Re: [IRCA] Measuring D-C resistance of ground rods to earth

2007-07-18 Thread Patrick Martin
Bruce, Mentioning CBK, I find I hear them generally 24/7 here off the Eastern beverage, Summer and Winter. It is fairly poor during the Summer but still heard. In the Winter like gangbusters and that is well over 1,000 miles from here. I used to use KFI, but after they lost their big tower, the

Re: [IRCA] Measuring D-C resistance of ground rods to earth

2007-07-18 Thread nhp
Quoting Patrick Martin [EMAIL PROTECTED]: Mentioning CBK, I find I hear them generally 24/7 here off the Eastern beverage, Summer and Winter. A big surprise many years ago was hearing CBK at 2 PM local on a July afternoon here in Victoria. I was testing out a Sanserino loop I'd built for

Re: [IRCA] Measuring D-C resistance of ground rods to earth

2007-07-18 Thread Patrick Martin
Nick, Isn't the tx site for CBK still in Watrous? I know it used to be there. That 50 KW ND on 540 must cover most of Central Canada 24/7 hands down. 73, Patrick Patrick Martin KAVT Reception Manager ___ IRCA mailing list IRCA@hard-core-dx.com

Re: [IRCA] Measuring D-C resistance of ground rods to earth

2007-07-17 Thread bportzer
-- Original message -- From: Nick Hall-Patch [EMAIL PROTECTED] . Most of the traditional methods use power line frequencies; however, I've used the three point method using an AC generator at various frequencies up to 5 MHz, and ended up getting really

Re: [IRCA] Measuring D-C resistance of ground rods to earth

2007-07-14 Thread Patrick Martin
Chuck, OK, I have measured the resistance needed to get the null with the SW EWE. It falls in the 950 ohm area. Unless you could get 950 ohms, you would not get the null needed for the EWE to work properly. In comparison, I have put a pot at the end of the beverage and tried to find the best in a

Re: [IRCA] Measuring D-C resistance of ground rods to earth

2007-07-14 Thread Chuck Hutton
Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Charles A Taylor Sent: Friday, July 13, 2007 12:13 PM To: irca@hard-core-dx.com; [EMAIL PROTECTED] Subject: [IRCA] Measuring D-C resistance of ground rods to earth DX Crew, Mr and Mrs. America, all the ships at sea and pesky

Re: [IRCA] Measuring D-C resistance of ground rods to earth

2007-07-14 Thread Nick Hall-Patch
At 05:30 14/07/2007, Chuck wrote: You might want to do a Google for three point method and fall of potential. These are the two standard methods for measuring grounding resistance. You should easily find tutorials from manufacturers of testing equipment.

[IRCA] Measuring D-C resistance of ground rods to earth

2007-07-14 Thread Charles A Taylor
At 10:28 AM 7/14/2007 -0400, you wrote: Chuck, Chuck, Down below at #, I meant to write resistance of the ground. Sure as shootin' someone will think old Chas has jumped the track again. See my short-short reply to Larry Helms about this. I do want to try a metallic return and have enough

[IRCA] Measuring D-C resistance of ground rods to earth

2007-07-13 Thread Charles A Taylor
DX Crew, Mr and Mrs. America, all the ships at sea and pesky CEs who are snooping on this reflector: I wanted to get a good handle on the D-C or A-C resistance to ground of a 8-foot driven ground rod here on the coastal plains of North Carolina. I first took the gutless route and measured the