Re: Low cost GPS receiver?

[Greg Troxel]

Paul Fertser <fercerpav@gmail.com> writes:

> BTW, common (back then) MAX232 RS-232 PHY was meant to be used with 5V
> Vcc and so it was doubling it to produce -10 V / +10 V
> signals. MAX2323 was for 3.3 V power, so the resulting waveforms were
> -6.6 V / + 6.6 V. I do not remember reading about any compatibility
> issues with either.

Fine, but how do I hook up a ublox8 to the 20 mA current loop serial
port (that I was previously using for an ASR33) on my PDP8?