Long live XP!!

73,
Art N4AWP

Another option is to build your own from a kit. I did and it was fun to personalize it. Works great .
Art
http://www.w5jh.net/Black_Widow.htm

You can find what you need here and it is free!
http://icomrecievers.narod.ru/

I would like a copy of the equations if yu don't mind.
Thanks
Art
aparrisjr@carolina.rr.com

Very well may be a microphone connection but it will be in the rig as I tried 3 different mics. Each piece of equipment has a seperate wire to the buss bar. Not daisy chained.
Thanks
Art

Thanks to all.I put up a 20M dipole and connected the 718 to it. The radio was on a table at the door of the shack, about 10' from the desk. Transmited the ProII into a dummy load, no help. Changed positions and the problem followed the ProII. I can't explain the problem being reported in both radios but the 718 is clear. This was the first time I listened to it. It sounds very raspy. I am going to send the ProII to Icom MI for repair. I also bonded all the grounds together again.
Thanks for all your help
Art

Thanks
I tried with no grounds and the same results. Also two antennas, OCF dipole and a Triband beam. Coax direct to the radio with no change. I have on my "Try" list the dummy load suggestion. I have a intercom between the shack and house. It is one of thoes that plugs into the house AC. A friend brought that to my attention yesterday. I will try these ideas today.
Thanks for your help.
Art

TNX Gerald
Don't need to watch for the "COWS". The buss bar is 6" long and is from a breaker box. I can change to copper??? Or,I can bond them together.

I have a severe problem with RF in my transmit audio.
This is a list of things I have done:
Ground for equipment is a buss bar on the back of the desk with all equipment to it w/ #12 solid wire and a #6 solid copper wire through the wall 12' to a 8' ground rod.
The tower is 5' away from this rod and 3' from the building (building has a metal roof). It is on a seperate ground rod.
The power panel is on a separate ground rod.
All ground rods have #6 solid wire and I drilled a hole in the top, put the wire in it and brazed it to the rod. No worries about a good connection.
I bonded all 3 rods together and then disconnected them after it made no difference.
I tried 3 different microphones. 2 Heil and the stock hand mic.
Tried 2 different radios. Icon 718 & a 756 Pro II
Connected the antenna direct to the radio. Nothing but the power supply and antenna on both radios.
Connected the power to my truck battery.
Grounded the metal roof to the equipment ground and then to the power ground. This made it WORSE!!
It gets worse the longer I transmit.
Tried 2 different power supplies, both switching.
Thinking about putting the roof on a separate gnd rod and also moving a rig and a different antenna outside to try that. I have ordered some clamp on ferrite chokes to put on the connecting lines. I had one and put it on the power supply but no difference.
The only thing that has changed it is when the roof is grounded,it was worse. Acts like something charging and then after no xmit for a few minutes it is not as bad. They say the audio is very raspy and the longer it goes it gets to the point you can only understand a few words.
I would appreciate any GOOD ideas.
Thanks
Art N4AWP

Thanks to all for your response. A lot of good information.I think I will use RG 213 for peace of mind and not have to make any connections that can be a source of problems.
Thanks again & 73's
Art

I am installing a 56' tower with an Cushcraft AS3 Tri Band beam and 4' above it a Cushcraft 14410S 2 meter beam. I plan to wind a coax choke for the HF beam. I would like to use LMR 400 for both antennas but have read about the center conductor migrating through the foam and creating SWR problems. Would it be better to us RG-213 for both antennas or do the newer products not have this problem? I will need 100' for each antenna and would rather not use RG8X.
 Thanks for your help.
Art Parris N4AWP

Thanks Randy.
I will send you what I have.

Thanks for the info. Makes sense now. I do not have a schematic or parts list. I need the the same as you. If I find one I will let you know and you the same.
tnx Art

I have a "C" model with QSK. It also has a High / Low switch for the fan. The fan is very loud and am trying to find a replacement without much luck. Can you help?? It is a Nidec Alpha V TA450 Model A 30045-10 fan. It is two speed , 117VAC @ .26/.21amp.

Try Bill Edwards at Omega Electronics. He worked for Amp Supply and may have the parts you need.
Art