ArtisanRadio

Maybe, maybe not. Depends on the FCC inspector. But you could certainly plug in a Talking House or Talking Sign ( that has been certified for use in that manner). I mounted my Talking Sign on the ceiling and ran the wire antenna outdoors above the roofline, which essentially achieves the same thing. No extension cord, just the stock transmitter.

Maybe, maybe not. Depends on the FCC inspector. But you could certainly plug in a Talking House or Talking Sign ( that has been certified for use in that manner). I mounted my Talking Sign on the ceiling and ran the wire antenna outdoors above the roofline, which essentially achieves the same thing. No extension cord, just the stock transmitter.

I agree, RichPowers, I’d like to hear more, even if it risks getting into what might (or might not, depending on interpretation) be called an LGL.

The problem with FM range claims is that range always depends on a number of factors, which are usually glossed over.

As you state and show, terrain (or geography) and obstructions (such as buildings) play a large factor.  These are different for every installation.

The equipment used to receive the signal is also a huge, and mostly limiting…[Read more]

I have been a Moderator here for some time, and also over at the ALPB until Jim Henry became Chairman.

One of the more difficult aspects of the job is to determine a poster’s intent.  If you take each post of even a blatant troll in isolation, they may appear quite innocuous, and even reasonable.  But taken as a whole, another pattern e…[Read more]

I’m personally getting rather tired of the discussions surrounding Part15.219 (or RSS210) antennas, ground leads, etc.  The intent always appears to be negative in nature, and an attempt to discourage current and future Part 15 broadcasters.

If you go to Part 15.219, you’ll find the following: “The total length of the transmission line, antenna…[Read more]

Then why bring it up again?

You might take note that this is not the ALPB.

It should be made perfectly clear that this Forum is not associated with the ALPB (other than the owner also hosting the ALPB website).  So there is no “your ranks” here.  Part15.org and the ALPB are definitely two different entities, each with their own direction and agenda.

gamewell, you would be better served taking your comments over to the A…[Read more]

That may be the results from NEC.

However, I have seen dramatic range differences in raising a wire antenna of a Talking Sign 2 feet (everything else the same, power, audio cables, etc. etc.) so that it is above the roof line (prior to that it was below).

That can’t be attributed to added radiation from lengthened cables, as they weren’t…[Read more]

The statement that the FCC accepts the results of the NEC software for antenna systems of licensed stations is not relevant to this discussion.  It is what NEC does with Part 15 level signals, and their application in the real world (not a dream world, full of simplifying assumptions) that is in question.  That does NOT include ignoring o…[Read more]

I actually agree with Rich that the theoretical formulae behind the NEC simulations are valid for all power levels.

But, as usual, the devil is in the details.

The NEC software is an implementation of these formulae, and may or may not be accurate, based on a number of factors.

The software performs a progressive simulation, that is based on…[Read more]

And your point is … ?

I’ll wait for actual field strength measurements of Part 15 level signals, thank you very much.

The key sentence in the last post is “unobstructed path”.  I appreciate the difficulties of simulating the effects of obstructions, which is why some real world testing needs to be done, with careful note of obstructions, type (natural or man-made, construction materials for the latter), etc.

The actual hypothesis is that adding obstructions…[Read more]

Tim, some real world testing of your installation, both elevated and not, would be greatly appreciated.  It would certainly set the record straight, as it were, regarding obstructions and elevated installs.

There are obviously many factors for absolute range, and that’s why any statement that you will get ‘x’ feet or miles range has to be taken…[Read more]

I understand that, Mark.

There is synergy in the two posts here, though.

I also thought I (as well as others) answered some of the questions, as in an elevated transmitter install, there really is no difference between the ‘antenna’ and ‘ground lead’.  After all, in a dipole antenna, the other half of the antenna is essentially an elevated…[Read more]

I’m going to combine two replies – one for this thread and one for the ground lead vs antenna thread (it seems the latter never really goes away).

I don’t see any ambiguity in the Pirate Act, and in fact, any reason to be concerned (if you are operating legally), despite fears elsewhere.

A pirate is not someone who attempts to operate within…[Read more]

Ah, I see.

Posts in blogs show up in Recent Posts (on the right of the screen) ONCE you are in the Members section.

They do not show up in Recent Posts in the Forum.

I knew they showed up somewhere, as that’s how I found some problematic posts a while ago.

My mistake.  I’m not sure the Part15.org Blogs is what you want.

I would agree that the ALPB was not an activist group, in the formal sense.

But to be fair, portraying it as a social club, at least until recently (I really don’t know what it is now), is inaccurate and slightly unfair.

While it did not have a paying membership and a board, the ALPB did have an organizational structure, an elected Chairman,…[Read more]