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Re: Krystaly Rocks for MSR2000

 

¿ªÔÆÌåÓý

The correct date was 9/24/ 2019.? Len k4lfk

From: [email protected] <[email protected]> on behalf of k4lfk <k4lfk@...>
Sent: Friday, February 19, 2021 5:34 PM
To: [email protected] <[email protected]>
Subject: Re: [repeater-builder] Krystaly Rocks for MSR2000
?
I paid 46.76 pounds for the TX and RX VHF MSR2000 crystals with shipping on 9/42/2019.? Len k4lfk

From: [email protected] <[email protected]> on behalf of Bob Dengler <no6b@...>
Sent: Friday, February 19, 2021 5:24 PM
To: [email protected] <[email protected]>
Subject: Re: [repeater-builder] Krystaly Rocks for MSR2000
?
At 2/18/2021 12:40 PM, you wrote:
>I have to agree with Bob and Kevin. My past experience with Bomar has been awful.
>
>With respect to Quartslab, maybe crystals for GE are less expensive than for Motorola. The quote I received for the Motorola elements was almost twice what Skipp paid for his GE elements. That or else business is booming and the price is rising in response to increased demand.

QuartSLab prices for G.E. xtals went up over 70% in just 18 months, & that was as of a month ago.? Maybe they went up another 20% since then?

Bob NO6B






Re: Krystaly Rocks for MSR2000

 

¿ªÔÆÌåÓý

I paid 46.76 pounds for the TX and RX VHF MSR2000 crystals with shipping on 9/42/2019.? Len k4lfk

From: [email protected] <[email protected]> on behalf of Bob Dengler <no6b@...>
Sent: Friday, February 19, 2021 5:24 PM
To: [email protected] <[email protected]>
Subject: Re: [repeater-builder] Krystaly Rocks for MSR2000
?
At 2/18/2021 12:40 PM, you wrote:
>I have to agree with Bob and Kevin. My past experience with Bomar has been awful.
>
>With respect to Quartslab, maybe crystals for GE are less expensive than for Motorola. The quote I received for the Motorola elements was almost twice what Skipp paid for his GE elements. That or else business is booming and the price is rising in response to increased demand.

QuartSLab prices for G.E. xtals went up over 70% in just 18 months, & that was as of a month ago.? Maybe they went up another 20% since then?

Bob NO6B






Re: Krystaly Rocks for MSR2000

 

At 2/18/2021 12:40 PM, you wrote:
I have to agree with Bob and Kevin. My past experience with Bomar has been awful.

With respect to Quartslab, maybe crystals for GE are less expensive than for Motorola. The quote I received for the Motorola elements was almost twice what Skipp paid for his GE elements. That or else business is booming and the price is rising in response to increased demand.
QuartSLab prices for G.E. xtals went up over 70% in just 18 months, & that was as of a month ago. Maybe they went up another 20% since then?

Bob NO6B
Re: How to prevent repeating DTMF remote control commands on the TKR-750?

tony dinkel
 

¿ªÔÆÌåÓý

Years ago I ran a touch-tone function decoder on my Santiago Peak repeater that was fed by pre PL muted audio. No tone at all was required to send it a command. And since it didn't require PL to talk to it, it didn't key up the repeater either. So basically, nobody knew that I even had the control system. I had a special control channel programmed that was the same freq just without PL. I would drop to low power, which back then was 200mw, do my commanding and nobody knew the difference. I was lucky that nobody figured that out, considering we had active hackers on the band back then, really lucky.

td
wb6mie

From: [email protected] <[email protected]> on behalf of Joe <k1ike_mail@...>
Sent: Friday, February 19, 2021 6:32 AM
To: [email protected] <[email protected]>
Subject: Re: [repeater-builder] How to prevent repeating DTMF remote control commands on the TKR-750?
?
I have the same problem here. There are a couple of pirate stations that
have been occasionally showing up on my repeater. My response is to shut
the repeater off for a while. My codes were originally sequential, like
12340=OFF and 12341=ON. I changed the ON code to something completely
different so it would be more difficult to figure out.

My long term solution is to install an external controller (S-COM) on
the repeater that mutes DTMF and add an audio delay board to eliminate
the first DTMF digit.

I had thought of how to use the TKR-750 alone to mute DTMF, but could
not find an option to do this. A trick that I thought would work is to
program codes to disable the repeater and then channel switch to a
different receive frequency that will pass through the duplexer. You can
then do your DTMF commands on a different frequency than the input
frequency. It's just an idea, but I never figured out the details to see
if it would actually work.

My external S-Com controller will allow more flexibility, like changing
power, changing PL, switching to DCS, macros, etc that the limited
internal controller cannot do. It also adds the important option of a
control receiver.

73, Joe, K1ike

On 2/19/2021 8:23 AM, srikanth bhat via groups.io wrote:
> Hello,
> I have set up DTMF remote control for the TKR-750. The control commands are going to be repeated (and heard, copied by all users) when they are sent to the input frequency to remote control the repeater.? Is there a way to prevent this to ensure remote controls are only accessible to the admin?
> tnx & 73
> Sri, vu2sbj
Re: How to prevent repeating DTMF remote control commands on the TKR-750?

 

¿ªÔÆÌåÓý

  • Thanks Jeff - but that would mean that normal repeat function would require a tone to get through - correct?

?

Are you saying that you operate the repeater carrier-squelch?

?

If so, then I'd do the audio muting externally, but still use TOR to do it:

?

  • Program repeater for duplex instead of repeat.? In making this change, you now have to key the transmitter yourself, and route audio from RA to TA yourself.

?

  • Program a PL or DPL decode tone for the receiver.

?

  • Program an output for COR, and a separate one for TOR, both active-low.

?

  • Tie COR to external PTT.? Whenever COR goes active, it will key the transmitter, i.e. the repeater will repeat based on noise squelch squelch.?

?

  • Run RA audio through a normally closed relay (or solid state equivalent circuit) back into TA to complete the repeat audio path.? The relay coil is then driven by TOR (buffer as necessary).? When you transmit with the programmed PL tone, the normally-closed relay will open up, so no receive audio goes to the transmitter while you're sending DTMF to control the repeater.

?

All of this would obviously be just as easy to do with a real repeater controller, but you could get by with the bare minimum this way.

?

??????????????????????????????????????????????????????????????? ??????????????? --- Jeff WN3A

?


Virus-free.

Re: How to prevent repeating DTMF remote control commands on the TKR-750?

 

Here is something to think about also that may help. Look at the attached file. Rather than using a CTCSS decoder, I used the COR from the control radio.

Mick - W7CAT

----- Original Message -----
From: Jeff DePolo WN3A
To: [email protected]
Sent: Friday, February 19, 2021 08:05:11 AM
Subject: Re: [repeater-builder] How to prevent repeating DTMF remote control commands on the TKR-750?

I have set up DTMF remote control for the TKR-750. The control commands
are going to be repeated (and heard, copied by all users) when they
are sent
to the input frequency to remote control the repeater. Is there a
way to
prevent this to ensure remote controls are only accessible to the
admin?

Unless I'm mis-remembering, you should be able to uncheck the box
that says "Remote Access with QT/DQT" in the Remote Control screen. That will allow you to send DTMF to control the repeater without having to send the PL/DPL that the repeater receiver is configured for. After disabling that, you should be able to transmit with no PL tone (or any other "wrong" tone) to command the repeater, but your audio won't be repeated because you're not sending the correct tone to open up the receiver and repeat audio path. Someone listening on the input might still be able to copy your DTMF digits, but at least it won't be repeated out the repeater transmitter.

--- Jeff WN3A




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--
Untitled Document

CAT Note 20 Death Ray.pdf
CAT Note 20 Death Ray.pdf

Re: How to prevent repeating DTMF remote control commands on the TKR-750?

 

What Dan sezs.

I've installed this at our main repeater site:
<>
We have a CDM-750 that is within 100 KHz of the UHF repeater input, and it feeds this DTMF decoder. I don't even use PL to gate the audio. This way, from home or the car, we can quickly shut down the repeaters. We also have IP base AC strip controllers where we can reboot just about everything. You can for each outlet, turn it on, off? or reboot.
Warning: The outlet that controls your site Internet router? Only use the reboot option on that ac socket. Never trigger "Off" figuring you can go back in and trigger "on". Ask me how I know!

73 de Tom K8TB

On 2/19/2021 10:17 AM, Dan Woodie wrote:
Just use a separate receiver on another frequency and a DTMF controlled relay.? There is a good unit that has 8 relays that is advertised in the back of every QST magazine. You can then connect that to the programmable logic ins and TX disable, RPT Disable, change channel, etc without having to add a repeater controller in-line and without the codes being on the input frequency.

Thanks,

Dan Woodie, CETsr
KC8ZUM
Re: How to prevent repeating DTMF remote control commands on the TKR-750?

 

Thanks Jeff - but that would mean that normal repeat function would require a tone to get through - correct?
We do not want to do that either.

I think from the several suggestions we have, adding another receiver, DTMF decoder controlling a relay is an easy way out.
Thank you all for your suggestions.
73
Sri, VU2SBJ
On Friday, February 19, 2021, 08:35:28 PM GMT+5:30, Jeff DePolo WN3A <jd0@...> wrote:


> I have set up DTMF remote control for the TKR-750. The control commands
> are going to be repeated (and heard, copied by all users) when they are sent
> to the input frequency to remote control the repeater.? Is there a way to
> prevent this to ensure remote controls are only accessible to the admin?


Unless I'm mis-remembering, you should be able to uncheck the box that says "Remote Access with QT/DQT" in the Remote Control screen.? That will allow you to send DTMF to control the repeater without having to send the PL/DPL that the repeater receiver is configured for.? After disabling that, you should be able to transmit with no PL tone (or any other "wrong" tone)? to command the repeater, but your audio won't be repeated because you're not sending the correct tone to open up the receiver and repeat audio path.? Someone listening on the input might still be able to copy your DTMF digits, but at least it won't be repeated out the repeater transmitter.

??? ??? ??? ??? ??? --- Jeff WN3A




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This email has been checked for viruses by Avast antivirus software.
Re: How to prevent repeating DTMF remote control commands on the TKR-750?

 

A good number of years ago I was using an RC850 controller and had a 220 MHz receiver feeding it for control.? DTMF never made it to any transmitter.

Today you can buy a DTMF decoder for almost nothing from China, a relay board and Arduino to do the logic.? Another thought is to have a subaudio decoder and use a separate sub audio tone? than the repeater receiver (if using sub tone) and feed it to a relay or logic circuit to cut off the transmitter when sending control DTMF.

Ralph ku4pt




On Friday, February 19, 2021, 09:51:55 AM EST, STANLEY STANUKINOS <ka5iid@...> wrote:


Put in a second receiver on a different UHF channel within the pass band of your duplexor. Put a controller on it and there you go. It will drive them nuts when you control it and they can not hear a thing.
> On Feb 19, 2021, at 8:33 AM, Joe <k1ike_mail@...> wrote:
>
> ?I have the same problem here. There are a couple of pirate stations that have been occasionally showing up on my repeater. My response is to shut the repeater off for a while. My codes were originally sequential, like 12340=OFF and 12341=ON. I changed the ON code to something completely different so it would be more difficult to figure out.
>
> My long term solution is to install an external controller (S-COM) on the repeater that mutes DTMF and add an audio delay board to eliminate the first DTMF digit.
>
> I had thought of how to use the TKR-750 alone to mute DTMF, but could not find an option to do this. A trick that I thought would work is to program codes to disable the repeater and then channel switch to a different receive frequency that will pass through the duplexer. You can then do your DTMF commands on a different frequency than the input frequency. It's just an idea, but I never figured out the details to see if it would actually work.
>
> My external S-Com controller will allow more flexibility, like changing power, changing PL, switching to DCS, macros, etc that the limited internal controller cannot do. It also adds the important option of a control receiver.
>
> 73, Joe, K1ike
>
Re: How to prevent repeating DTMF remote control commands on the TKR-750?

 

Just use a separate receiver on another frequency and a DTMF controlled relay.? There is a good unit that has 8 relays that is advertised in the back of every QST magazine.? You can then connect that to the programmable logic ins and TX disable, RPT Disable, change channel, etc without having to add a repeater controller in-line and without the codes being on the input frequency.

Thanks,

Dan Woodie, CETsr
KC8ZUM

On Fri, Feb 19, 2021, 8:23 AM srikanth bhat via <emailsbbhat=[email protected]> wrote:
Hello,
I have set up DTMF remote control for the TKR-750. The control commands are going to be repeated (and heard, copied by all users) when they are sent to the input frequency to remote control the repeater.? Is there a way to prevent this to ensure remote controls are only accessible to the admin?
tnx & 73
Sri, vu2sbj
Re: How to prevent repeating DTMF remote control commands on the TKR-750?

 

I have set up DTMF remote control for the TKR-750. The control commands
are going to be repeated (and heard, copied by all users) when they are sent
to the input frequency to remote control the repeater. Is there a way to
prevent this to ensure remote controls are only accessible to the admin?
Unless I'm mis-remembering, you should be able to uncheck the box that says "Remote Access with QT/DQT" in the Remote Control screen. That will allow you to send DTMF to control the repeater without having to send the PL/DPL that the repeater receiver is configured for. After disabling that, you should be able to transmit with no PL tone (or any other "wrong" tone) to command the repeater, but your audio won't be repeated because you're not sending the correct tone to open up the receiver and repeat audio path. Someone listening on the input might still be able to copy your DTMF digits, but at least it won't be repeated out the repeater transmitter.

--- Jeff WN3A




--
This email has been checked for viruses by Avast antivirus software.
Re: How to prevent repeating DTMF remote control commands on the TKR-750?

 

Put in a second receiver on a different UHF channel within the pass band of your duplexor. Put a controller on it and there you go. It will drive them nuts when you control it and they can not hear a thing.

On Feb 19, 2021, at 8:33 AM, Joe <k1ike_mail@...> wrote:

?I have the same problem here. There are a couple of pirate stations that have been occasionally showing up on my repeater. My response is to shut the repeater off for a while. My codes were originally sequential, like 12340=OFF and 12341=ON. I changed the ON code to something completely different so it would be more difficult to figure out.

My long term solution is to install an external controller (S-COM) on the repeater that mutes DTMF and add an audio delay board to eliminate the first DTMF digit.

I had thought of how to use the TKR-750 alone to mute DTMF, but could not find an option to do this. A trick that I thought would work is to program codes to disable the repeater and then channel switch to a different receive frequency that will pass through the duplexer. You can then do your DTMF commands on a different frequency than the input frequency. It's just an idea, but I never figured out the details to see if it would actually work.

My external S-Com controller will allow more flexibility, like changing power, changing PL, switching to DCS, macros, etc that the limited internal controller cannot do. It also adds the important option of a control receiver.

73, Joe, K1ike

On 2/19/2021 8:23 AM, srikanth bhat via groups.io wrote:
Hello,
I have set up DTMF remote control for the TKR-750. The control commands are going to be repeated (and heard, copied by all users) when they are sent to the input frequency to remote control the repeater. Is there a way to prevent this to ensure remote controls are only accessible to the admin?
tnx & 73
Sri, vu2sbj
Re: How to prevent repeating DTMF remote control commands on the TKR-750?

 

I have the same problem here. There are a couple of pirate stations that have been occasionally showing up on my repeater. My response is to shut the repeater off for a while. My codes were originally sequential, like 12340=OFF and 12341=ON. I changed the ON code to something completely different so it would be more difficult to figure out.

My long term solution is to install an external controller (S-COM) on the repeater that mutes DTMF and add an audio delay board to eliminate the first DTMF digit.

I had thought of how to use the TKR-750 alone to mute DTMF, but could not find an option to do this. A trick that I thought would work is to program codes to disable the repeater and then channel switch to a different receive frequency that will pass through the duplexer. You can then do your DTMF commands on a different frequency than the input frequency. It's just an idea, but I never figured out the details to see if it would actually work.

My external S-Com controller will allow more flexibility, like changing power, changing PL, switching to DCS, macros, etc that the limited internal controller cannot do. It also adds the important option of a control receiver.

73, Joe, K1ike

On 2/19/2021 8:23 AM, srikanth bhat via groups.io wrote:
Hello,
I have set up DTMF remote control for the TKR-750. The control commands are going to be repeated (and heard, copied by all users) when they are sent to the input frequency to remote control the repeater. Is there a way to prevent this to ensure remote controls are only accessible to the admin?
tnx & 73
Sri, vu2sbj
Re: Krystaly Rocks for MSR2000

 

In had a set of Crystals made for my HT-220 from QuartSLab and they were $82 including shipping from the UK. Beautifully made and they have all the specs for Motorola radios. I installed them last weekend and they netted fine and work great.
How to prevent repeating DTMF remote control commands on the TKR-750?

 

Hello,
I have set up DTMF remote control for the TKR-750. The control commands are going to be repeated (and heard, copied by all users) when they are sent to the input frequency to remote control the repeater. Is there a way to prevent this to ensure remote controls are only accessible to the admin?
tnx & 73
Sri, vu2sbj
Re: MSF TX VCO issue

 

Since you already swapped VCOs and the problem continued, that points to the Uniboard. Other than swapping it with another one, I don't know how successful you'll be actually following the signals and repairing it. The 440 MHz signal gets divided down by a pre-scaler before being supplied to the actual synthesizer logic, which generates the steering line voltage to get the VCO on the correct frequency. While synthesizer theory is fairly similar from radio to radio, there aren't many details about the components used on the Uniboard. They were probably made by or for Motorola and discontinued over 20 years ago.

You might be able to isolate a bad part with a heat gun and some cold spray, but because the ICs are on the underside of the Uniboard, you can only really access them from the solder side of the board, and precise application of heat or cold won't be possible. Still, you can heat the back of the board until it fails, then spray cold spray over the same area in an attempt to localize it. There could be a broken trace or intermittent component that you CAN replace.
Re: Rack Panel SWR Bridge

 

Might want to look at or at his ebay listings.?? They sell a rack panels for a single Bird 43 and another for a dual.? Or they can make whatever you want.

Mike WA6ILQ

?
Re: Rack Panel SWR Bridge

 

I'd always liked the idea of a directional coupler in line (perhaps TOR) to drive a device to display either linear (watts) or log (my preference) as a choice the tech can use.? Then perhaps as part of a housekeeping function could input to a controller and/or downlink reporting system so one could check remotely if there's a developing issue before heading out to the remote site.? In the microwave world (State of Washington) we would get a alarm if a transmitter starting loosing power but that's another topic.
--
Regards, Karl Shoemaker
To contact me, please visit SRG's web site at?
for the current email address.
-
Re: Sirio 5/8 Groundplane

 

I used this it work well for antenna at the house for 6m. Also using this as my repeater antenna for 10m.
W4BWW
Re: Rack Panel SWR Bridge

 

¿ªÔÆÌåÓý

They are a bit pricey, but I had good luck with the Array Solutions? Power Master series watt meters.
They will set the sensors for the frequency range you need, in addition to the HF units, I used several in the VHF Marine band at 160.??? They do have a serial port and can be read remotely.??



Chuck? n0nhj


On 2/18/2021 17:21, Jeff DePolo WN3A wrote:

  • Looking for recommendation's for a 19" panel mounted 150 MHz SWR bridge.

?

Does it have to be a bridge, or can it be two directional power meters and some brains to display VSWR digitally?? The Bird Power Analyst series was available in rack-mount.? Those could display forward/reverse power, return loss and equivalent VSWR, PEP, AM modulation depth, etc..

?

??????????????????????????????????????????????????????????????????????????????? --- Jeff WN3A


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