Spacing and Interference study for LPFM

[fl-lpfm]

Hello,

Im in need of an engineer that can create a spacing and interference study for my lpfm station. I've been trying to get in contact with prometheus but they have been so busy lately and no one has gotten back to me. Any recommendations?

 

[OKCRadioGuy]

There are several good ones out there. Bromo Communications and Cavell and Mertz are two that I have been very pleased with.

 

[Shiny Knob]

Also, Mike Brown is excellent. He prefers to work with noncommercial broadcasters and is less expensive than the name brands.

http://www.brownbroadcast.com/

 

[TomT]

Not difficult at all. PM me with your info & I'll show you how.

 

[WNTIRadio]

It's not too hard to do yourself if you're a bit computer savvy and have a mind for radio.

That said, if it's a complicated situation I recommend Clarence Beverage over at Communications Technologies.

 

[Kmagrill]

Add to the list: Barry Magrill, PE. He does a lot of work for LPFM and non-com stations. Very modestly priced. [email protected].

 

[fl-lpfm]

Thank you all for the great input. I will look into this.

 

[radiomaps]

See example: http://www.radiodataservices.com/Channel%20221%20(92.1%20MHz).jpg

$250 entire 100 channel study based on very specific parameters. Then $1250 for the complete application and FCC filing.

I can search the entire FM band 201 to 300 for a 20-mile radius evaluating all options including 2nd adjacent channel waiver potential based on any antenna height, a specific number of antenna bays, a vertical and horizontal clearance of the "interference bubble" and considering the 60 dBu coverage range limits of 4.7 km (minimum) to 5.6 km (maximum). You get a map for each of the 100 channels showing "green" areas where an LPFM can go based on the above parameters that you choose. For instance, using a higher antenna (say 100 meters) and going with the minimum coverage of 4.7 km means an ERP of 4.3 watts and using a 4-bay antenna will provide a much greater chance at a 2nd adjacent channel waiver opportunity. See the attached map: http://www.radiodataservices.com/Channel%20221%20(92.1%20MHz).jpg

We can give you the best chance of locating a difficult-to-find channel in an urban or spectrum-limited market.
www.radiodataservices.com
E-MAIL: [email protected]
(305) 234-9309

 

[Shiny Knob]

And now, here's Bob with Sports.