this, and are very busy, at least take one minute to tell us you are ok. 73 LB5JG Asle
I sure miss having this guy around,, I love his videos and have learned a lot from him. I'm hoping he is well,, I'm sure we all are.
Hi. Sorry if this is a tiny bit off topic but perhaps you can help solve this query that is stuck in my head :D
Basically the question is weather or not it might be a good idea to use a Bal-Bal transformer at the feed-point on a doublet to match it to the balanced transmission line.
The question came about after someone asked if they could use a 1:9 Un-Bal to match their coax to their 450 ohm transmission line. Many people were saying that it would be pointless trying this due to the unknown impedance of the entire system.
So i proposed that he used a bluetooth antenna analyser to measure the impedance at the feed-point. Once the impedance of the active elements is known then i would have thought we could match the antenna to the feedline with a Bal-Bal transformer. Then since the system should now be sitting at 450ohm he could then use a 1:9 Un-Bal where he goes from 50 ohm coax to the 450 ohm balanced transmission line.
I was just surprised that i have never come across this theory and wondered if there was a reason why it might not work.
Perhaps it would affect the way that a doublet works and make it less effective as a multiband antenna?
73's
This video is really highly instructive! Thank You, Peter. But if you not German-speaking viewers are about to search the internet for this type of antenna to get more (background-)information, use the term 'Fuchs-antenna', because 'Fox-antenna' will probably lead you on a false trace. Fox is the English word for (German) 'Fuchs', which happens to be the name of the inventor (Josef Fuchs) of this antenna. And the described matching unit is a Fuchs-Kreis, I'm not sure if it’s called 'Fox-circuit' in English, but it’s probably not.
Hi, your videos are very very good .. excellent job ! .. I would like to request you to make 1 video on the impedance matching over the pcb using your miniVNA Tiny .. no such excellent video is available on the net as far as i have searched for past 1 month. I am trying to learn on how to do impedance matching of my GPS antenna using the miniVNA but couldn't find any good source.
Like so many others im worried about you. It's been 11 months since this last video and nothing's been heard since. I hope you are well. You are certainly missed. Your videos are excellent and you seem like the very embodiment of what it means to be a good member of the ham community. Thanks for the huge number of things you gave taught me. 73 de W1CBD
Irgendwie klingt das bereits ganz am Anfang schon nach Fuchskreis und Fuchsantenne.. :D
so ist es :^)
Hi Peter, great video. Curious, the equation to calculate the value of the coil doesn't include permeability of the core. I noticed in some of my old electronics books that permeability is multiplied where you normalize with the 1nh. Does this equation use relative permeability? where air is around 1 as I noticed most equations use approx. 1.26 X 10-6 . I hope my question finds you well.
I just finished watching all your videos on UA-cam and want to thank you for providing these. I have learned a lot. I hope at some time in the future you will continue with posting repair videos here on UA-cam. Thanks again.
This is getting to be very worrying. There are a lot of youtubers who someday just decide to quit, but usually there is a final farewell video or a message... Peter just disappeared... I am worried, and many others too...
Hi Peter, great video! Please now one for EFHW antenna and UNUN for 160m, 80m and 40m. Thanks 73, ZR6PSR
13 months and radio silence still goes on... There is something wrong here... Peter, if you are well, please let us know. You are missed very much.
-Hello Peter, are you ok? I Hope everything is ok with you. We all miss the great and informative videos you make here om UA-cam. 73 from Norway, LB5JG
I lost Peter too. I tried an e-mail adress east of Berlin, of which I assumed it was Peter's . But no answer.... Does anybody knows his radio callsign?
Hello Peter. Hope you are OK. I always enjoyed watching your videos. Lots of information, well presented.
Great video Peter and thanks for the 11m specifications ;-)
Thank you Luke
Peter, Please put a quick video together to let all your follower know that you are OK! We have been missing you!
Hi Peter, wishing you and your family and fantastic Christmas and a prosperous new year - take care.
Thank you so much for this wonderfully informative video.
73 Chaz W2CHZ
hello very good Learning job you provide. could explain how you will build a 1/2.25 balun for a delta loop. thanks again
Why don't you just simplify that Calculation by making it 300,000 km's/h divided by Frequency in khz so that instead of a Formular the user at the start understands what is Speed of Light, instead using a Formular which in itself confuses just?
PLEASE, Peter, don't use R when you mean Z (or strictly speaking |Z|)! You have no idea of the difficulty I have stopping my first year EE Uni students from confusing the concepts of resistance, reactance and impedance - and the same is certainly also true of many radio amateurs!
You and Mike have us a bit concerned. Peter. Hope all is well. We absolutely are missing you.
hello peter just wondering if you are using the hakko fr-810 still. seems like everyone only wants the quick unit.
It's another MASTER CLASS as usual. Congrtulations Peter. 73 PY5MM Mauricio from Brazil
Peter, I hope all is well. Looks like everyone is as worried about you as I am. Hoping to see you back on the air soon.
Hi Peter, how are you,hopefully everything ok, we are all waiting for you .. Hi from italy...
Just checking to see if you are ok, and I see others are wondering also. Hope everything is good. 73, W9DXX
Excellent video...,just only one question about .., voltage tolerance for the capacitor..., how many volt consideration these cap.., could be support...?.., thanks YV6ENB
HI TO ALL PETER'S FRIENDS, I ASK ALL YOU TO FIND A WAY OF MEETING ME ABOUT YOUR NEWS.
THANKS FOR THE COLLABORATION-
PAUL
Merry Christmas and Happy New Year Peter all the best to you in the new year. 73
Miss your videos... I hope everything is ok with you and your family. 73
Hello Mr. Peter, he hasn't been making videos for a long time, I hope everything is ok.
Greetings from Naples Italy
Paolo Di Masi
Great video and a refresher of all the things that have forgotten !
73 N8AUM
Hi everyone, help me get news from Peter.
Thanks
A antenna video Yes! :) thanks
Can you do this without The variable capacitor??
You can also take one or more fixed capacitors which has about the value. Then you have to tweak the coil (spread or squeeze, a winding more or less).
The capacitor must also be able to withstand the voltage at this point. The voltage depends on the power of your transmitter.
@@berndb.5097 Ok i guess its not super important for an antenna that shall only be used for reciving?
@@80Loke True, and you do not have to pay attention to the voltage of the capacitor :-)
Thanks for letting us know, that Peter is OK. Please let him know his friends are missing him, and we have many Ideas and projects for him.
Ive read on some comments that he is ill. Not sure if that is true
Hi Peter
What happened with your we miss you.
Thank you for your videos. Hope all is well.
Re: Calculators. I still prefer GW Basic to a scientific calculator (I run it in DOSBox). It is so much easier to review my calculations and I am always close to my computer or a laptop when I am at the bench.
Salve a tutti gli amici, vi chiedo di sapere notizie di Peter.
Grazie per la collaborazione
Wenn ich eine endgespeiste Langdrahtantenne aus Bronze mit der Länge 40 m habe, woher weiß ich dann deren Impedanz? Es geht nur um Empfang im 20 und 40 m Band. Wenn es auf 80m und 160m läuft, um so besser.
If I have a end fed bronze long wire antenna with a length of 40 m, how do I know its impedance? It's all about reception in the 20 and 40 m band. If it runs on 80m and 160m, so much the better.
Please upload a new video for us ...
73,s
Nice explanation Peter, very nice to show the auto transformer to, its much easyer to handle for the community of our fellow radio amateurs.. speaking of 2m, i would personally as a travel antenna just cut the breid from the center wire in the coax and fold it out to a dipole, but for HF its a little bit bulky ofcourse :-) again nice video... keep it up 73´s Anders
Well there are so many concepts with advantages and disadvantages and this concept is one of those :^) Thanks for watching 73
Hallo Peter,
lange nichts mehr von dir gehört und gesehen. Ich hoffe doch das alles OK ist.....
Ich mache mir schon Sorgen :-(
73 Bernd
Hello sir, where are you, hope you are fine
HEY. PETER. HOW ARE YOU .. MISS YOUR VEDIOS
Great video with fine examples on how to do the calculations, Peter! One thing: I thought you mentioned the antenna wire should be longer than the calculated 'lambda /2'. In reality, the wave travels slower in a conductor than in air, so the wire will be shorter (by a factor of 0.9-0.95 times the wavelength) Of course, you need to start with a longer wire and cut it to resonance later, as you said. I have the great Rothammel Antennenbuch, which has about every imaginable antenna type Stein, LA9QV
Thanks for feed back. Yes you are right with the velocity factor but I did not want to bring more mathe into it. I already thought it was to much...
Hi Peter! I hope that you are doing ok!
Peter....."where are you ? please talk to us, your followers.
All ist fine don't worry
@@TRXLab thanks for your reply, look after yourself my friend.❤️👍
@@TRXLab Hallo Peter,eind schone Uberraschung. I just found your answer, this warms my heart you are fine Peter, which means relief for me and your fans. Be well I hope you'll be back to us soon. Alles Gute mein Freund! 73, Chris ha7wx
Good video and an appreciated refresher for me. I found myself at one point deciding to suggest that you put the finished product on an analyzer to show the response over frequency, but then I should have realized you would already be doing that!
This video has also re-enforced my awareness of the need to purchase some metric measuring instruments. It may not be the "standard" here in the USA, but I happen to like the Metric System and look forward to using it. Now to find some place where I can purchase the tools!
Keep up the excellent work!
Glad that you liked it Wayne! A I understand the issue with the metric system..., thanks for explaining 73
Das Video wär interessant, aber Dein Englisch hört sich grauenhaft an.
The video would be interesting, but your English sounds terrible. Better keep it in German.
'73 de HB9CAX
Lieber Rene, das tut mir leid das es dir nicht gefällt. Manchmal hilftr es die Widergabegeschwindigkeit auf 1,5 zu setzen.
Ach, nur weil sich das Englisch für dich grauenhaft anhört, ist das Video plötzlich nicht mehr interessant? Bist du als technisch interessierter Funkamateur hier oder als Soundartist? Mit Verlaub, selten so einen dämlichen Kommentar gelesen. Aber amüsant. 🙂