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Benjamin Maggi I disagree. I fail to see why some people are so obsessed with HAM radios, and I have no interest in them whatsoever. Since I am not a "real" engineer, I guess prefer the helpfulness of the open source hardware community over the elitist HAM radio people.

***** I'm sorry if your experience of HAM radio people is that they are elitist. Some are. Unfortunately, many of those who are left are not as technical as this guy. The arduino, etc. are really awesome developments and great tools. I think Benjamin is lamenting the fact that many people dabble in arduino and never get any deeper - to understand how things work inside. This older style work requires a deep understanding of device physics and RF principles. Much of today's work also requires that knowledge (like in high speed digital design) but few people get into it as a hobby.

Sean Breheny Thank you for that kind explanation. I am just getting into electronics, and am beginning with Arduinos and a Raspberry Pi. But, I am very interested in the fundamentals of electronics. I spend a lot of time watching the EEVBlog videos and others, and experimenting with what I have and reading about how things work and what other people are doing. I am very serious about it, but don't have as much time as I wish to be involved with it. I don't think it's fair to say that people that don't put in all their time in effort to use something are inferior beings. My main hobby is linguistics, but I don't get all up in arms when someone just learns a foreign language for a job and doesn't learn all the intricacies of the grammar of it and learn to pronounce it perfectly. Not everyone can do everything (unless they had infinite free time,) so I don't get angry with them for not sharing my passion for languages, as not everyone likes the same things. Some people might dabble in Arduinos for things like wearable electronics and never delve deep into electronics, but they very possibly have something they're very good at that you aren't, like sewing or crafts. And no hobby is inherently better than another, so there's no use blaming people for not being as passionate as a specific interest as you. I'm sure not all HAM radio hobbyists are elitist, but many times I've come across websites and forums related to it, I've come across such behavior. In any case, I have no interest in the intricacies of HAM radios, so I don't find this video very interesting. But that doesn't mean I or anyone else is an inferior human being for not being interested in it.

@@sjheiss HAM radio enthusiasts. “My Antenna Bigger than Yours.” Therefore I cant be seen talking to you. 😂 Unless of course, I’m holding fluorescents under it. About wraps up my relations with operators. They really are nice people, away from radios. Always tell them “Your the best I know” if you need any help getting off the ground. God bless radio waves.

Dennis! :) Talking of homebrew test equipment... I've been meaning to send you a photo of my ESR meter working, that you gave me so much help with before xmas. Sorry, guilty conscience here, I will get around to it. Thanks again for all your help with that.

I agree with you... And your last sentence was like a cherry on top of a cake!

I second that. There's not much love anymore for old fashioned analog. Pete from Sparkfun did some nice video's and of course Dave. Another nice, often overlooked electronics channel is HomoFaciens (look for him on RU-vid). I can recommend the MITx 6.002 course (www.edx.org/course/mitx/mitx-6-002x-circuits-electronics-1130). And Chris from the Amp Hour started a course I believe. But it would be nice to see some more tutorials on old fashioned PRACTICAL electronics in context of a real world "problem" / application. --> p.s Well that's weird I thought I replied to a comment from someone!?! Google+ doing weird things again?

true exactly what I was thinking.

Yeah that was one sexy beas of a machine.

Ah the smell of rosin first thing in the morning.

Conversion frequencies that may seem random are chosen carefully. Each conversion involves building and shielding a local oscillator, dealing with an image reponse and providing an IF filter. He explains that the first conversion is upward, so that the image response is kept well outside the 0-200 MHz display range. He shows the local oscillator frequencies that can leak into the display when not screened. The 10.7 MHz IF is standard for FM radios which allows him to use a readily available cheap ceramic IF filter.

You tell him Mitch you.... miserable get. haha. Give the guy a break. Just dont watch what you dont like. Loads here love it, myself included.