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Total 10 documents matching your query.

1. Band Reject Coaxial Stubs (score: 1): Author: k7ox@usa.pipeline.com (Gary D. Elliott); Date: Tue, 8 Oct 1996 23:07:33 GMT; I would like to pick the brain of the experts - I would like to make up some coaxial stubs for field day next year to keep the 40 meter station out of the 20 meter station and the 20 phone station ou; /archives//html/Towertalk/1996-10/msg00094.html (8,050 bytes)
2. Band Reject Coaxial Stubs (score: 1): Author: kg8qt@ix20.ix.netcom.com (Martin G. Mendelson III); Date: Tue, 08 Oct 1996 20:40:45 -0400; Gary, if you realy want to go that route OK. I found a company in Indiana, I believe called I.C.E. (Industrial Communications Engineers) that markets them for individual Ham bands or one for all ham; /archives//html/Towertalk/1996-10/msg00096.html (9,553 bytes)
3. Band Reject Coaxial Stubs (score: 1): Author: km9p@contesting.com (Bill Fisher, KM9P); Date: Tue, 8 Oct 1996 21:16:12 -0400 (EDT); You can use a 1/4 wave shorted 40M stub on the 40M station to keep 40M RF out of 20 meters. Use two of the seperated by 1/4 wave of coax for 20M and you will dramatically increase the rejection. I us; /archives//html/Towertalk/1996-10/msg00097.html (8,820 bytes)
4. Band Reject Coaxial Stubs (score: 1): Author: fisher@hp-and2.an.hp.com (Tony Brock-Fisher); Date: Wed, 9 Oct 1996 09:20:45 -0400; Yes. Depends on the cable quality you use. RG-59 is lowsy. RG-213 will give about 20-25 db deep notches. -Tony, K1KP, fisher@hp-and2.an.hp.com -- FAQ on WWW: http://www.contesting.com/towertalkfaq.h; /archives//html/Towertalk/1996-10/msg00104.html (7,767 bytes)
5. Band Reject Coaxial Stubs (score: 1): Author: seay@alaska.net (Del Seay); Date: Wed, 09 Oct 1996 07:23:36 -0700; I read with interest, KM9Ps note on his use of stubs. - Gotta question for you guys. Bill uses the stubs on the interferring line, ie: stubs on the 20 meter line to eliminate interferance to the othe; /archives//html/Towertalk/1996-10/msg00107.html (8,021 bytes)
6. Band Reject Coaxial Stubs (score: 1): Author: fisher@hp-and2.an.hp.com (Tony Brock-Fisher); Date: Wed, 9 Oct 1996 12:34:30 -0400; Del asks: is overload/i'mod etc in the 20 meter station. Minimizing the amount of rf from the offending station would be the logical choice. What am I missing? The answer is that the purpose of a stu; /archives//html/Towertalk/1996-10/msg00109.html (8,503 bytes)
7. Band Reject Coaxial Stubs (score: 1): Author: broz@csn.net (John Brosnahan); Date: Wed, 9 Oct 1996 11:24:06 -0600; You can't assume that 40M is clean -- it never is. So you will really need both 20M and 40M filters. Typical transmitters only reduce their 2nd harmonic by 40-50 dB leaving a lot of signal on 20M fro; /archives//html/Towertalk/1996-10/msg00111.html (10,204 bytes)
8. Band Reject Coaxial Stubs (score: 1): Author: seay@alaska.net (Del Seay); Date: Wed, 09 Oct 1996 11:27:20 -0700; Hi John: Your comments all agree with me, except - the prudent approach is to clean up the transmitter outputs prior to ever looking at the stub issue! First priority would be to properly filter all; /archives//html/Towertalk/1996-10/msg00113.html (8,283 bytes)
9. Band Reject Coaxial Stubs (score: 1): Author: seay@alaska.net (Del Seay); Date: Wed, 09 Oct 1996 11:19:32 -0700; Hi Tony. Not sure I can buy that explaination. Coaxial stubs are not a very good way of cleaning up spurious (or unwanted) energy. They are extremely broad, with only 20-25 db of attenuation at an ab; /archives//html/Towertalk/1996-10/msg00114.html (8,638 bytes)
10. Band Reject Coaxial Stubs (score: 1): Author: fisher@hp-and2.an.hp.com (Tony Brock-Fisher); Date: Wed, 9 Oct 1996 15:19:35 -0400; Au contraire! Stubs are very effective, and they handle the high power of the amp output more easily than lumped constant filters. They provide attenuation on harmonicly related bands - which is just; /archives//html/Towertalk/1996-10/msg00116.html (7,891 bytes)

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