There are DIY projects on-line to build this device. The RUclipsr "Skullcom" has a complete video series, including code and PCB files, IIRC. It uses an Arduino and a cheap Chinese clone of a Ublox GPS receiver. Using these clones is a typical DIY approach. A lot of clones are garbage, but, these clones seem to be reliable for this use. These receivers are also capable of outputting both a 1PPS and 10MHz, without the external oscillator. That is not to say that eliminating the temperature controlled oscillator is a good idea. IIRC, though your GPSDO is a new unit, it uses a recycled oven oscillator. That is not to say that a used oven oscillator is a bad thing, but it is something to consider in making a purchasing decision. You might want to post the link to the Skullcom project. YT prevents commenters from posting links, but the YT channel owner can post them. This is the exact title: Scullcom Hobby Electronics # 35 - Design & Build a GPS locked Frequency Reference Standard
Interesting. Can't help but wonder the tricks used to make up for latency of the gps signals arriving at the receiver. Assuming this unit is made to be stationary, so I guess it shouldn't be too difficult of a problem to work out since you know position and velocity of the satellites. Has to be somewhat worked out for gps to work at all. When I was little I knew one of the founders of Garmin. I think some fiber equipment switched to gps syncing instead of atomic type clocks.
I am confused about the amplifier. My HP 8657B came with the "TIME BASE HIGH STABILITY OUTPUT" Option, I am currently using it’s external output to match my HP frequency counter accuracy with the HP8657B. Shortly I will be receiving and HP8904, a multifunction synthesizer that will pair with HP8657B to send FM stereo channels and pilot signal. I was thinking of using a BNC T-Connector to share the "TIME BASE HIGH STABILITY OUTPUT" with both the frequency counter and the HP8904. Do you know if this is acceptable or do I need to use an amplifier or coupler of some kind. I thought I could just use the T-connector but after seeing your use of an amplifier I thought I would see if someone here could provide some advice. I don't want to damage my HP8657B output. James
There are DIY projects on-line to build this device. The RUclipsr "Skullcom" has a complete video series, including code and PCB files, IIRC. It uses an Arduino and a cheap Chinese clone of a Ublox GPS receiver. Using these clones is a typical DIY approach. A lot of clones are garbage, but, these clones seem to be reliable for this use. These receivers are also capable of outputting both a 1PPS and 10MHz, without the external oscillator. That is not to say that eliminating the temperature controlled oscillator is a good idea. IIRC, though your GPSDO is a new unit, it uses a recycled oven oscillator. That is not to say that a used oven oscillator is a bad thing, but it is something to consider in making a purchasing decision. You might want to post the link to the Skullcom project. YT prevents commenters from posting links, but the YT channel owner can post them. This is the exact title: Scullcom Hobby Electronics # 35 - Design & Build a GPS locked Frequency Reference Standard
It has definitely given me some ideas!
I would be interested in the Silent, too. So far I did not find any info about the levels it expects and if it should be a sine or a square signal.
Interesting. Can't help but wonder the tricks used to make up for latency of the gps signals arriving at the receiver. Assuming this unit is made to be stationary, so I guess it shouldn't be too difficult of a problem to work out since you know position and velocity of the satellites. Has to be somewhat worked out for gps to work at all. When I was little I knew one of the founders of Garmin. I think some fiber equipment switched to gps syncing instead of atomic type clocks.
I found that a video DA works well as a distribution amp.
Yes, I built mine using an Extron DA following Gerry Sweeney's guide and it works great: ruclips.net/video/chrzrod3tQY/видео.html
I am confused about the amplifier. My HP 8657B came with the "TIME BASE HIGH STABILITY OUTPUT" Option, I am currently using it’s external output to match my HP frequency counter accuracy with the HP8657B.
Shortly I will be receiving and HP8904, a multifunction synthesizer that will pair with HP8657B to send FM stereo channels and pilot signal. I was thinking of using a BNC T-Connector to share the "TIME BASE HIGH STABILITY OUTPUT" with both the frequency counter and the HP8904. Do you know if this is acceptable or do I need to use an amplifier or coupler of some kind. I thought I could just use the T-connector but after seeing your use of an amplifier I thought I would see if someone here could provide some advice. I don't want to damage my HP8657B output. James
show you amp for 10 mhz,,,please