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Post by Druid Hills Radio on Apr 10, 2017 18:20:55 GMT
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Post by Deleted on Apr 10, 2017 19:28:19 GMT
Interesting Thing About This Company
When Ramsey discontinued their line of kits they turned all inventory over to Amazon where I was getting set to purchase an FM30B transmitter marked down to $159.00.
Source beat me to it, buying up ALL of the Ramsey FM kits.
We see that the FM30b is available from Source for $200, which is the same price Ramsey asked.
We also notice the FM35BWT 1 Watt transmitter is there for $300.
Mighty fine if you ask me.
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Post by thelegacy on Apr 11, 2017 16:47:24 GMT
Hey the FM 100BWT would be cool cuz it has a variable output. Wo-Ho hope they copy the circuit and sell them assembled. This is great work on the part of Source FM.
Their 1.2 Watt with adjustable Pre Emphasis from 50uS to 75uS is a great start. But their SMA connector is something I bet is cheap and flimsy and I'll bet the moment I was to put an adapter on the connector to make it compatible with a PL-259 connector for my SWR meter it will break and you'll burn out that expensive transmitter. I've burnt out transmitters due to stuff like that.
I don't know who uses an SMA connector on a LPFM station. I thought the FCC required it to be on a 80 Ft tower? What were to happen of someone operated LPFM on a magnet mount antenna like the FMUser CA-200 which handles 100 Watts? The FCC would surly give them a NOUO for that cuz it is not a part 73 accepted antenna.
How did a rubber duck antenna ever get certified for LPFM? If that were true I'd apply for an LPFM license TODAY and be Legit!
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Post by Druid Hills Radio on Apr 11, 2017 17:04:43 GMT
"Their 1.2 Watt with adjustable Pre Emphasis from 50uS to 75uS is a great start. But their SMA connector is something I bet is cheap and flimsy and I'll bet the moment I was to put an adapter on the connector to make it compatible with a PL-259 connector for my SWR meter it will break and you'll burn out that expensive transmitter. I've burnt out transmitters due to stuff like that."DHR: They make pigtails SMA to N or SO-239. "I thought the FCC required it to be on a 80 Ft tower?"DHR: Where did you get that info from? "What were to happen of someone operated LPFM on a magnet mount antenna like the FMUser CA-200 which handles 100 Watts? The FCC would surly give them a NOUO for that cuz it is not a part 73 accepted antenna."DHR: Again, where do you get this stuff? Antennas do not get Part 73 "How did a rubber duck antenna ever get certified for LPFM?"DHR: I didn't. The transmitter did. |
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Post by thelegacy on Apr 18, 2017 16:13:40 GMT
OK so let me get this straight: I could apply for an LPFM license (assume the window is still open humor me) OK I get my CP and I say Sweet I'll just buy the 1.2 Watt TX. Now I can simply buy the CA-200 Magnet mount antenna and then put this on top of a PVC pipe with a cookie sheet that the antenna would stick to and fire away?
If it were that simple there would hardly be any Radio Pirates. Now that is my vision of what should happen here in the USA on 87.1-87.7 Mhz for community and Hobby Radio. But... The truth is that most stations I know of have their antenna up 80+ feet and operate at no less than 100 Watts (At least ERP). There is NO WAY you'd get 100 Watts ERP from a 1.2 Watt TX so again how the heck did this get certified?
There must be talk under the table at the FCC office for a future class that would allow such operation in the future. Look at this TX it is no way meant for a standard LPFM station with XLR cables coming out of a mixer. Its meant to be connected to a laptop or consumer grade mixer (Radio Shack) and using a compressor/limiter either software (NextKast, Stereo Tool) or something really cheap that uses the standard 1/8th inch jack. So our Hobby Radio service must be on its way to be passed. I'll be the first to apply for a legit license for legal operation on FM if that is the case. Please dear God let 87.1-87.9 be legal if not I can still use 100.1 Mhz (For Now).
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Post by Druid Hills Radio on Apr 19, 2017 12:44:21 GMT
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Post by Deleted on Apr 19, 2017 12:52:04 GMT
The LPFM Checklist
The document is very interesting, and perhaps someone can use it as a model for devising a Part 15 Station Checklist.
I call special attention to Page 14.
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Post by thelegacy on Apr 19, 2017 15:47:41 GMT
Hmmm the only thing that would be hard is the EAS requirements for one must use a certain type of equipment. However looking into the ERP power stuff as long as you have an ERP no less than 1 Watt you could technically be legal in certain installs with a tx OF 1.2 Watts.
I suppose one could use an adapter to go to an unbalanced 1/8th jack, but what would the sound quality be like compared to a more expensive TX? And what would an FCC inspector really think if they saw a LPFM station running that Source FM 1.2 Watt TX?
I'd have to study the whole thing but from what I know you just can't start an LPFM station without being a part of an association that is well known. However I wonder what The Lions Club would think? Honestly they are all for the Blind and it could be done to get things going for that community.
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