Nessus
Member
- Joined
- Oct 5, 2011
- Messages
- 28
This is a request for photos of the internals of BCD996P2. In order to get an idea what is needed, please take a look at the photos located here:
http://forums.radioreference.com/vo...5-raw-signal-must-filtered-2.html#post2395013
and here:
Index of /files/photo/996xt
The former set (Showing the CPU ecosystem) will likely require removal of the Metal RF Shield that is over top of the BCD996P2 CPU. This should only be attempted if you have previous experience. (Skill Level: Solder Sucker Wizard). If done correctly, the shield can be replaced with very little effort and zero damage after the photo shoot is completed. If you succeed, please record the numbers on each device under the shield, as shown in the first photo set linked above.
We are trying to answer three questions:
1) What is the processor used in BCD996P2?
2) Is the discriminator a PLL, a full I-Q mixer demodualtor, or something else?
3) Is the USB interface driven directly by the uP, or is there a USB controller?
High level problem statement: We would like to understand effort required to add P25 Phase-II to a BCD996XT. If members of the owner community are interested, we would like to develop a modiication kit that could breath new life into this venerable product.
If Mr. Opitz would be able to shed more light on the two quotes below, or answer the questions above, that would also be helpful, and greatly appreciated by the community of exising BCD996XT owners:
In other words if the RF section is the same, then presumably that part of the PCB could remain the same. If the processor is the same, there also. With the exception of the USB Port, the display and front panel seem the same to us.
Specific questions for Uniden:
1) Is there an IQ Demodulator in BCD996P2 that is different from the FM Demodualtor in BCD996XT?
2) Is the processor on the BCD996P2 a Mitsubishi 32186F8?
3) Is there now a USB controller on the BCD996P2 PCB?)
http://forums.radioreference.com/vo...5-raw-signal-must-filtered-2.html#post2395013
and here:
Index of /files/photo/996xt
The former set (Showing the CPU ecosystem) will likely require removal of the Metal RF Shield that is over top of the BCD996P2 CPU. This should only be attempted if you have previous experience. (Skill Level: Solder Sucker Wizard). If done correctly, the shield can be replaced with very little effort and zero damage after the photo shoot is completed. If you succeed, please record the numbers on each device under the shield, as shown in the first photo set linked above.
We are trying to answer three questions:
1) What is the processor used in BCD996P2?
2) Is the discriminator a PLL, a full I-Q mixer demodualtor, or something else?
3) Is the USB interface driven directly by the uP, or is there a USB controller?
High level problem statement: We would like to understand effort required to add P25 Phase-II to a BCD996XT. If members of the owner community are interested, we would like to develop a modiication kit that could breath new life into this venerable product.
If Mr. Opitz would be able to shed more light on the two quotes below, or answer the questions above, that would also be helpful, and greatly appreciated by the community of exising BCD996XT owners:
Upgrade from XT: Would cost around $499 to do such an upgrade (parts + labor, which would be significant). You'd have to replace the front panel, front port, entire PCB that includes all RF and logic circuits...
The RF design is identical to the BCD996XT. The only changes are as mentioned in the announcement post.
In other words if the RF section is the same, then presumably that part of the PCB could remain the same. If the processor is the same, there also. With the exception of the USB Port, the display and front panel seem the same to us.
Specific questions for Uniden:
1) Is there an IQ Demodulator in BCD996P2 that is different from the FM Demodualtor in BCD996XT?
2) Is the processor on the BCD996P2 a Mitsubishi 32186F8?
3) Is there now a USB controller on the BCD996P2 PCB?)