Re: Flat Audio - Motorola
He did say "the "flat audio" check box enabled in the RSS software.".
Mick - W7CAT
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----- Original Message ----- From: "wj9jrg via groups.io" To: [email protected]Sent: Wednesday, May 21, 2025 11:00:47 AM Subject: Re: [repeater-builder] Flat Audio - Motorola You have to change it in CPS. Show the screenshots from CPS, then we can
help.
Thanks
Andy
WJ9J
On Wed, May 21, 2025 at 12:39?PM AA7CL via groups.io > [email protected]> wrote:
Good Day All,
Just reaching out to see if anyone has had any issues with Motorola
RKR1225 repeaters not producing flat audio on pin 11 of the
accessory port with the "flat audio" check box enabled in the RSS software.
We have 9 of these repeaters and due to audio quality issues, I
want to switch the repeaters and links to flat audio. I have struggled with
emphasis and de-emphasis filter paths. Some in the controller, some
are enabled/disabled in the radios themselves. I have tried to
eliminate it all by going flat audio. However, the audio links from some of the
sites are still muddy.
Using a backup repeater I have, I started investigating the issue.
I have eliminated the de-emph filters on the controller and enabled flat
audio in the RKR and Astro Spectra (used for the links) for both TX/RX.
However, on the RKR1225, injecting a signal set for 3KHz deviation to the
receiver, and varying the tone, the audio level coming from pin 11 on the RKR1225
is 4V PP at .600KHz and 650mV PP at 3KHz. Seems to be a lot of roll off
at higher freqs. I would expect the opposite?? Switching back to "EIA" in the
RKR doesn't seem to change anything. Again, I'm checking the level
right at pin 11 - no controllers in line. Is this some impedance issue? Perhaps a
switching issue inside the RKR1225? Today, going to check the output
impedance spec and see if I can load it to see what difference it
makes. May try another RKR1225 also.
I've confirmed the modulation of the SM is flat across those
frequencies.
Thoughts and ideas are appreciated!
Jim
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Re: Flat Audio - Motorola
You have to change it in CPS.?? Show the screenshots from CPS, then we can help.
Thanks
Andy WJ9J
Good Day All,
?
Just reaching out to see if anyone has had any issues with Motorola RKR1225 repeaters not producing flat audio on pin 11 of the accessory port with the "flat audio" check box enabled in the RSS software.
?
We have 9 of these repeaters and due to audio quality issues, I want to switch the repeaters and links to flat audio. I have struggled with emphasis and de-emphasis filter paths. Some in the controller, some are enabled/disabled in the radios themselves.? I have tried to eliminate it all by going flat audio. However, the audio links from some of the sites are still muddy.
?
Using a backup repeater I have, I started investigating the issue. I have eliminated the de-emph filters on the controller and enabled flat audio in the RKR and Astro Spectra (used for the links) for both TX/RX. However, on the RKR1225, injecting a signal set for 3KHz deviation to the receiver, and varying the tone, the audio level coming from pin 11 on the RKR1225 is 4V PP at .600KHz and 650mV PP at 3KHz. Seems to be a lot of roll off at higher freqs. I would expect the opposite?? Switching back to "EIA" in the RKR doesn't seem to change anything. Again, I'm checking the level right at pin 11 - no controllers in line. Is this some impedance issue? Perhaps a switching issue inside the RKR1225? Today, going to check the output impedance spec and see if I can load it to see what difference it makes. May try another RKR1225 also.
?
I've confirmed the modulation of the SM is flat across those frequencies.
?
Thoughts and ideas are appreciated!
?
Jim
|
Good Day All,
?
Just reaching out to see if anyone has had any issues with Motorola RKR1225 repeaters not producing flat audio on pin 11 of the accessory port with the "flat audio" check box enabled in the RSS software.
?
We have 9 of these repeaters and due to audio quality issues, I want to switch the repeaters and links to flat audio. I have struggled with emphasis and de-emphasis filter paths. Some in the controller, some are enabled/disabled in the radios themselves.? I have tried to eliminate it all by going flat audio. However, the audio links from some of the sites are still muddy.
?
Using a backup repeater I have, I started investigating the issue. I have eliminated the de-emph filters on the controller and enabled flat audio in the RKR and Astro Spectra (used for the links) for both TX/RX. However, on the RKR1225, injecting a signal set for 3KHz deviation to the receiver, and varying the tone, the audio level coming from pin 11 on the RKR1225 is 4V PP at .600KHz and 650mV PP at 3KHz. Seems to be a lot of roll off at higher freqs. I would expect the opposite?? Switching back to "EIA" in the RKR doesn't seem to change anything. Again, I'm checking the level right at pin 11 - no controllers in line. Is this some impedance issue? Perhaps a switching issue inside the RKR1225? Today, going to check the output impedance spec and see if I can load it to see what difference it makes. May try another RKR1225 also.
?
I've confirmed the modulation of the SM is flat across those frequencies.
?
Thoughts and ideas are appreciated!
?
Jim
|
Re: DB-224-E antenna sources?
Ya I had seen that one and it was tempting, 6-7 hour drive for me.
Kory
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On 2025-05-21 11:27, W?SVH via groups.io wrote:
If your near Kentucky, there is one listed on Fleabay.
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micor mobile / GE Mastr II Mobile wanted
All,
I am looking for 1-2 Micor Mobiles and/or 1-2 GE Mastr II mobiles potentioally a station if the price is right and its close etc.
I am looking for 100-110w radios, on UHF 450-470mhz.? Please email me offlist at dwisdom@...
Thanks
--Don
KD7WKF
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Re: DB-224-E antenna sources?
If your near Kentucky, there is one listed on Fleabay.
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Repeaterbuilder has the diagrams for other cables. Can't you use that schematic? or do you need the pinout of the mike connector?
Joe. K1ike
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On 5/21/2025 10:51 AM, Chris Boone WB5ITT via groups.io wrote: Due to my former company keeping my Kenwood programming cables, I'm kind of stuck right now. I've got two tk790s I need to reprogram the frequencies and I know that front panel programming won't allow me to do that. I've got an old microphone with the connector and want to make up my own programming kpg 43 but I can't find the schematic anywhere. Don't be a smart ass and tell me to go buy one, as some people have previously done in other post. I don't have time! I know transmit and receive data is carried on one pin but how do you interface that to a FTDI? Resistors or is a xstr needed? I have searched everywhere and can't find the damn schematic for this thing. I know I used to have it but I lost it on an old hard drive.
TIA
Chris WB5ITT
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That's it!! Tnx John!!
Chris WB5ITT?
Chris, I think that Rob Riggs had something here
On Wed, May 21, 2025 at 2:52?PM Chris Boone WB5ITT via <setxtelecom= [email protected]> wrote: Due to my former company keeping my Kenwood programming cables, I'm kind of stuck right now. I've got two tk790s I need to reprogram the frequencies and I know that front panel programming won't allow me to do that. I've got an old microphone with the connector and want to make up my own programming kpg 43 but I can't find the schematic anywhere. Don't be a smart ass and tell me to go buy one, as some people have previously done in other post. I don't have time! I know transmit and receive data is carried on one pin but how do you interface that to a FTDI? Resistors or is a xstr needed? I have searched everywhere and can't find the damn schematic for this thing. I know I used to have it but I lost it on an old hard drive.
?
TIA
Chris WB5ITT?
--
John Kreno
The line separating good and evil passes not through states, nor between classes, nor between political parties either¡ªbut right through every human heart¡ªand through all human hearts. This line shifts. Inside us, it oscillates with the years. And even within hearts overwhelmed by evil, one small bridgehead of good is retained. And even in the best of all hearts, there remains ¡ an unuprooted small corner of evil. - Aleksandr Solzhenitsyn
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Chris, I think that Rob Riggs had something here
On Wed, May 21, 2025 at 2:52?PM Chris Boone WB5ITT via <setxtelecom= [email protected]> wrote: Due to my former company keeping my Kenwood programming cables, I'm kind of stuck right now. I've got two tk790s I need to reprogram the frequencies and I know that front panel programming won't allow me to do that. I've got an old microphone with the connector and want to make up my own programming kpg 43 but I can't find the schematic anywhere. Don't be a smart ass and tell me to go buy one, as some people have previously done in other post. I don't have time! I know transmit and receive data is carried on one pin but how do you interface that to a FTDI? Resistors or is a xstr needed? I have searched everywhere and can't find the damn schematic for this thing. I know I used to have it but I lost it on an old hard drive.
?
TIA
Chris WB5ITT?
-- John Kreno
The line separating good and evil passes not through states, nor between classes, nor between political parties either¡ªbut right through every human heart¡ªand through all human hearts. This line shifts. Inside us, it oscillates with the years. And even within hearts overwhelmed by evil, one small bridgehead of good is retained. And even in the best of all hearts, there remains ¡ an unuprooted small corner of evil. - Aleksandr Solzhenitsyn
|
Due to my former company keeping my Kenwood programming cables, I'm kind of stuck right now. I've got two tk790s I need to reprogram the frequencies and I know that front panel programming won't allow me to do that. I've got an old microphone with the connector and want to make up my own programming kpg 43 but I can't find the schematic anywhere. Don't be a smart ass and tell me to go buy one, as some people have previously done in other post. I don't have time! I know transmit and receive data is carried on one pin but how do you interface that to a FTDI? Resistors or is a xstr needed? I have searched everywhere and can't find the damn schematic for this thing. I know I used to have it but I lost it on an old hard drive.
?
TIA
Chris WB5ITT?
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Re: DB-224-E antenna sources?
It all depends on where you're shopping. I find good deals on Facebook and the internet for antennas and I bought a duplexer out of the city of Auburn California, a TX RX 2 m 6 inch cavity version for only 200 bucks.? I have a DB224E that needs a new harness, I think...got it for nothing
Chris WB5ITT?
I get a discount at Tessco, but with shipping the DB224-E was going to be $2K, tariffs hit aluminum antennas hard, duplexers jumped up too. I ended up ordering a Sinclair Aurora, that was $1500 shipped. Hope the Sinclair works out, specs seem to be ruggeder than the Commander.
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Re: DB-224-E antenna sources?
I get a discount at Tessco, but with shipping the DB224-E was going to be $2K, tariffs hit aluminum antennas hard, duplexers jumped up too. I ended up ordering a Sinclair Aurora, that was $1500 shipped. Hope the Sinclair works out, specs seem to be ruggeder than the Commander.
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Re: Sinclair 2037 multicouplers with 220 kHz spacing
I assume the c2037 was ahead (closer to the antenna) of the ham rx of 144.61 on the duplexer on the bottom???? The notch cavity of that c2037 if set to the normal notch depth will add to the loss of the 144.39 signal because of the width of the notch and a bit of bridging loss of the pass can. ?The notch depth should be reduced to narrow the width of the notch. If I remember correctly, the notch should be adjusted to 15dB.?
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I just bought two with the voice board for $100.00
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Re: Sinclair 2037 multicouplers with 220 kHz spacing
Well then I discovered most of my questions were answered a couple days ago.? And the chart confirms my measured isolation of ~35 dB
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Sinclair 2037 multicouplers with 220 kHz spacing
I started a new thread for this as the most relevant was from 2010
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I have a site with a couple of highband vhf repeaters as well as a ham machine on 145.210 -600. One of the highband repeaters is on a duplexer at the bottom of the string with the other highband repeater and the ham repeater(ve6aah) using 2037 multicouplers.? My hope is to use another 2037 to allow APRS on 144.390 which is 220 kHz from the ham repeaters input.? rx/tx would be nice but I would settle for a rx only if I had to.? It has pretty good coverage already with an antenna on the roof of the building but the main antenna would be great.? The 2037 tunes up nicely to 144.390 after changing to 24" inter-cavity cables, with 3.7 dB loss.
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While tuning, I did not adjust the coupling loops although did check the notch depth of each cans port with the other being unterminated, being ~10.5 dB.? Thanks to the various posters from 04/21/10 who suggested that factor and much more.
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As its a mountaintop site, its pretty hard to test and tune in place but I do have a spare 2037 to emulate the repeaters input on the workbench.? Thats getting cabled up now.
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Is what Im trying to do even possible? Excessive losses on the APRS is tolerable.?
?
Ross
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hy guys,
how much can i ask for an Zetron Maz 48 these days on the used market!
i need advise ,
thanks
gervais ve2ckn
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Re: Looking for a good working repeater controller that has a link port
I am familiar with that controller. I have two of those. Was trying to find something used that would be quite as much money but decided to pull the trigger on a new one from Ken. So guess I'm not looking for anything at the moment. Chad Nelson WI9HF/WRPL979 Janesville Wisconsin 608-754-8671 Send from my spectrum iPhone 16.
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On May 20, 2025, at 4:39?PM, Pierre Martel via groups.io <petem001@...> wrote:
? Hi Chad,
Regarding your request for a repeater controller with link ports, the Arcom RC210 is user-friendly and meets your requirements. There might be one for sale within the group.
For future expansion and ROIP integration, consider Allstarlink.
Best regards, Pierre On Tue, May 20, 2025 at 5:28?PM Chad Nelson via <chad.nelson71= [email protected]> wrote: Hi, does anyone have a good working repeater controller that would have at least one if not, two link ports as well as a repeater port?
Chad Nelson WI9HF/WRPL979
Janesville Wisconsin
608-754-8671
Send from my spectrum iPhone 16.
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Re: Looking for a good working repeater controller that has a link port
Hi Chad,
Regarding your request for a repeater controller with link ports, the Arcom RC210 is user-friendly and meets your requirements. There might be one for sale within the group.
For future expansion and ROIP integration, consider Allstarlink.
Best regards, Pierre
On Tue, May 20, 2025 at 5:28?PM Chad Nelson via <chad.nelson71= [email protected]> wrote: Hi, does anyone have a good working repeater controller that would have at least one if not, two link ports as well as a repeater port?
Chad Nelson WI9HF/WRPL979
Janesville Wisconsin
608-754-8671
Send from my spectrum iPhone 16.
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Looking for a good working repeater controller that has a link port
Hi, does anyone have a good working repeater controller that would have at least one if not, two link ports as well as a repeater port?
Chad Nelson WI9HF/WRPL979
Janesville Wisconsin
608-754-8671
Send from my spectrum iPhone 16.
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W?SVH
Chris Boone WB5ITT
Wayne Childers
Gervais Fillion
Pierre Martel