Did Pace communications make a model 1000B 40channel radio?

Yes, but finding one is very rare!! It has a totally different main board, (PLL), then the original x-tal synth main board. Some say it is a very early cyber-net board, but I have not been able to find any info to corroborate that yet. If you have one & are a collector of CB radiOS, KEEP IT! It can only go up in value!!