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John Sees replied to the topic Designing the Perfect Part 15 Transmitter in the forum Transmitter Talk 3 years, 7 months ago
Well, these things are options: solar power, C-Quam, metering, remote controls and all that stuff. It would be nice to have our transmitter as modular as we can. Not everyone wants the same thing – other than the best range and the best sound. I think we all want that.
In my case, I’d still like a rack-mount transmitter control panel, but with…[Read more]
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John Sees replied to the topic Designing the Perfect Part 15 Transmitter in the forum Transmitter Talk 3 years, 7 months ago
Well, that sounds easy enough. I was thinking solar because I think the best place for my tower would be at the back of the property and I wouldn’t have to run a power line back there. Indeed, with a good battery, something like you have should work fine.
Thanks for telling us about it.
John
W9LWA
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John Sees replied to the topic Designing the Perfect Part 15 Transmitter in the forum Transmitter Talk 3 years, 7 months ago
Thanks for the comments, Legacy.
Wouldn’t any transmitter work with a solar array? I wonder how much an array would cost to power a 100 mw transmitter? It couldn’t be that much, could it? I wouldn’t mind using solar power just for the novelty of it.
I’m not concerned about audio cables radiating. Or anything else that isn’t a ground lead,…[Read more]
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John Sees replied to the topic Designing the Perfect Part 15 Transmitter in the forum Transmitter Talk 3 years, 7 months ago
What do you think we’d have to do to get your transmitter and antenna designs on a tower? Is C-Quam an option? It seems important to some folks here.
Either way, I think you’re onto something here…
John
W9LWA
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John Sees replied to the topic ISS Range Extender in the forum Antennas 3 years, 7 months ago
Well Legend, I think I’ve figured out everything I wanted to know about the grounding of the range extender, anyway. What I’d really like to know is if you have yours operating yet and if so, how does it sound and what kind of range are you getting?
Thanks,
John
W9LWA
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John Sees replied to the topic ISS Range Extender in the forum Antennas 3 years, 7 months ago
Indeed, that’s how they’re getting away with it.
Thanks
John
W9LWA
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John Sees replied to the topic ISS Range Extender in the forum Antennas 3 years, 7 months ago
Thanks for your comment, Rich.
So, does that mean:
1. The TH is actually sending RF up that coax and getting another 25 feet of antenna+lead; and,
2. Another 25 feet of ground through the coax braid?
John
W9LWA
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John Sees replied to the topic ISS Range Extender in the forum Antennas 3 years, 7 months ago
Thanks, Artisan. That sounds right to me.
John
W9LWA
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John Sees replied to the topic ISS Range Extender in the forum Antennas 3 years, 7 months ago
Well, yes. I think that is what he was trying to tell me and no, it didn’t make sense to me either.
Thanks for your comments.
John
W9LWA
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John Sees replied to the topic ISS Range Extender in the forum Antennas 3 years, 7 months ago
I’m assuming the RG6 braid attaches to the chassis at the transmitter end and the chassis at the range extender in the common fashion for coax through connecters. There isn’t any reason this would be different, is there?
I’ll admit I haven’t quite figured out how this got certified, but a local know-it-all (worse than me, even) is spinning a tale…[Read more]
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John Sees replied to the topic Designing the Perfect Part 15 Transmitter in the forum Transmitter Talk 3 years, 7 months ago
Well, I do agree that the transmitter should sound really good. Not just kind of good, but really good. I don’t think that’s mutually exclusive with having the highest possible output in pursuit of the best range. I’m ok with stereo, although I suppose that rules out the Rangemaster and Procaster which everyone seems to tell me are otherwise the…[Read more]
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John Sees replied to the topic Designing the Perfect Part 15 Transmitter in the forum Transmitter Talk 3 years, 7 months ago
Thanks for the comments. They sound about right to me. Here are a few things I might throw in, be them right or wrong:
1. Regarding processing, I do have an ART Pro MPA II 2-channel Tube Microphone Preamp and the matching Pro-VLA II 2-channel Opto Tube Leveling Amplifier. I’m not even sure what all these things do, but I got them for virtually…[Read more]
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John Sees replied to the topic Designing the Perfect Part 15 Transmitter in the forum Transmitter Talk 3 years, 7 months ago
I guess at this point, this is what I’m thinking, so far, regarding John’s better than average transmitter:
1. Transmitter belongs outside on top of the tower.
2. Controls, meters and the better-than-average power supply will be rack mounted, although that is not a necessity. John knows where to get professionally made front panel so it will…[Read more]
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John Sees replied to the topic Designing the Perfect Part 15 Transmitter in the forum Transmitter Talk 3 years, 7 months ago
So, C-Quam is pretty important to have for a transmitter to be top of the line? I’m familiar with it of course, but must admit around here in Indiana I’ve never heard anyone speak of it.
But, would there be any downside to having it on the transmitter?
John
W9LWA
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John Sees replied to the topic Designing the Perfect Part 15 Transmitter in the forum Transmitter Talk 3 years, 7 months ago
Well, perhaps it could be modular with different options such as processing on separate boards that could be included or not as the operator desired?
John
W9LWA
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John Sees replied to the topic Designing the Perfect Part 15 Transmitter in the forum Transmitter Talk 3 years, 7 months ago
Thanks for commenting. If we come up with something that really is an improvement, I would indeed be willing to get the FCC approvals and get it put into production as I’ve been involved in manufacturing before. But, it wouldn’t have to be just me, if others want to be involved.
John
W9LWA
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John Sees replied to the topic Designing the Perfect Part 15 Transmitter in the forum Transmitter Talk 3 years, 7 months ago
Well, there is certainly a difference between needs and wants. I don’t need meters but I like and want them. I don’t need any part of the transmitting apparatus to be rack mounted but I want that. It’s a place to put the meters, if nothing else. I think this topic from my perspective is a lot more about wants than needs.
I’m good with having the…[Read more]
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John Sees replied to the topic Designing the Perfect Part 15 Transmitter in the forum Transmitter Talk 3 years, 7 months ago
Hello Neil,
Thank you for very good comments. I also hope others will join in. I’d especially like to know what kind of metering we can reasonably have. I’m of the age that I started out reading the meters and logging the results every 30 minutes. I probably didn’t appreciate doing it at the time, but at least I knew if the transmitter was…[Read more]
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John Sees started the topic Designing the Perfect Part 15 Transmitter in the forum Transmitter Talk 3 years, 7 months ago
Ok, I’m going to get over my head pretty quickly here, but I’m wondering what features a Part 15 AM transmitter would have if we could design it with everything we like. This may be another of those things nobody wants to participate in but me, but here’s what I think for starters, anyway:
1. I like rack mount equipment for organizational…[Read more]
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John Sees replied to the topic ISS Range Extender in the forum Antennas 3 years, 7 months ago
Good post. Especially enjoy your comments regarding Part 15 technology. Are you aware if any of the current transmitters actually getting 100 mw output? I’d heard about the most was around 60 mw out, be that right or wrong. Agree about antennas. I think there’s room for something more efficient.
I’m waiting to hear results of what kind of range…[Read more]
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