Re: [time-nuts] Trak 8821B ---- was Z3815A Internal SMA 10Mhz Output

2012-08-22 Thread GandalfG8
In a message dated 22/08/2012 21:30:36 GMT Daylight Time, b...@lysator.liu.se writes: Hi Nigel, > > With regards to the Oncore VP carrier phase measurement option, I'm not > too sure that the 8821B does actually make use of that. The "Z" is a pure software option, to enable the phase capa

Re: [time-nuts] Trak 8821B ---- was Z3815A Internal SMA 10Mhz Output

2012-08-22 Thread bg
Hi Nigel, > > With regards to the Oncore VP carrier phase measurement option, I'm not > too sure that the 8821B does actually make use of that. The "Z" is a pure software option, to enable the phase capability already in all of the VP receivers. So you pay extra, but get exactly the same hardwar

Re: [time-nuts] Trak 8821B ---- was Z3815A Internal SMA 10Mhz Output

2012-08-22 Thread GandalfG8
In a message dated 22/08/2012 19:21:03 GMT Daylight Time, gandal...@aol.com writes: With regards to the Oncore VP carrier phase measurement option, I'm not too sure that the 8821B does actually make use of that. My 8821B, manufactured in 1999, does contain the 8 channel Oncore VP B8121Z116

Re: [time-nuts] Trak 8821B ---- was Z3815A Internal SMA 10Mhz Output

2012-08-22 Thread GandalfG8
Hi Bjorn Mine did come from a UK Ebay seller in Scotland, just under four years ago, and he told me at that time he had two more and we'd originally discussed swapping those two for a radio, until the first one arrived and my enthusiasm tailed off a bit:-) It's been a while since I've had

Re: [time-nuts] Trak 8821B ---- was Z3815A Internal SMA 10Mhz Output

2012-08-22 Thread bg
Hi Nigel, Yes, I have the same version. We might have got it from the same UK epay source. The GPS did not work reliably, and I did start testing that module outside the Trak unit, and also tried VP(8chan) receivers that I had. Did not really conclude why the GPS did not behave properly. I was, li

Re: [time-nuts] Trak 8821B ---- was Z3815A Internal SMA 10Mhz Output

2012-08-22 Thread GandalfG8
Hi Bjorn Is yours also the cut down 2.084MHz version, or do you have a "proper" 8821B with a more useful GPSDO frequency and all the outputs fitted? I think this one was originally used in a trunked radio system. I've just checked and the fitted VP Oncore is the B8121Z116, so perhaps the s