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Messages - JimIO

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The RF Workbench / Re: Transmitter set up
« on: January 14, 2020, 2352 UTC »
Go Bluetooth, no wires. But it depends on many things. Where do you want to operate from. A home or mobile. When do you want to operate,24/7, evenings/weekends, holidays? Who is your target? FM is the mode/band of choice for most pirates.


General Radio Discussion / Re: Pirate Act Passes Senate
« on: January 12, 2020, 0117 UTC »
Nothing new on the FCC NOUO web page in over 3 months...    8)


I'm OK with kids playing on the lawn...    8)



Group W Bench / Re: Pirate Act Passes Senate
« on: January 09, 2020, 2324 UTC »
"The NAB is lining their pockets"

Putin and the NRA    8)



With all of the tutorials and libraries and sample code out there 90% of what
you want to do is already done. Who would have thought microcontrollers
would end up being cheep fun.



If you really want user programmable do a search for: arduino cw beacon


Huh? / Re: Red Ukrainian Borscht
« on: January 02, 2020, 0355 UTC »
"Ohhh I get it, it's "red" as in colour and not "red" as in commanismses."


Check out the CFO...    8)


"The software runs on both Windows and macOS."

We got both kinds, country and western.    ;D





General Radio Discussion / Re: WGCH (Greenwich, CT) Off AM Signal
« on: January 01, 2020, 0252 UTC »
"In the words of the great fishface I mean Rahm Emmanuel, never let a good crisis go to waste!"

Why wait for a crisis when you can pick up a phone and make one.



Huh? / Re: Red Ukrainian Borscht
« on: January 01, 2020, 0206 UTC »
Sounds delicious, but coring a cabbage and getting tomato paste out of a can is way too much work!    8)


I made a post a little earlier but its not here. Must have been a wifi dropout.
Anyway, I'm going to just screw the RG6 to the F to BNC adapter and be done.

I want to make a coaxial colinear antenna out of RG6. What's a simple cheap and strong way to do the shield to center conductor cross over connections?


I know there are other ways to do it.  I have the coax and F connectors and tools.
I have F chassis connectors and RG58. I could make it with that but I would need something to mount those to and drill holes and solder. If I can get the proper coax I can make what I need in less time than it takes a soldering iron to heat up.
The transmitter will put out 5 watts or 15 watts. What do you think about using just 75 ohm coax at 5 watts?


The RF Workbench / 50 to 75 ohm 1/12 wavelength coaxial transformer
« on: December 23, 2019, 2156 UTC »
I have a VHF FM transmitter with a 50 ohm output. I want to make a 50 to 75 ohm 1/12 wavelength coaxial transformer so I can use 75 ohm coax to connect it to an antenna. I want to use F type compression connectors to join the coax sections together. I need some 50 ohm coax with most of the dimensions of RG6 (except the O.D. of the center conductor). Looking around I see RG5 and maybe LMR300. Looking some more I can't find a source for small quantities of either one. Does anyone know if LMR300 would be compatible wit F compression connectors and a source for RG5 or LMR300 by the foot?


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