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21. Re: [TenTec] Some Observations on Orion Stability/Calibration (score: 1)
Author: "Eric F. Richards" <efricha@dimensional.com>
Date: Wed, 04 Jun 2003 07:40:14 -0600
Well, beyond being incredibly picky, none -- *yet*. I'm not doing interferometry or diversity reception, *yet*, but I may want to play with it in the future. For me it was a combination of a couple t
/archives//html/TenTec/2003-06/msg00142.html (12,297 bytes)

22. Re: [TenTec] Some Observations on Orion Stability/Calibration (score: 1)
Author: "Eric F. Richards" <efricha@dimensional.com>
Date: Wed, 04 Jun 2003 07:44:03 -0600
73, Mark This is not so much of an issue as it may be if you are using several receivers perhaps in space or polarization diversity or plan to use a transmitter or transceiver along with the RX340. I
/archives//html/TenTec/2003-06/msg00143.html (11,923 bytes)

23. Re: [TenTec] Some Observations on Orion Stability/Calibration (score: 1)
Author: "Eric F. Richards" <efricha@dimensional.com>
Date: Wed, 04 Jun 2003 13:18:23 -0600
When I was first hooking up my RX340, I accidentally plugged my HF antenna into the external reference input. The front panel LED actually lit indicating that the RX340 had detected a 10 MHz referenc
/archives//html/TenTec/2003-06/msg00165.html (13,470 bytes)

24. Re: [TenTec] Some Observations on Orion Stability/Calibration (score: 1)
Author: "Eric F. Richards" <efricha@dimensional.com>
Date: Wed, 04 Jun 2003 14:35:04 -0600
At 09:35 AM 6/4/2003 -1000, you wrote: Oh, what the heck. With a $3900 Ten Tec rcvr (340) and about $3600 in my Orion, whats another $350 for frequency accuracy? Have called the supplier and placed a
/archives//html/TenTec/2003-06/msg00170.html (10,930 bytes)

25. Re: [TenTec] Some Observations on Orion Stability/Calibration (score: 1)
Author: "Eric F. Richards" <efricha@dimensional.com>
Date: Wed, 04 Jun 2003 17:00:15 -0600
Well, T-T assumes you know what you are doing (and read the manual) before connecting a frequency standard to the ext. standard input. The antenna input, on the other hand, should be more robust give
/archives//html/TenTec/2003-06/msg00191.html (11,307 bytes)

26. Re: [TenTec] hp Z3801A Interface Unit (score: 1)
Author: "Eric F. Richards" <efricha@dimensional.com>
Date: Wed, 04 Jun 2003 19:51:12 -0600
For those of you as I am, perhaps unable, for whatever reasons, to do close in, fine wire, tiny circuit board component mod type stuff, I have found the following component. Seems to be just what is
/archives//html/TenTec/2003-06/msg00205.html (10,276 bytes)

27. Re: [TenTec] hp Z3801A Interface Unit (score: 1)
Author: "Eric F. Richards" <efricha@dimensional.com>
Date: Thu, 05 Jun 2003 07:41:49 -0600
Hi, Jim, You wrote, in part: Oh my! Eric, this just becomes more and more silly! Yes, I can work pretty well with external perf board; have done that a bit already since my vision went South, hi. I h
/archives//html/TenTec/2003-06/msg00218.html (13,229 bytes)

28. Re: [TenTec] hp Z3801A GPS Unit (score: 1)
Author: "Eric F. Richards" <efricha@dimensional.com>
Date: Sat, 07 Jun 2003 14:51:03 -0600
Boy are those guys fast! I ordered one with PS and antenna on Wednesday; I think I phoned to Florida. It was delivered early Friday afternoon! I have my "breakout cable" prepared. Found an old DB25 c
/archives//html/TenTec/2003-06/msg00276.html (11,367 bytes)

29. Re: [TenTec] hp Z3801A GPS Unit (score: 1)
Author: "Eric F. Richards" <efricha@dimensional.com>
Date: Sat, 07 Jun 2003 17:38:21 -0600
Eric responded, in part: Believe, with some searching about have uncovered what the 422 system is about: "A pair of wires is used to carry each signal. The data is encoded and decoded as a differenti
/archives//html/TenTec/2003-06/msg00285.html (12,152 bytes)

30. Re: [TenTec] Re: hp Z3801A Interface Unit (score: 1)
Author: "Eric F. Richards" <efricha@dimensional.com>
Date: Mon, 09 Jun 2003 19:05:42 -0600
Well, the Telebyte Model 260 came today, and...... I can't get the PC and the hp box communicating! So till no joy with the hp GPS box. Either my cables are incorrect, or I don't know how to set up t
/archives//html/TenTec/2003-06/msg00344.html (12,987 bytes)

31. Re: [TenTec] Re: hp Z3801A Interface Unit (score: 1)
Author: "Eric F. Richards" <efricha@dimensional.com>
Date: Tue, 10 Jun 2003 05:52:06 -0600
This thing has been up and running now for a few hours! Solution: Just forget all that 422 to 232 interface stuff, and all the rest! Simply connect as follows: On the PC end, the RS232 connector, whi
/archives//html/TenTec/2003-06/msg00352.html (11,095 bytes)

32. Re: [TenTec] RX-340 and the hp GPS Freq Std. (score: 1)
Author: "Eric F. Richards" <efricha@dimensional.com>
Date: Thu, 12 Jun 2003 09:52:51 -0600
His cable has the exact pinouts I used and are the right ones to use. I did the same. I have the SatStat software which comes with the unit on a CD-ROM disk. I am also assuming that no other changes
/archives//html/TenTec/2003-06/msg00420.html (10,017 bytes)

33. Re: [TenTec] HP Z3801 rack mount (score: 1)
Author: "Eric F. Richards" <efricha@dimensional.com>
Date: Tue, 17 Jun 2003 21:28:43 -0600
I work for a company with very close ties to Agilent and HP. My boss used to be a high muckety-muck at HP years ago before he struck out on his own. He'd never seen any rack like it. Presumably it's
/archives//html/TenTec/2003-06/msg00552.html (8,466 bytes)

34. Re: [TenTec] HP GPS Receiver (score: 1)
Author: "Eric F. Richards" <efricha@dimensional.com>
Date: Fri, 20 Jun 2003 08:06:39 -0600
Thanks - but does the antenna need a ground plane? I suspect it was designed to mount on a vehicle roof which would act as a GP. On the K8CU website, one person mentioned mounting in a pie plate or s
/archives//html/TenTec/2003-06/msg00636.html (12,844 bytes)

35. Re: [TenTec] HP GPS Receiver (score: 1)
Author: "Eric F. Richards" <efricha@dimensional.com>
Date: Fri, 20 Jun 2003 11:18:38 -0600
Thanks for the tip on the patch antenna. I really don't understand these things yet. That will make the mounting easier. I think a couple of pieces of angle aluminum will do it. BTW, do you know if t
/archives//html/TenTec/2003-06/msg00645.html (17,334 bytes)

36. Re: [TenTec] HP GPS Receiver (score: 1)
Author: "Eric F. Richards" <efricha@dimensional.com>
Date: Fri, 20 Jun 2003 23:40:31 -0600
I am using a standard RS-232 DB-9 to DB-25 serial cable (e.g., same as used for a dial up modem). You need a null-modem cable, not straight through. Ironically, because the wire assignments for pins
/archives//html/TenTec/2003-06/msg00667.html (13,329 bytes)

37. Re: [TenTec] HP GPS Receiver (score: 1)
Author: "Eric F. Richards" <efricha@dimensional.com>
Date: Sat, 21 Jun 2003 18:26:20 -0600
At 02:17 PM 6/21/2003 -0400, you wrote: I think it's pretty much conclusive that there is absolutely zero benefit to modify the internal COMM port jumpers to RS-232. Why? Because there's more info on
/archives//html/TenTec/2003-06/msg00674.html (9,693 bytes)

38. Re: [TenTec] HP GPS Receiver (score: 1)
Author: "Eric F. Richards" <efricha@dimensional.com>
Date: Sun, 22 Jun 2003 13:13:47 -0600
And you won't. It will drift around "perfect" and attempt to stay that way but even with an oven, it will be affected by temperature, etc. It also will drift off if it loses lock with the GPS signals
/archives//html/TenTec/2003-06/msg00691.html (13,317 bytes)

39. Re: [TenTec] GPS Antenna feedline (score: 1)
Author: "Eric F. Richards" <efricha@dimensional.com>
Date: Tue, 24 Jun 2003 09:13:39 -0600
It's RF related and that's close enought for me!!! As one of those 'radio guys' at the tower sites, I see these GPS antennas frequently. Paging services use them for syncronization of their transmitt
/archives//html/TenTec/2003-06/msg00726.html (10,036 bytes)

40. Re: [TenTec] DC Power Supply Backup (score: 1)
Author: "Eric F. Richards" <efricha@dimensional.com>
Date: Wed, 21 May 2003 13:23:28 -0600
At 10:02 AM 5/21/2003 -0400, you wrote: I've ordered an Orion and for the first time will be using an outboard DC supply (a used Astron RS-35M is on the way). I often get short power glitches since I
/archives//html/TenTec/2003-05/msg00759.html (13,809 bytes)

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