[time-nuts] info request about hopf Funkuhr 5500

I have bought in a flea market a not working DCF77 receiver module. This unit is a 77.5 kHz receiver with a led clock display and serial ports. I am looking the manual and schematic to try to repair it. Thankyou, Luciano www.timeok.it ___

Re: [time-nuts] Trimble Thunderbolt baseplate size (mass)

Interesting discussion. I simply have my TBolt bolted onto an Aluminium rack panel so I could rack it. I wasn't aware there was any special need beyond that? Right? Regards Paul WB8TSL On Mon, Jul 24, 2017 at 8:12 PM, Bob kb8tq wrote: > Hi > > The TBolt is a great unit !! > > The main source of

Re: [time-nuts] Trimble Thunderbolt baseplate size (mass)

Hi The TBolt is a great unit !! The main source of temperature impact is the DAC / Voltage reference. Since that is a “distributed” circuit, the temperature control also needs to cover more than just the backplate. Bob > On Jul 24, 2017, at 6:37 PM, Norm n3ykf wrote: > > Hi all! > > Al

[time-nuts] Trimble Thunderbolt baseplate size (mass)

Hi all! Allowing a friend to borrow a tbolt. Is it necessary to cool (maintain a certain) baseplate temperature for optimum performance? Currenlty mounted inside an aluminum chassis. It's screwed to an aluminum sheet that covers around 2/3 the base. Thanks, Norm n3ykf _

[time-nuts] Fwd: Annual Maintenance Shutdown of the MSF Service 14 - 31 August 2017

The 60KHz time signal service "MSF" in the UK is to be closed down during the day for the latter part of August for routine maintenance: Annual Maintenance Shutdown of the MSF Service The annual maintenance shutdown of the MSF service to allow

Re: [time-nuts] RS-232 Pin Outs for the Acron Zeit WWVB LCD Clock

[Correcting my earlier comment.] > You could probably add a diode to make it work. It takes more than just a diode. The voltage on the modem control signals is probably too high. You will also need some way to drop it to what the chip expects, probably 5 volts. Simple 3 pin regulators need in