Wednesday, October 15, 2014

Connect Systems CS7000: Update

I've been following the development of the CS7000 (and the mobile CS8000), but not published much about it. Jerry sent this update a while back to the CS7000 Yahoo Group:
"I got some good new and bad news about the project. Being good or bad depends upon your perspective.

The good news is I will be able to put in full DMR capability fairly rapidly. The bad news is I had to take out the WiFi Capability in this version of the radio.

After speaking to some experts in the field of Software Defined Radios, it was determined that my existing hardware design had a small chance of ever doing DMR. The reason had to do with the Error correcting code of DMR verses the other formats. DMR uses a technology called "Turbo" while all the other formats use a technology called "Convolution". If I wanted to do DMR as a software defined radio I would either need a fast DSP processor or have a DMR baseband chip like what is used in the CS700.

The best solution to have a combination DMR and D-STAR radio was to add the DMR baseband chip like was used in the CS700 and change the hardware design so it looks very very close the existing CS700. While this approach is the more expensive approach, it will allow me to incorporate DMR into the CS700 very rapidly. Possibly even before the D-STAR. 
Because I had to add a fairly substantial size chip along with the AMBE 3000R, there was no more room for the WiFi module. Possibly in a future version of the CS7000 I will put back the WiFi module.

The hardware has now been redesigned and I submitted it to the manufacturer for review to make sure he can build it. The software is progressing smoothly although there is substantial work to take into account the new hardware design.

I will be able to put in the WiFi in future versions by a careful mechanical design of the electronics. Probably use Hybrid circuitry to reduce the size. I might at that time also incorporate Blue Tooth and GPS along with the WiFi if I can get the parts I need.

May also be able to do a multi band design. For now I am concentrating on getting the first version of the CS7000 finished with both D-STAR and DMR capability.

Jerry Wanger KK6LFS"


  1. So it will do moto trbo then and what is the price and when will it be available I know it its not out now thanks kd8qbh

  2. Lots of issues with the existing CSI/Covalue radios ... Lots of promises for the "amazing" new 7000/8000. Nothing concrete so far.