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-   -   Discriminator tap for BC895XLT Needed (https://www.radiobanter.com/scanner/63599-discriminator-tap-bc895xlt-needed.html)

Steven Fritts February 4th 05 11:20 PM

Discriminator tap for BC895XLT Needed
 
Can someone tell me the proper tap off procedure for the BC895? I have
found-I think-the correct tap off point but the audio is severely
affected on speaker output if I feed it to a sound card.

Steve

Brengsek! February 5th 05 07:22 AM

On Fri, 04 Feb 2005 23:20:24 GMT, (Steven Fritts)
wrote:

Can someone tell me the proper tap off procedure for the BC895? I have
found-I think-the correct tap off point but the audio is severely
affected on speaker output if I feed it to a sound card.


According to
http://www.discriminator.nl/ic/ it should be pin 9 of the
MC13371. Did you tap the right point?

--
Cabin crew: yellow door selectors automatic

Steven Fritts February 5th 05 08:30 PM




not sure, but THANK YOU for the info!!!
Do I need to use any dropping resistor or make up a network to isolate
it from the sound card input impedance??


On Sat, 05 Feb 2005 08:22:13 +0100, Brengsek! wrote:

On Fri, 04 Feb 2005 23:20:24 GMT, (Steven Fritts)
wrote:

Can someone tell me the proper tap off procedure for the BC895? I have
found-I think-the correct tap off point but the audio is severely
affected on speaker output if I feed it to a sound card.


According to
http://www.discriminator.nl/ic/ it should be pin 9 of the
MC13371. Did you tap the right point?

--
Cabin crew: yellow door selectors automatic



Brengsek! February 5th 05 10:57 PM

On Sat, 05 Feb 2005 20:30:22 GMT, (Steven Fritts)
wrote:

Can someone tell me the proper tap off procedure for the BC895? I have
found-I think-the correct tap off point but the audio is severely
affected on speaker output if I feed it to a sound card.


According to
http://www.discriminator.nl/ic/ it should be pin 9 of the
MC13371. Did you tap the right point?


not sure, but THANK YOU for the info!!!
Do I need to use any dropping resistor or make up a network to isolate
it from the sound card input impedance??


I always use a resistor between 5k6 and 15k, but that's merely to
protect the discriminator output from short circuiting during
(un)plugging.

Rene

--
Cabin crew: yellow door selectors automatic

Steven Fritts February 6th 05 02:40 AM

THANK YOU!


Steve

On Sat, 05 Feb 2005 23:57:27 +0100, Brengsek! wrote:

On Sat, 05 Feb 2005 20:30:22 GMT, (Steven Fritts)
wrote:

Can someone tell me the proper tap off procedure for the BC895? I have
found-I think-the correct tap off point but the audio is severely
affected on speaker output if I feed it to a sound card.

According to
http://www.discriminator.nl/ic/ it should be pin 9 of the
MC13371. Did you tap the right point?


not sure, but THANK YOU for the info!!!
Do I need to use any dropping resistor or make up a network to isolate
it from the sound card input impedance??


I always use a resistor between 5k6 and 15k, but that's merely to
protect the discriminator output from short circuiting during
(un)plugging.

Rene

--
Cabin crew: yellow door selectors automatic



Brengsek! February 6th 05 08:14 AM

On Sat, 05 Feb 2005 23:57:27 +0100, Brengsek! wrote:

Do I need to use any dropping resistor or make up a network to isolate
it from the sound card input impedance??


I always use a resistor between 5k6 and 15k, but that's merely to
protect the discriminator output from short circuiting during
(un)plugging.


To be precise, I should write that I use a resistor to protect the
receiver's discriminator when the output is short circuited during
(un)plugging.

--
Cabin crew: yellow door selectors automatic


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