I am brewing a satellite receiver. The 67 Hz CTCSS tone is quite annoying. Is there anyway to easily filter it out?
- f
On 07/18/18 13:43, Ashhar Farhan wrote:
I am brewing a satellite receiver. The 67 Hz CTCSS tone is quite annoying. Is there anyway to easily filter it out?
How about a simple high-pass filter?
https://www.electronics-tutorials.ws/filter/filter_3.html
--- Zach N0ZGO
I'm currently wondering if there is a guideline in general to select filter components so that they are realistic / common part values and still get the performance desired? The calculations might result in exact values for C, R, and might not include accommodation for the C* and R* of the PCB traces, or of the associated wiring - what are practical steps to allow for real world filter construction.
Also - suddenly I am wondering if I shouldn't be looking for a vendor who supplies/manufacturers pre-designed filter blocks for inclusion in my projects. Mouser?
Samudra N3RDX.
-----Original Message----- From: AMSAT-BB [mailto:[email protected]] On Behalf Of Zach Metzinger Sent: Wednesday, July 18, 2018 2:55 PM To: [email protected] Subject: Re: [amsat-bb] 67 Hz filter
On 07/18/18 13:43, Ashhar Farhan wrote:
I am brewing a satellite receiver. The 67 Hz CTCSS tone is quite annoying. Is there anyway to easily filter it out?
How about a simple high-pass filter?
https://www.electronics-tutorials.ws/filter/filter_3.html
--- Zach N0ZGO _______________________________________________ Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb The information contained in this communication is confidential, may be privileged and is intended for the exclusive use of the above named addressee(s). If you are not the intended recipient(s), you are expressly prohibited from copying, distributing, disseminating, or in any other way using any information contained within this communication. If you have received this communication in error please contact the sender by telephone or by response via mail. We have taken precautions to minimize the risk of transmitting software viruses, but we advise you to carry out your own virus checks on any attachment to this message. We cannot accept liability for any loss or damage caused by software viruses.
It’s a simple high pass audio filter, don’t overthink it. Surely the tolerance values of the components are going to far outweigh any contributions to the circuit from PCB tracings.
73, Mike Diehl W8LID
On Jul 19, 2018, at 07:19, Samudra Haque [TTLLC] [email protected] wrote:
I'm currently wondering if there is a guideline in general to select filter components so that they are realistic / common part values and still get the performance desired? The calculations might result in exact values for C, R, and might not include accommodation for the C* and R* of the PCB traces, or of the associated wiring - what are practical steps to allow for real world filter construction.
Also - suddenly I am wondering if I shouldn't be looking for a vendor who supplies/manufacturers pre-designed filter blocks for inclusion in my projects. Mouser?
Samudra N3RDX.
-----Original Message----- From: AMSAT-BB [mailto:[email protected]] On Behalf Of Zach Metzinger Sent: Wednesday, July 18, 2018 2:55 PM To: [email protected] Subject: Re: [amsat-bb] 67 Hz filter
On 07/18/18 13:43, Ashhar Farhan wrote: I am brewing a satellite receiver. The 67 Hz CTCSS tone is quite annoying. Is there anyway to easily filter it out?
How about a simple high-pass filter?
https://www.electronics-tutorials.ws/filter/filter_3.html
--- Zach N0ZGO _______________________________________________ Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb The information contained in this communication is confidential, may be privileged and is intended for the exclusive use of the above named addressee(s). If you are not the intended recipient(s), you are expressly prohibited from copying, distributing, disseminating, or in any other way using any information contained within this communication. If you have received this communication in error please contact the sender by telephone or by response via mail. We have taken precautions to minimize the risk of transmitting software viruses, but we advise you to carry out your own virus checks on any attachment to this message. We cannot accept liability for any loss or damage caused by software viruses. _______________________________________________ Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
participants (4)
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Ashhar Farhan -
Mike Diehl -
Samudra Haque [TTLLC] -
Zach Metzinger