I'm sorry to hear your story. A company I once worked for was screwed over by a government controlled Foreign company so I know what you are talking about.
I thought 9913 coax is RG-8, or is RG8/U different than RG-8. In any case, we use 3/4" Heliax cable on our 10M site which runs from penetration to ground floor. Then RG8U from there on each end. The Heliax helps a lot to reduce our cable losses. But we still have about 6 meter of flex cable at the antenna end. You are not the only one who mentioned making new correction factors an issue. We do all our own correction factors on amps, cables, attenuators, etc.. We wrote a simply Labview program to factor out the setup and generates the correction factors in a comma delimited file that gets read in by our Test Software which programs it directly into our receiver. It would take no more than 30 minutes to set it up and run that test. I generate a combined correction factor for the pre-amp and coax from the antenna to the receiver. Not a big deal. Thanks for everyone's suggestions. I have been downloading Datasheets all day. Getting some really good ideas. The Other Brian -----Original Message----- From: Cortland Richmond [mailto:[email protected]] Sent: Wednesday, March 16, 2016 3:24 PM To: [email protected] Subject: Re: [PSES] Pre-Amp mounted to antenna On 3/16/2016 1:16 PM, Kunde, Brian wrote: > We currently have a 22dB pre-amp which is fine for class A levels but > a close to 10dB+ above the noise floor near 1Ghz for class B. Moving > the amp to the antenna should gain us several dB due to cable loss. Back in the '90's, I spent some of my own funds to buy 9913 to replace RG-8 on my employer's 10-meter OATS. It helped get the noise floor below the limit line up in the high VHF frequencies, and putting the 8447D at the antenna helped even more. In any event, I got slapped down when they decided not to make new correction factor tables, and though they kept the 9913, we put the 8447 back in the control shack with an attenuator ahead of it to prevent overload from the higher ambient signals that reached the control room. That test site went away when they closed the Fountain Valley manufacturing facility, so I reeled up the coax and took it home with me. After the Koreans took over, I resigned to find work elsewhere; many of my coworkers did the same thing in the next year or two, and AST Research went bankrupt as American workers met and fled from Korean management. C'est la vie. Call it another page in the history of American high-tech industry. Cortland Richmond - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]> ________________________________ LECO Corporation Notice: This communication may contain confidential information intended for the named recipient(s) only. If you received this by mistake, please destroy it and notify us of the error. Thank you. - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
