Re: [Flexradio] Artificial ground
Hey Bob -- Wonder if you really need it. All the artificial ground is, is a series LC and a relative current indicator. Hard to believe you couldn't put one together out of your junkbox in a few minutes. 73 Frank AB2KT Bob Tracy wrote: Anyone have any experience with the MFJ-931 Artificial Ground?
Re: [Flexradio] Artificial ground
I've got one. It works OK. I installed 2-4 radials that were 1/4 wavelength on the lowest frequency I was working when I had unbalanced antennas. True, it is just an LC circuit, but it is convenient for establishing a counterpoise. I eventually went to balanced antennas where a RF ground was not really necessary. If you want mine, e-mail me off list. You can have it for a steal. -Tim --- Tim Ellison ( [EMAIL PROTECTED] ) Integrated Technical Services ( http://www.itsco.com ) -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bob Tracy Sent: Tuesday, January 10, 2006 5:43 PM To: FlexRadio Reflector Subject: [Flexradio] Artificial ground Hi, Anyone have any experience with the MFJ-931 Artificial Ground? I'm at wits end in this 2nd story shack trying to get rid of the RFI in my SDR-1000 and I'm ready to try anything up to and including witchcraft. Anyone got one for sale? Bob, K5KDN ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz
Re: [Flexradio] Artificial ground
I've heard good reports about them, but have never used one personally. I'm in kind of a similar situation because of the design of my house (kind of split level on the side of a hill). My shack window is 8' above ground, but I use an entry panel in the window that is a copper plate with coax bulkhead feedthru barrels mounted in a wood frame that the window sash closes onto rather than the normal sill. The panel is connected to my ground system via a length of 6 wide 0.030 thick copper strap. The strap is bolted to the entry panel and silver soldered to the 3 Ga. bonding cable that ties my 3 ground rods together (there's also about 150' of 12 Ga. radials also silver soldered to the 3 Ga. bonding cable and run out into the yard burried about 3 deep). On the inside short piece of the same 6 strap connects to a 2 wide 0.125 thick copper ground buss that runs down the wall behind the desk. All equipment is bonded to the ground bar with either 1 or 3/8 wide braid. Seems to work. Bill AD5OL Bob Tracy [EMAIL PROTECTED] 01/10/06 04:42PM Hi, Anyone have any experience with the MFJ-931 Artificial Ground? I'm at wits end in this 2nd story shack trying to get rid of the RFI in my SDR-1000 and I'm ready to try anything up to and including witchcraft. Anyone got one for sale? Bob, K5KDN ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz
