Ed is correct. The antenna factor of the 95010-1 is 8 dB/m when configured for MIL-STD-461 RE02/RE102. I was talking about the amplifier gain, not the complete antenna. BTW, one of my two 95010-1 antennas came from the UK. The "bloke" from whom I bought it shipped it with four dead dry cell type batteries - I paid to ship those dead batteries across the pond, plus they can break loose easily under stress and then damage the circuit board. I was lucky and only paid the penalty of the high shipping costs; the antenna worked flawlessly with good batteries.
Quoting "Price, Edward" <[email protected]>: > > > > ________________________________ > > From: [email protected] [mailto:[email protected]] On Behalf Of > Julian Jones > Sent: Monday, August 11, 2008 3:36 AM > To: [email protected] > Subject: monopole recommendations > > > we need to get a back up for our EMCO 3301, 41 inch rod antenna. > > > looking for recommendations for what other labs are using. I've > noted the changes MIL 461F brings with grounding the connector > especially. > > I've almost finalised on the A H systems SAS-550-1B has anyone > got / used this one ? any problems to report. > > Rgds > > > > Julian Jones > Hursley EMC Services > Tel: 023 8027 1111 > Mob: 07787 523 607 > > [email protected] <mailto:[email protected]> > Unit 16, Brickfield Lane > Chandlers Ford > EASTLEIGH, Hampshire, SO53 4DP > Company Registration 3301279 > > > > Julian: > > I have been using an SAS-550-1B for about ten years, and I like it quite > a bit. It has an internal battery that gives about 8 hours operation, > almost as long as the venerable old Stoddart 95010-1. The gain flatness > isn't a smooth as the Stoddart, but the sensitivity is a little bit > better (mine averages about -11.3 dB AF; I don't know if that's typical > or I'm just lucky). (Ken Javor mentions the 0 dB factor, but that was > available only when you used the capacitive top-hat and extended the rod > to about 50"; so when a standard calls for a 41" rod, active or passive, > the old Stoddart could only give you a flat 8 dB antenna factor.) The > slightly non-flat AF is no problem with modern acquisition systems; if > your software can handle the wiggly factor of a biconical, the active > rod will seem almost flat in comparison. > > A couple of years ago, I had AHS modify my active rod to allow me the > ability to have an active loop antenna. They changed the top connector > to a type N, added a switch on the side to select rod or loop, and added > some circuitry inside the amplifier box. I can now connect either their > 41" rod or 12" loop to the amplifier base. This is a good bargain if you > need to do both electric & magnetic fields. > > Reliability has been excellent. Battery life is long enough that I don't > have to worry about external power. It is ESD sensitive, so no touching > the exposed rod element! > > Ed Price > [email protected] <blocked::mailto:[email protected]> WB6WSN > NARTE Certified EMC Engineer & Technician > Electromagnetic Compatibility Lab > Cubic Defense Applications > San Diego, CA USA > 858-505-2780 (Voice) > 858-505-1583 (FAX) > Military & Avionics EMC Is Our Specialty > > - > ---------------------------------------------------------------- > This message is from the IEEE Product Safety Engineering Society > emc-pstc discussion list. Website: http://www.ieee-pses.org/ > > To post a message to the list, send your e-mail to [email protected] > > Instructions: http://listserv.ieee.org/request/user-guide.html > > 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] > > All emc-pstc postings are archived and searchable on the web at: > > http://www.ieeecommunities.org/emc-pstc > - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/request/user-guide.html 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] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
