Yes there's always videos showing you how to use equipment but they never explain how to hook things up and that's pretty important. Good informative video.

Brilliant! Absolutely brilliant! Thank you for this very informative video. Finally no more guesswork in my mind about the proper way of doing this kind of measurements! 73

Hi Peter. You made the selection of attenuators for different equipment with different input level ratings made sense for me. Thank you. John C

This is great and answers many questions I had... as well as several I didn't know I needed to ask! If only the profs I had back in my university days had been able to present ideas as effectively as Peter does - those years would have been more enjoyable and far less frustrating!

Hi Peter, a very superb explanation of how to make sure everyone can avoid overloading their test equipment. Great tips to follow. I enjoyed the video very much. 73

Thanks for that very valuable video. I just bought a spectrumanalyser and glad you made this video sure help more than you know. saved me from damaging my new Rigol. Wish others were as kind as you are and donate so much of your expertise to help others. I am so Grateful many thanks God Bless 73s wb7qxu

Thank you Peter. I found the information regarding the maths especially useful.

Great video, thank you for taking time to do videos, they are the best

Thanks Peter for simple explanation.

Thanks for sharing tis vital bit of information Peter. It should help lots of folks out. I see you have the same test radio on the bench I do 73 my friend.

Thsnks Peter that was very well explained by u. Very helpfull and a great video as always.

Absolutely perfect. I can even understand the extra time you are taking to explain it all. Sometimes I do tend to fall to sleep but this is due to my work schedule. Seriously, I put a piece of wire into my Rhode & Schwarz FS300 and "listen" to my dummy load on TRX. Regards, vk2fex

Another priceless gem for us (old) radio repairers. I guess the same techniques would apply to connecting an oscilloscope to the Tx? Thank you Peter.

Meny thanks, & seasons greetings kind regards from New Zealand snell

Very thorough video Peter, good work.

Thanks Peter for this usefull video, great tips and very well explained. 73

Nice lesson, Peter. Thanks.

Thanks. Good clarification and refresher course

I love your videos and appreciate them very much

Thanks Peter just what Iv have been searching for big thumbs up 👍

Nice video Peter very informative as usual.........................Thank you.........................Berni

Good explanation..other simple solution is inside of your previous video where you have show us how to pick up a signal via inductive way (ex. toroid). Have a nice day !! '73

What a wonderful presentation. I admire your knowledge and your skills at making difficult concepts look easy. I do have one thing that I can not understand. When using attenuators to reduce the signal, how do you know what the power dissipation requirements are for the attenuators? I will try to describe what I mean. With your 600 W dummy load, which has a -40 db attenuator built in.... you still need 10 more db of attenuation to reduce the 50 dbm to 0dbm. How do you know what power handling is required of the 10 db inline attenuator? It would seem to me that with the RF padded down you are not going to be dissipating much power in the string of attenuators. Is that true or am I misunderstanding? Thank you very much for what you do here. Bob

Thanks for the video.

Super presentation! What about the CMS54 R&S ?

Peter, Thank You for your time! Your videos are just great; could you do a segment on the main pieces of equipment you have in your shop? I have basic electronics background, nothing close to what would be called an electronic technician working in the RF field. I would however, like to know the basic equipment required to repair and align radios up to 30Mhz. Would be nice to include equipment in the 2m and 7cm band too. I see some really affordable equipment on ebay that I could get started in, but would like to know the basics. Maybe a more advanced than your #50 video in regards to a first lab on a budget. Equipment that is required to repair the RF Amps on TX and RX, alignment of radios that are off frequency, alignment of meters and receive (AF, etc). Like I said, I know enough to get in trouble, just need a little bit more to know how to get myself out of trouble. Thanks!

Great Video Peter! I love seeing how the test equipment is connected to the radio. So many videos just show meter readings and never explain how the radio is connected. I do not own a dummy load with a test port but I do have a Bird watt meter with a rf sensing slug. Will that work in place of the dummy load test port?

Hello, Where I can buy Spectrum analyzer like yours ? I mean the 1 which monitor.

Old video i know, been looking for a Watt To dBm Conversion Table like the on in your video, seen loads but not as good as the one you have, any links to the one you have. excellent video as always thanks.

Peter fantastic video as always. By the way, can you tell me what is the model of the audio interface sitting on top of Agilent meter?

Only wish I had the test equipment you have. But then again I'd have to take a few classes to know what heck to do with all of it.

Simply plug in the cable and press "ON" could blow up your valuable device. So first watch here!

Thanks, very useful as always, 73

Peter nice "back to basics" video, you did a awesome job. One question, do the through attenuators that you demonstrated in your video act exactly like a 50 ohm dummy load or do you need to terminate the through attenuators with 50 ohms when not connected to a piece of equipment?

Nice video. Did you build the 600 watt dummy load that is in the video. I can not seem to find any online with test ports attached out oft box. Thanks for a great video.

Hello Peter, thanks for sharing. Just a question about the Power calculation, the voltage written on the measuring device is related to as a peak voltage then the power calculation should not be P=(Epk/sqrt(2))^2/Z =E^2/(2.Z) as we are taking this way the Erms value? and not only P=U^2/Z Then for the measuring device accepting only a 3v maximun input voltage, the related max power should be 90mW which is ca. 20dBm Then the attenuation required should be at least 20dBmin? Or that is totally wrong ? ;) thanks

Hi Peter ,great video, what spectrumanalyser are you using please?

what is spectrum analyzer do you use? the brand I mean. I saw it was connected to a PC monitor? THank you

Thank you

I know you enjoy building your own test equipment,are you familiar with the T747 Tester for microphones. They work great - but I was wondering how hard it would be to add a modulation meter to show the amount of modulation a microphone is putting out. That way you could see how much increase there is over different microphones,stock,noise canceling,different brand,different element and amplified it is hard to tell just listening. Thanks for any help you can give it will be appreciated.

Yes the driver puts out a small amount of power, To drive the output transistors or mosfets so the spectrum analyser picks up the smallest of signals even from the driver.

Hi what do you think the hp8922m for test ? For radio. Ty

one more question, the att. 10 db on the sig hound connected to the dc block,, what is the power ratting on it,,, would it have to be 10 watts ? Thanks Peter

Hi Peter (or anyone). OK, I have what may seem like a dumb question. Your equipment has upper and lower signal limits. What happens when you use an oversize attenuator? Does it completely squash the signal and display zero on your equipment or is it possible for the reading to exceed the lower limit of the test equipment and present a risk of harming the equipment? In other words, I think I'm asking: do you need to take bandwidth into account when selecting an attenuator? Thank you in advance.

Hi, thanks for all. Do you have a link to the conversion table ? Pls. 73's

41:26 "counter is not heated up" It is connected to an external reference. The counter is dead on.

peter 100w = 70.7 Volt did you mean 70.7 mv what does dbm mean? very interesting how you derive at the readings from the input to a radio back to are old friend Ohms Law

HELLO PETER. LOVE YOUR VIDEOS. IN THIS VIDEO YOU SHOW A HARD COPY OF YOUR CONVERSION CHART. I HAVE LOOKED ALL OVER THE INTERNET FOR A PRINTABLE VERSION EXACTLY LIKE YOURS BUT CAN NOT FIND ANYTHING CLOSE. DO YOU KNOW WHERE I CAN GET THE EXACT SAME CHART AS YOURS? THANKS JERRY

howmuch attenuation in de spectrumanalyzer itself ?

thank you

Watched this many times now ..brilliant.. I know you are very bust but at some stage could you address beginners trap of confusion between a tone in the Audio domain vs the tone in the Waveform domain, Mavbe in the 2 tone ssb test and an S9 alighnment... Thnanks in advance.

Is there any problem with putting say 3 T bnc connectors after the attenuation to send the output to 3 devices, say scope, counter and spectrum ananlser,basically is the attenuated signals dbm value comprimised if split out to 3 peices of test equiptment? Thanks in advance

Another brilliant video!!!!! 73 De N0ZFG

Hey. Good explanation :) Can you tell me model of that dummy load?

Nice watt meter to!

did you make the dummyload yourself, can't find a good dummyload with attenuation on the internet.

So what exactly is that “test port” dummy load device called? Is this simply a fixed attenuator designed to dissipate a 100 watt RF signal? Where do I find one that doesn’t cost more than my spectrum analyzer did? I tried to google such a device and Pasternack came back with what I believed to be the device for about $1,700 which is what I paid for my Siglent analyzer back in May 2017.

How do calculate the watt value for a SSB signal for the formula??? PEP AVG ??

Nice sticker on the Clock ;-)

Good evening! May I know the model of your S.A., please ?

Very interesting demo *Peter* , is it preferred to use a DC block attenuation pad that is close to 0 dbm? Also what is the purpose of testing a radio at it's maximum power level not at 10 db down? I like the demo's but I much prefer the repair video's that's just me. Thanks again for latest video and look forward to the next installment from TRX Bench, *_Cheer's 73_*

Peter could you pass on the Program your using on the computer as a SpectrumAnalyser ? By the way good video well explained .. Email via QRZ ..

It is a real high le el rf skilled information 4z4RE

Warum klebst du uhrzeit und datum am Bildschirm ab... 😐😐😐

Es ist so anstrengend, diesem so schlechten Englisch zu folgen. Mach es doch einfach in Deutsch. Right?

Great video...a question....if someone gave me an in line vented barrel type attenuator ,similiar but smaller than the one you are using, if the attenuation value information isnt on the attenuator how can you calculate its value?? Cheers