Hi Ken, We used one of these (I believe from EMCO) back when I started with HP in the late 1980s. It sure seemed to me it was just glued, as I don’t recall any fasteners. The joint seemed to be flush with the cone. It’s long gone, so no pictures.
Ken _______________________ I'm here to help you succeed! Feel free to call or email with any questions related to EMC or EMI troubleshooting - at no obligation. I'm always happy to help! Kenneth Wyatt Wyatt Technical Services LLC 56 Aspen Dr. Woodland Park, CO 80863 Phone: (719) 310-5418 Web Site <http://www.emc-seminars.com/> | Blog <https://design-4-emc.com/> The EMC Blog (EDN) <https://www.edn.com/electronics-blogs/4376432/The-EMC-Blog> Subscribe to Newsletter <http://www.emc-seminars.com/Newsletter/Newsletter.html> Connect with me on LinkedIn <https://www.linkedin.com/in/kennethwyatt/> > On Dec 9, 2020, at 4:04 PM, Ken Javor <ken.ja...@emccompliance.com> wrote: > > List Members with an EMI test facility, > > Recently purchased subject antenna, which is damaged. > > See attached image. Tensor made the EMCO log-spirals before EMCO acquired > them, way back. I had an opportunity to buy the antenna in the image, and it > is the same as an EMCO 3103. Unfortunately, they packed it up like it was > indestructible, and it wasn’t – the box was intact, but the antenna within > had come apart as can be seen. The back plate was originally glued in, but > there are also holes for fasteners, visible in the image. None of the > fasteners were in the antenna or even in the box. It could be that the > fasteners were only there during assembly to hold the back plate in place > long enough for the glue to set. I got with ETS/Lindgren to see assembly > drawings for their log-spirals, but that hasn't been fruitful. I am reaching > out to the list membership for a description of how the EMCO or ETS/Lindgren > 3101 or better yet EMCO or ETS/Lindgren 3103 is put together. The main > question is whether or not there are any fasteners, and if so, metal or > nylon, or? > > Also any evidence of glue, or how the back plate stays in place. > > I have two uhf log-spirals like the EMCO 3101, but one is from > Electro-Metrics, and the other Stoddart/Singer, and neither show any evidence > of what holds them together, plus it wouldn't necessarily apply, anyway. > > If there are fasteners, a close-up image would be really helpful for me to > figure out what I need to get. > > Thank you, > > Ken Javor > Phone: (256) 650-5261 > - > ---------------------------------------------------------------- > 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 > <emc-p...@ieee.org <mailto:emc-p...@ieee.org>> > All emc-pstc postings are archived and searchable on the web at: > http://www.ieee-pses.org/emc-pstc.html > <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/ > <http://product-compliance.oc.ieee.org/> can be used for graphics (in > well-used formats), large files, etc. > Website: http://www.ieee-pses.org/ <http://www.ieee-pses.org/> > Instructions: http://www.ieee-pses.org/list.html (including how to > unsubscribe) <http://www.ieee-pses.org/list.html> > List rules: http://www.ieee-pses.org/listrules.html > <http://www.ieee-pses.org/listrules.html> > For help, send mail to the list administrators: > Scott Douglas <sdoug...@ieee.org <mailto:sdoug...@ieee.org>> > Mike Cantwell <mcantw...@ieee.org <mailto:mcantw...@ieee.org>> > For policy questions, send mail to: > Jim Bacher <j.bac...@ieee.org <mailto:j.bac...@ieee.org>> > David Heald <dhe...@gmail.com <mailto:dhe...@gmail.com>> > <Tensor 4103.jpg> - ---------------------------------------------------------------- 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 <emc-p...@ieee.org> 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 <sdoug...@ieee.org> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
