Carl Blare

Paul Thurst is a professional radio engineer with a popular blog, and on December 24th he posted a wonderful column on PART 15 BROADCASTING.

http://www.engineeringradio.us/blog/

Two errors occurred yesterday (Dec 25) when posting here at part15.us…

I attempted to add a post to 1580’s “AM Antenna Solution” and received a message that my post was being delayed pending review by a moderator, but the post never appeared, so I think it went nowhere.

On a second situation I attempted to add a post to censoredship’s “Transmitter here the end of the week”, and was switched to an otherwise blank page with two words at the top “Service Unavailable”.

I was able to post notice of the new Low Power Hour without delay.

Without doubt the most difficult LPH so far, because I had so much trouble deciding what it would be.

Even though it will make sense to the listener and contain regular low power content, there were many versions being considered before what actually came about.

Introspection need not go on further, as I now give you No. 69.

The main ingredient is a very carefully reduced version of the ALPB Meeting of Dec. 7th, presenting the main points.

Another episode of Bonnie and Clyde plus the humor of “Pappy”, a new ALPB member.

And another installment of the “Ongoing Conversation” with MICRO1700.

http://www.kdxradio.com/lph.html

Words can come across in unintended ways….

The opening announcement just now on a concert program made me gasp in surprise until I figured out what was being said…..

“A whole festival devoted to piano music……”

Say it a few times… “A whole….”

Oh dear.

Hello Part 15 Stations.

Two holiday shows have been made available from the Blare OnAir series, programs of approximately one hour each.

Blare OnAir from Dec. 20, 2009 is titled “Spin Ball”

Blare OnAir from Dec. 27, 2009 is titled “Naivte Scene”

Some scrolling is required to find the audiofiles, but the listing is according to the dates at…

http://kdxradio.com/blare_dload.html

As reported our carrier current system is always in a test mode because of what I find to be a very hashy rule, 15.221, that besides talking about many different subjects all bunched together, becomes especially imprecise on the most important point, measuring the near field radiation for compliance.

If you have insomnia tonight, all you need is to follow this and you’ll be asleep in one minute…

(a) Carrier current systems … may operate …. provided the field strength levels of the radiated emissions do not exceed 15uV/m, as measured at a distance of 47.715/ (frequency in kHz) meters from the electric power line.

Levels? The word “levels” is plural. How can a single transmitting system produce numerous levels at a particular point in space?

Furthermore, where is “from the electric power line” The entire neighborhood is draped in power lines going everywhere.

It’s impossible to comprehend which exact power line to measure away from, because it will always be toward further power lines.

Christmas can wait. This is important.