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Author Topic: Radio Systems i A.M. Radio Transmitter Review  (Read 381 times)
Bill DeFelice
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« on: October 14, 2009, 03:57:12 PM »

It is my pleasure to announce the completion of both written and video reviews of the Radio Systems i A.M. Radio Part 15 certified AM Transmitter.

Audio quality when fed from the external line input and quicker auto-tuning are just a couple of the notable improvements that have been made to the former Talking House transmitter. The written product review is available on HobbyBroadcaster.net and the companion video is available on the HobbyBroadcaster.net YouTube Channel.
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HobbyBroadcaster.net
The references for legal low-power license free broadcasting under FCC Part 15 regulations.
Legal & technical references, equipment reviews, how-to's and more!
Alan McCall
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« Reply #1 on: October 15, 2009, 10:48:01 PM »


That's an interesting review, Bill. Thank you for sharing!

Looks like it might make for a great backup xmitter.
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Bongwater
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The Shadow Lord Of NW Radio.......


« Reply #2 on: October 16, 2009, 03:32:54 AM »


That's an interesting review, Bill. Thank you for sharing!

Looks like it might make for a great backup xmitter.

I am definitely buying one.....looks like The New 600 AM is on it's way.......
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Bill DeFelice
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« Reply #3 on: October 16, 2009, 06:19:18 PM »

Radio Systems is really committed to moving ahead with the i A.M. Radio transmitters with some planned improvements and an added focus on low power broadcasting. I actually have an appointment to meet with their company president next week so I'm really excited on the possibilities for this transmitter.

When I was testing the unit and listening over the modulation monitor the new transmitter sounds almost like FM. The difference really floored me! They have improved the audio on the new model and I know they are looking at making more improvements.
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HobbyBroadcaster.net
The references for legal low-power license free broadcasting under FCC Part 15 regulations.
Legal & technical references, equipment reviews, how-to's and more!
audioguy
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« Reply #4 on: October 16, 2009, 07:27:15 PM »

This is very cool Bill! Thanks for sharing! I plan to visit their web site and see if they have any downloadable literature.
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Alan McCall
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« Reply #5 on: October 17, 2009, 01:07:40 PM »


The more I look at this unit, the more I wonder what its performance/range would be in a more rural setting.

My signal on 1610 is getting clobbered and there aren't many other expanded band choices..but they are all out of town sgnals on those frequencies. There are a few lower band frequencies that are clear here.
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« Reply #6 on: October 17, 2009, 09:44:32 PM »

Where I live, the expanded band is becoming unusable, especially after dark. Even during the day it's not that great, due to the proliferation of "Travelers' Information Stations" and IBOC hash. The low end of the dial is much cleaner overall, but the problem is that the efficiency is very poor with such a short antenna.

I do have access to a rural location during the summer months, where at least during the daytime, excellent results are possible at the high end of the dial. I would like to see what Radio Systems recommends for a ground system when using their outside antenna tuning unit.
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Bill DeFelice
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« Reply #7 on: October 18, 2009, 07:25:20 AM »


The more I look at this unit, the more I wonder what its performance/range would be in a more rural setting.

My signal on 1610 is getting clobbered and there aren't many other expanded band choices..but they are all out of town sgnals on those frequencies. There are a few lower band frequencies that are clear here.

I may have to move things back to the original test location and do some detective work. In our rural location our tests actually showed the this units slightly outperforming the Rangemaster under the same conditions. Of course the test frequencies for all of these was 1630 KHz which is clear in our location during the day. It would be interesting to try a lower band test since the i A.M. Radio transmitter tunes it easily.
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HobbyBroadcaster.net
The references for legal low-power license free broadcasting under FCC Part 15 regulations.
Legal & technical references, equipment reviews, how-to's and more!
edarmsttrong
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« Reply #8 on: October 18, 2009, 11:23:45 AM »

The i A.M. looks like a repackaged 'Talking House' transmitter...does it have the same specs?
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"Modulating carriers since 1987"
Bill DeFelice
Computer & Broadcast Technologist
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Past engineer of WMNR-FM, WMMM/WCFS-AM, WREF, WEBE


« Reply #9 on: October 18, 2009, 11:50:14 AM »

The i A.M. looks like a repackaged 'Talking House' transmitter...does it have the same specs?

Similar for RF output, the audio has been vastly improved - why not check out the video review with audio demo?
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HobbyBroadcaster.net
The references for legal low-power license free broadcasting under FCC Part 15 regulations.
Legal & technical references, equipment reviews, how-to's and more!
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