radio8z

This site is moderated and here goes.

Thanks to all who posted responsibly.

Thread locked.

Tim remarked “I’m perplexed by the comment about 25 minutes of advertising in an hour. I’ve never actually heard this anywhere, no matter how many complain about it.”

I am also perplexed but I measured this using a stop watch during the third hour of the Rush Limbaugh program aired on WTVN in Columbus, Ohio.  I stopped the watch if any comm…[Read more]

Mark, you make a good point that they can still play commercials because some are listening, however, the linked article demonstrates that the broadcasters apparently perceive a problem with declining numbers of  listeners.

I only spoke for myself in my previous post but I know my wife does not listen to broadcast radio, and neither do my sons…[Read more]

Thanks for the link which has content which I classify as wishful thinking.  Interference has never stopped me from listening to programming which I wanted to hear.  The reason I no longer listen to broadcast radio, neither AM nor FM, is that there is nothing I want to hear available and that I cannot stand 25 minutes per hour of commercials and s…[Read more]

Not knowing anything about this specific device I will make a general comment about spectrum analyzers applied to Part 15 devices.

For AM transmitters, an analyzer most likely will detect harmonics and spurs on the signal but, as Rich mentioned, the absolute amplitudes are not guaranteed to be accurate, but amplitudes relative to the carrier are…[Read more]

Got it.

At first I missed that your board has been modified and it does make sense to get pics of a good board to undo the damage.

Hope someone can provide this for you.

Part15Engineer wrote “I got schematics and a board layout from him (had to sign an NDA so i can’t give them out) but the schematic lacks part location references such a T1, R4, Etc.”

Help me understand your situation.  How would pictures of the board help you if you have the actual board in front of you?  It seems that having the pictures wou…[Read more]

TheLegacy wrote” No link to prove this one but I’ve heard from a friend he is VERY VERY hard to get a hold of…”

I have found the opposite to be the case and  , in once case, have talked to Keith via telephone.  You should rely less on “friends” information and more on your own experience rather than conjecture.

He also wrote “…because Kei…[Read more]

Centinal,

I purchased an R PI a couple of years ago just to play with.  It does have audio and video capabilities but being a Windows experienced user with not much Linux experience I can only comment on what “canned” programs I found.

The platform supports Kobe which is an extensive player/server application which can import and play…[Read more]

Centenial,

You wrote “Other than my claim of original content, you want to see something more like the content found in this –”

To my reading of your original post, I could not connect the content to the general interest of a Part 15 enthusiast.  The two postings you cited are an offer for those interested to use their content in their pr…[Read more]

A reminder:  this forum is about supporting Part 15 radio.  I fail to see how the original post is relevant in this regard.

Also, anyone posting links should at least give a synopsis of the content so others do not waste time on things which do not interest them.  It would be helpful if those posting links add their own original reasoned co…[Read more]

If I were an engineer (which I am) and was analyzing the “Range Extender” (which I am not) I would be very interested in measuring the efficiency of the device.  What is the loss in the coils and tuning slugs?  How much power is lost in driving the metering circuit?  Bottom line is how much power is delivered to the antenna system with a given DC…[Read more]

TheLegacy wrote “You’ll fry it at more than 100 mW because of its low rated parts inside. ”

You may well be right but how do you know this?  Is there a published specification from the manufacturer which states the maximum power handling capability?  Any documentation regarding maximum power?

Otherwise, it is best if speculation not be used.

John,

This has potential to be a very useful discussion.  I suggest we look at features and functions separately, e.g. a feature is the transmitter is indoors rack mounted, and function is to produce maximum radiated power.  I hope we don’t get wrapped around the axle and distracted by ground leads for now and just explore what can be p…[Read more]

Folks, read the linked article if you wish but I do not see how, with the direction this thread is heading that it will end well.

Locked.

Neil

And you know this how?

Neil

Please try to keep to the original topic when replying, especially to questions pertaining to a specific topic.  Though TheLegacy’s post is interesting and deserves a read it did not address the question posed and could have been better presented in a new thread.

Thanks,

Neil

Regarding the National Memorial Day Parade, do whatever you feel is appropriate.

My plan is to go dark and my stations will be off the air on Memorial Day in homage to those of us who are now silent.  There is nothing I can do or say to honor those of us who are now gone other than to silently bow in remembrance of them.

Neil

Artisan wrote “If they’re beside each other, there’s probably nothing to worry about.”

This is certainly true since receivers in a near field of a transmitter, and those in high strength fields can produce many artifacts, so what is a license free broadcaster to do to separate artifacts from reality?

Say I am using a transmitter for license fre…[Read more]