Drive test of Part 15 AM transmitting under fair conditions. Home AM transmitter in Sioux Falls

Here you see how our system sounds on the road. (Part 15 legal transmitter from www.trutham.com) In the winter your peak transmitting window is limited but you see here late in the afternoon our unit breaks through the noise. Early morning and noon it's absolutely excellent. Summers in northern climates would be great as we have sunlight past 9PM in some areas.
Southern states would have best all day coverage especially where the soil is excellent. (non-sandy high conductivity)
This test shows driving around two seperate units. Other transmitters - both kits and certified units (theres only one other certified one) wouldnt even have 1/2 the range the Rangemaster does. The difference is in the crystal control and the quality of the parts. Also these can be synchronized which works well.

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[truthallegory]

Hey Zap. I've spoken with Mr. Hamilton of Rangemaster. Going to order multiple antennas and go your route. Hired an engineer to link them. He's been in radio over 23 years. Appreciate it all. Tried u weeks ago, couldn't catch u. I understand. Caution is best, I suppose. Will post my own video/field test soon. Gonna use 4 units linked via Cat 5. Be well. Thanks again.

[zappatx]

@truthallegory Im here - just very busy. I dont do the radio thing anymore but may start back up with some local support. It was very time consuming! The Cat 5 is not recommended but OK if it's UV protected and has a ground wire/shield. Needs to be minimum #20 wire.

[truthallegory]

Thanks for the info, zappatx. Did you say 10mhz GPS clocks will make this concept work? Wow. I never heard of that! I'm going to look that up. Oh, I'm going to use 4 i.am.radio units in my area. Which transmitters are you guys using? Thanks a ton, sir. Appreciate it all.

[zappatx]

@truthallegory These 10MHZ clocks as far as I know only work with the Rangemaster. That is the only unit I would use and the only one which is FCC approved which allows for external processing and full modulation. I've been running music through them lately and the sound is so much better than the commercial AM stations but it takes a long time to get the modulation and audio just right. My 5 transmitter array you could hear up to 10 miles away. It's no longer in Sioux Falls but in another city.

[truthallegory]

You've gotta tell me, what method you're using to sync your audio! I am installing four transmitters in my region next month and am considering linking them via microwave units. Are your transmitters Rangemasters? Please let me know.

-Ed

[zappatx]

@truthallegory Microwave works as does GPS but I just had them cabled together 5 on one roof then two at one location.. They were not synched so at night they sounded terrible but at day they were fine - only a slight echo. Now the GPS technology is cheap and easy. There are a lot of GPS 10MHZ standard clocks available which is all you need to make this work.

[zappatx]

There is no distance rule for part 15.219. We have many of these out there and the Agent often will call to see if we sold a unit to someone so they can save the gas as they know the Rangemaster wont interfere. Ive been doing this a long time and your comments have no merit. You never see these on ebay bubba!!

[zeo285]

in the first 3 min it looked just like my town!

and when i can save up enugh it will sound just like my town.

[1610WCHX]

It's amazing how far a tenth of a watt will go. My buddy and I would like to start a part 15 AM operation on 1610khz in the Cincinnati area, but we gotta get enough cash to do it. Currently we're broadcasting to our neighbors on 106.3 FM using an mp3 transmitter. We need much more range. 200 feet is like one house.

[truthallegory]

Duly noted, Zap, thanks. Good to hear you're still around. Hopefully you'll get back up and running. It's in my blood (Radio). Been GM of an AM and FM station for 13 years, before securing a minority interest as owner too. Now, I'm doing the part 15 thing. Feels good being 100% in charge. Station will geared towards a specific demographic and will be commercially based. I will keep you posted as far as how it goes, sales, signal strength etc. Thanks again, sir.

[truthallegory]

Hey zap, you still out there? had a couple more questions for you. appreciate any help you can provide.

-Ed

[truthallegory]

Hey zappatx, are u actually sending music/audio via the GPS clock? Or, is it primarily used for syncing methods? I spoke with an engineer working on my set up who agrees that we can sync my separate antennas this way, but, he questioned whether or not we can send audio via this method. Told him about yours. Tell me more about your 5 antenna set up? are they side by side. I ask because I think your range is awesome! Heck I might just align mine that way, forget spacing them miles apart.

[truthallegory]

Oh, and there's nothing illegal about this guy's set up. It is very possible to broadcast via the means he describes as a Part 15 operator and have signal range of 1-1/2, even 2 miles radius. FCC doesn't say that an AM signal must not exceed 200ft from its transmitter. It only restricts the length of the ground/lead, and he must use an FCC approved transmitter, blah, blah, blah. Part 15 FM operators are limited to 200ft of broadcast range. FYI