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Tom, I had to go back and read the original post, and have a question for the OP: "i am looking for a dtmf decoder to connect to a receiver to decode our local EMA whelen siren to give a message on

Chris, Wouldn't sending out a storm warning bulletin be legal and fall under the following? I say this with the thoughts of a simple message or even one with a little more detail, warning Hams of

?Chris, You love to say something is illegal with nothing to back it up. You most certainly can automatically re broadcast emergency information, or in this case, broadcast a message that the

Having any announcement, etc on the repeater output automatically from the Wheelan siren system is not allowed under Part 97.....You COULD change CT or something similar but it cannot key the repeater

Thanks Mike i know the frequency they use i have not told any one i will not transmit the tones just operate a relay when the tones are decoded they will not go out over the air

Thanks Chris, I'll try to make a call and see if I can get to him.? I looked on LinkedIn, hoping I could find him there, but no luck. ron KA3JIJ

One comment, on the cable from the sig gen to the iso-T there should be a 50 Ohm load at the T to make the sig gen happy, feeding a good load, just don't feed the T will open coaxial cable at the T.

If you can monitor the signal sent to the ema receiver. I would use something like a small sdr (rtl-sdr) with multimon-ng ( https://github.com/EliasOenal/multimon-ng) that can run on a small raspberry

DTMF decoders are easy and I have several made by Motron that store and read out the DTMF sequence. However, the RF frequency and codes for setting off community sirens is not public information and

i am looking for a dtmf decoder to connect to a receiver to decode our local ema whelen siren to give a message on the repeater that the sirens have been activated i monitor the frequency that they

I'm pulling the discriminator audio off the VXR-9000 from PIN 6 which the manual states is 0-3000 Hz Analog output.? There's also an PIN 23 RXD HIGH that?is a Digital Output for DATA Communications.

The Raider documentation has multiple examples of how to set up the controller with various radios. Spending some time looking at these and documentation on the Vertex radio, along with an

Jared, Which device is handling the CTCSS? I know the VXR7000 only passes COR and requires modification (tapping a transistor on the VXR controller board) to provide COR with CTCSS. Not sure if it's

Has anyone had experience with a VXR-9000 and a Trident Raider LTR controller? I've got the carrier light on whenever I try to key up but I can't get the receive light to come on and handshake. I've

Jim was very soft spoken and very kind and friendly. I would have been there at the desk beside his.

Interesting anecdote, Harold...I met Jim at Sinc. in Aurora in 1990. I was visiting the area and decided to drop in to see if I could buy 4 invar rods. The front desk paged Jim and he took me to a

Do some searching in this forum and you should find a post from me that shows the Sinclair part numbers for the proper harnesses for these duplexers. ?I am sitting in the car conducting a net or I

“Whats odd is I've heard several stories about how Hams have got help from Sinclair & they were happy to help out. One fella told me he talked to a Mr. Sinclair about some duplexers years back. Idk

Q cavity works just as well as a pass can. I’ve tuned 6 can Q duplexers so that the can closest to the equipment is a symmetrical notch to give it a good pass response so other stuff outside the ham

I made several kits at the shop for the internal desense problem. Due to the cable routing, I used RG-223. It is more flexible than RG-400. Electrically, either one would work, but I liked the lay of