• Effective immediately we will be deleting, without notice, any negative threads or posts that deal with the use of encryption and streaming of scanner audio.

    We've noticed a huge increase in rants and negative posts that revolve around agencies going to encryption due to the broadcasting of scanner audio on the internet. It's now worn out and continues to be the same recycled rants. These rants hijack the threads and derail the conversation. They no longer have a place anywhere on this forum other than in the designated threads in the Rants forum in the Tavern.

    If you violate these guidelines your post will be deleted without notice and an infraction will be issued. We are not against discussion of this issue. You just need to do it in the right place. For example:
    https://forums.radioreference.com/rants/224104-official-thread-live-audio-feeds-scanners-wait-encryption.html

PRO-2023 Tap problem

Status
Not open for further replies.

lest69

Member
Joined
Jun 7, 2006
Messages
3
In the past, I successfully tapped a PRO-90, which is still working. I recently bought a PRO-2023. I was able to tap the discriminator pin (10). However, when I plug in the cable to connect to the PC, the audio level coming from the speaker drops significantly, and the signal received in the PC is very low. I also lose control of squelch when the cable is in place. It works completely fine when I disconnect the cable. In comparing the ICs of the PRO-90 and 2023, the typical output voltage from the discriminator should be about 5x greater in the 2023 than in the 90, yet it is actually less. Does anyone know why the drop in voltage, or how I can correct it?
Thanks
Andrew (lest69)
 

Al42

Member
Joined
Apr 29, 2005
Messages
3,485
Location
Long Island, NY, USA
The 2023 probably has a higher source impedance, so you're loading it down more. Try a 10k resistor in series with your tap.
 

lest69

Member
Joined
Jun 7, 2006
Messages
3
10k resistor

Actually, I tried it with and without a 10k resistor. There was no change between the two cases.
 
Status
Not open for further replies.
Top