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 the repeater
that the sirens have been activated i monitor the frequency that
they activate the sirens on and the dtmf is very fast i am sure
different tone sequence has different meanings i just want an
announcement that the sirens were set off ,any thoughts ? "
Is
this siren operated by the EMA a tornado or other public
warning device, or is it fire siren or similar??
VY
73
Martin
Flynn
W2RWJ
On 5/26/2025 5:14 PM, Tom Cole wrote:
toggle quoted message
Show quoted text
?
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 emergency alert system has been activated. Cite and
quote verbatim your passages to the contrary. Many systems
automatically re broadcast the alerts from the NWS using the
SAME codes to key the transmitter. All that is required is
that the control operator can kill the transmission if
needed.?
Hint, 97:113 specifically allows what he is wanting to do.
Read it for comprehension, instead of with your normal bias.?
On May 26, 2025, at 3:56?PM, Chris
Boone WB5ITT via groups.io
<setxtelecom@...> wrote:
?
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
xmtr when it decodes..that is improper control of an
amateur station.
Chris
WB5ITT
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?
?
|
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 potential severe weather to warn them to protect their gear, would be direct interest to the amateur service.?
97.3 Definitions:
?
(26) Information bulletin. A message directed only to amateur operators consisting solely of subject matter of direct interest to the amateur service.
?
97.111 Authorized Transmissions:?
?
?
(6) Transmissions necessary to disseminate information bulletins.
Kory
toggle quoted message
Show quoted text
On 2025-05-26 16:56, Chris Boone WB5ITT via groups.io wrote:
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 xmtr when it decodes..that is improper control of an amateur station.
?
Chris
WB5ITT
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?
?
|
? 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 emergency alert system has been activated. Cite and quote verbatim your passages to the contrary. Many systems automatically re broadcast the alerts from the NWS using the SAME codes to key the transmitter. All that is required is that the control operator can kill the transmission if needed.?
Hint, 97:113 specifically allows what he is wanting to do. Read it for comprehension, instead of with your normal bias.?
toggle quoted message
Show quoted text
On May 26, 2025, at 3:56?PM, Chris Boone WB5ITT via groups.io <setxtelecom@...> wrote:
? 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 xmtr when it decodes..that is improper control of an amateur station.
Chris WB5ITT 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?
?
|
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 xmtr when it decodes..that is improper control of an amateur station.
Chris WB5ITT
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 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?
?
|
Re: Midland 91-1110 Basetech III intermittent receive
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.
?
Many T connectors have center pins not easily removed.? As suggested get Amphonel.? Need center pin that can be unscrewed replacing it with a screw.
?
73, ron, n9ee
|
If you can monitor the signal sent to the ema receiver. I would use something like a small sdr (rtl-sdr) with multimon-ng (?) that can run on a small raspberry?pi. If you find the good dtmf string you can monitor for it and then send a flag to the repeater, with whatever?method you can use with your repeater.?
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 activate the sirens on and the dtmf is very fast i am sure different tone sequence has different meanings i just want an announcement that the sirens were set off ,any thoughts ? Thanks?
|
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 if its known expect people to set off the sirens maliciously.
|
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 activate the sirens on and the dtmf is very fast i am sure different tone sequence has different meanings i just want an announcement that the sirens were set off ,any thoughts ? Thanks?
|
Re: VXR-9000 and Trident Raider
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. I don't know if that would make a difference.
?
I threw my test LTR user into CTCSS mode with a PL of 94.8 and it would fully key up the repeater but the transmit would drop out after a few seconds but keep the CARRIER and RECEIVE LED lit up, obviously it must not be liking the audio and data its receiving.
?
I know there's 3 jumpers to mess with but the manual doesn't say what each jumper does, hence why I haven't messed with them yet.
|
Re: VXR-9000 and Trident Raider
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 oscilloscope and service monitor, should help you figure things out.
The Vertex radio needs to pass raw discriminator to the controller which handles the decoding, so set the Vertex radio to operate as a full duplex base (non-repeating) and operate in carrier squelch mode. Once you get the controller happy as far as receiving, then set the transmit including the polarity of the data word if using DPL or LTR formats. Also there were different versions of firmware for the controller. If you intend to use the Raider in LTR mode or to decode DPL, the controller needs to see the undistorted data essentially down to DC. If you are only decoding PL tones then you can tolerate a bit of low frequency roll off since the lowest PL tone is 67Hz.
Trident is no longer in business so you are somewhat on your own.
Personally I was never really impressed with the way the Raider handled repeated audio, especially in LTR format.
Milt
N3LTQ
Quoting "Jared Smudde via groups.io" <computerwhiz02@...>:
toggle quoted message
Show quoted text
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 tried messing with the dipswitch with no luck but I have no idea if I need to remove any jumpers or not, there's nothing about Vertex repeaters being used on Trident controllers. I've gone through and aligned both the repeater and controller.
|
Re: VXR-9000 and Trident Raider
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 related or if the VXR9000 has the same issue but wanted to mention it for consideration. Might explain why you're seeing carrier detect but no RX indicator.?
Jeremy K1LFK?
On Mon, May 26, 2025, 3:22?AM Jared Smudde via <computerwhiz02= [email protected]> wrote: 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 tried messing with the dipswitch with no luck but I have no idea if I need to remove any jumpers or not, there's nothing about Vertex repeaters being used on Trident controllers. I've gone through and aligned both the repeater and controller.
|
VXR-9000 and Trident Raider
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 tried messing with the dipswitch with no luck but I have no idea if I need to remove any jumpers or not, there's nothing about Vertex repeaters being used on Trident controllers. I've gone through and aligned both the repeater and controller.
|
Re: Desense is driving me crazy
Jim was very soft spoken and very kind and friendly. I would have been there at the desk beside his.?
|
Re: Desense is driving me crazy
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 small meeting room whereby he commenced to give me a detailed tutorial on the Q201 duplexer complete with some graphs that he hand drew as I watched. We also talked about the 210 Series of antennas and he gave me some "shop" drawings on the construction of the loop, and some documents watermarked "Training Docs". I still have all these documents today.
At the end, he told me that because of Sinclair's somewhat unique order and billing system -that could not accept a point-of-sale entry- he would be unable to sell me the rods...so "I'll just have to give them to you". Jim was quite welcoming and our meeting was not at all rushed.
Larry
On Sun, May 25, 2025 at 5:08?PM Harold Farrenkopf via <hfarrenkopf= [email protected]> wrote: ¡°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 if that's true or not but it sounded nice.¡°
?
That was the past¡.? Dr. George Sinclair was a ham .? I was there 1988 to 1991 and 2000 to 2001.? I returned the second time and was given verbal assurance and promises that I could continue doing my own consulting on the side but when I did, they didn¡¯t like it and I got let go (with adequate severance). They lost their ham friendly attitude when the hams left and when the company was sold. I know I helped many hams during my time and they used to get 25% off list prices.?
They replaced me (a professional engineer) with someone taking some online Phoenix courses in electronics that said he¡¯d be an engineer but he never completed it but continued on in that role. He also called himself an engineer which is illegal in Canada. ?
Things really changed there when George died in the ?mid 90s.?
Jim Morrison was also a great asset to hams. I bought my first duplexer from him in 1983 at a local ham flea market.? He taught me everything I know about filters when I started there¡.
|
Re: Desense is driving me crazy
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 would post them. It was a while back but I know I put them out here. ?
73
?
Kevin?
|
Re: Desense is driving me crazy
¡°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 if that's true or not but it sounded nice.¡°
?
That was the past¡. ?Dr. George Sinclair was a ham . ?I was there 1988 to 1991 and 2000 to 2001. ?I returned the second time and was given verbal assurance and promises that I could continue doing my own consulting on the side but when I did, they didn¡¯t like it and I got let go (with adequate severance). They lost their ham friendly attitude when the hams left and when the company was sold. I know I helped many hams during my time and they used to get 25% off list prices.?
They replaced me (a professional engineer) with someone taking some online Phoenix courses in electronics that said he¡¯d be an engineer but he never completed it but continued on in that role. He also called himself an engineer which is illegal in Canada. ?
Things really changed there when George died in the ?mid 90s.?
Jim Morrison was also a great asset to hams. I bought my first duplexer from him in 1983 at a local ham flea market. ?He taught me everything I know about filters when I started there¡.
|
Re: Desense is driving me crazy
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 band is filtered out. The other 4 cans tuned as a 4 can duplexer with 0.7dB insertion loss per can.?
|
Re: Desense is driving me crazy
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 RG-223 better.
For the Q202, the high split harness with not tune up correctly.?
At this point, I would eliminate the well known TX additional noise floor of that repeater by using a different repeater.??? You could also try a bandpass only cavity after the TX.?? A BPBR will not work, it must be BP only.?? The cable length is critical for a good match, but at least you can see if it helps the problem.?? Jeff could probably give you the correct jumper length if he has the cavity information, if you end up going that direction.
John?
toggle quoted message
Show quoted text
On 2025-05-25 17:58, N4FOX via groups.io wrote:
Al,
Thanks for the thought about that.
I covered that in one of my earlier post. I replaced those cables with RG400 a while back.?
?
|
Chris Boone WB5ITT
Pierre Martel
Jared Smudde