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1. [AMPS] More Relevant SWR FINAL EXAM (score: 1): Author: jerry@k9gd.com (Jerry K9GD); Date: Mon, 11 Oct 1999 11:24:46 -0500; --==_-1272463347==_ma== Content-Type: text/plain; charset="us-ascii" ; format="flowed" Joe Ham has a brand new amplifier that he plans to use exclusively on 14.225 MHz. His antenna is a beam that doe; /archives//html/Amps/1999-10/msg00370.html (11,694 bytes)
2. [AMPS] More Relevant SWR FINAL EXAM (score: 1): Author: measures@vcnet.com (measures); Date: Mon, 11 Oct 1999 10:06:50 -0700; ? What is a 50-ohm isolator? thanks - Rich..., 805.386.3734, www.vcnet.com/measures. -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submissions: amps@contesting.com Administrative requests: a; /archives//html/Amps/1999-10/msg00371.html (8,434 bytes)
3. [AMPS] More Relevant SWR FINAL EXAM (score: 1): Author: mgilmer@gnlp.com (Gilmer, Mike); Date: Mon, 11 Oct 1999 13:10:15 -0400; How big would one be at 14 MHz? (!) Mike N2MG On Monday, October 11, 1999 1:07 PM, measures [SMTP:measures@vcnet.com] wrote: at 50 -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submissions: a; /archives//html/Amps/1999-10/msg00372.html (8,888 bytes)
4. [AMPS] More Relevant SWR FINAL EXAM (score: 1): Author: w2ge@home.com (Phil Levin W2GE); Date: Mon, 11 Oct 1999 13:12:41 -0400; Now your talking! It's important to make things relevant to everyday life, or the kids today lose interest! All I can say, is that is so funny that I was laughing and crying out loud.... to quote "I; /archives//html/Amps/1999-10/msg00373.html (10,052 bytes)
5. [AMPS] More Relevant SWR FINAL EXAM (score: 1): Author: mgilmer@gnlp.com (Gilmer, Mike); Date: Mon, 11 Oct 1999 13:37:49 -0400; Yes Mauri. Some of us are showing our HF biases :) Mike N2MG used on on match at a 50 -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submissions: amps@contesting.com Administrative requests: a; /archives//html/Amps/1999-10/msg00376.html (9,528 bytes)
6. [AMPS] More Relevant SWR FINAL EXAM (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Mon, 11 Oct 1999 13:34:38 -0500; Rich, you don't know much about RF, do you? An isolator is a device that is typically used at higher frequencies than HF that effectively makes any load "look" like 50 Ohms. Now I KNOW you'll find so; /archives//html/Amps/1999-10/msg00378.html (9,848 bytes)
7. [AMPS] More Relevant SWR FINAL EXAM (score: 1): Author: phil@vaxxine.com (Phil T. (VA3UX)); Date: Mon, 11 Oct 1999 21:27:38 -0400; Ah, Rich didn't criticize anything Jon...he just asked a question. He asked because "isolator" probably isn't part of the common jargon in RF circles for a device that does what you describe...."atte; /archives//html/Amps/1999-10/msg00389.html (10,587 bytes)
8. [AMPS] More Relevant SWR FINAL EXAM (score: 1): Author: measures@vcnet.com (measures); Date: Mon, 11 Oct 1999 19:39:03 -0700; ? I used isolators when I worked in a calibration lab. They had two waveguide connections, and they had no characteristic Z. - Rich..., 805.386.3734, www.vcnet.com/measures. -- FAQ on WWW: http://ww; /archives//html/Amps/1999-10/msg00390.html (10,229 bytes)
9. [AMPS] More Relevant SWR FINAL EXAM (score: 1): Author: w7iuv@axtek.com (Larry Molitor); Date: Tue, 12 Oct 1999 02:39:39 +0100; An "isolator" is a "circulator" with a built-in termination on one of the ports. It does not have to be 50 ohms, but usually is because it's almost always used at microwave. A circulator (or Isolator; /archives//html/Amps/1999-10/msg00392.html (10,010 bytes)
10. [AMPS] More Relevant SWR FINAL EXAM (score: 1): Author: hbrown@voicenet.com (Harry Brown); Date: Mon, 11 Oct 1999 23:07:40 -0400; An isolator is a very common rf device in the uhf and microwave business. It is a circulator with one terminal that has a 50 ohm load (you frequently= can not see the load but it's in there). It has; /archives//html/Amps/1999-10/msg00393.html (13,440 bytes)
11. [AMPS] More Relevant SWR FINAL EXAM (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Tue, 12 Oct 99 09:54:35 -0500; No characteristic Z huh, Rich? Or perhaps you just didn't know what that characteristic Z was? A waveguide has a characteristic impedance at a given frequency. The math is a little too complicated to; /archives//html/Amps/1999-10/msg00402.html (10,631 bytes)
12. [AMPS] More Relevant SWR FINAL EXAM (score: 1): Author: measures@vcnet.com (measures); Date: Tue, 12 Oct 1999 08:57:56 -0700; There was no characteristic Z indicated on the isolators, Jon. - Rich..., 805.386.3734, www.vcnet.com/measures. -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submissions: amps@contesting.com; /archives//html/Amps/1999-10/msg00408.html (9,207 bytes)
13. [AMPS] More Relevant SWR FINAL EXAM (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Tue, 12 Oct 99 11:26:01 -0500; Very possible with waveguide. 73, Jon KE9NA -- The Second Amendment is NOT about duck hunting! Jon Ogden jono@enteract.com www.qsl.net/ke9na "A life lived in fear is a life half lived." -- FAQ on WWW; /archives//html/Amps/1999-10/msg00410.html (9,141 bytes)
14. [AMPS] More Relevant SWR FINAL EXAM (score: 1): Author: af006@lafn.org (Harv Shore); Date: Tue, 12 Oct 1999 10:39:05 -0700; The so called ISOLATOR is a name given to a three port CIRCULATOR with the third port terminated in a load. Port 1 goes to the transmitter. Port 2 to the antenna. Port 3 to the termination. At UHF an; /archives//html/Amps/1999-10/msg00412.html (12,653 bytes)
15. [AMPS] More Relevant SWR FINAL EXAM (score: 1): Author: itr@nanoteq.co.za (Ian Roberts); Date: Wed, 13 Oct 1999 07:49:45 +0200; Rich, rather ask this question, to floor the guy: "what is the characteristic impedance of waveguide?" Ian ZS6BTE -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submissions: amps@contesting.co; /archives//html/Amps/1999-10/msg00420.html (9,379 bytes)
16. [AMPS] More Relevant SWR FINAL EXAM (score: 1): Author: itr@nanoteq.co.za (Ian Roberts); Date: Wed, 13 Oct 1999 07:56:44 +0200; Haw haw Ian ZS6BTE -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com Problems: owner-amps@contesting.com Sear; /archives//html/Amps/1999-10/msg00421.html (8,978 bytes)
17. [AMPS] More Relevant SWR FINAL EXAM (score: 1): Author: measures@vcnet.com (measures); Date: Wed, 13 Oct 1999 07:20:00 -0700; How about it, Jon? - Rich..., 805.386.3734, www.vcnet.com/measures. -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submissions: amps@contesting.com Administrative requests: amps-REQUEST@conte; /archives//html/Amps/1999-10/msg00424.html (9,132 bytes)
18. [AMPS] More Relevant SWR FINAL EXAM (score: 1): Author: measures@vcnet.com (measures); Date: Wed, 13 Oct 1999 07:20:02 -0700; Delightsome, Ian. - Rich..., 805.386.3734, www.vcnet.com/measures. -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contes; /archives//html/Amps/1999-10/msg00425.html (8,502 bytes)
19. [AMPS] More Relevant SWR FINAL EXAM (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Wed, 13 Oct 1999 19:17:29 -0500; According to the textbook that I quoted from the characteristic impedance of a waveguide is typically unity. I quoted that in my post to you previously. If you wish for me to quote again the referenc; /archives//html/Amps/1999-10/msg00435.html (8,878 bytes)
20. [AMPS] More Relevant SWR FINAL EXAM (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Wed, 13 Oct 1999 19:36:44 -0500; Rich, I forgot to also ask you. Which waveguide mode do you want the impedance for? And is the waveguide below or above cutoff for that mode? Also, is the waveguide dielectrically loaded or is it air; /archives//html/Amps/1999-10/msg00436.html (8,742 bytes)

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