- 1. [TowerTalk] One DB (score: 1)
- Author: David Gilbert <xdavid@cis-broadband.com>
- Date: Tue, 29 May 2007 16:18:39 -0700
- Someone on the Towertalk reflector recently asked whether an additional one db of antenna gain was worth pursuing. The answer, of course, was that it all depends upon how close you are to the noise l
- /archives//html/Towertalk/2007-05/msg00592.html (9,712 bytes)
- 2. Re: [TowerTalk] One DB (score: 1)
- Author: "WA3GIN in Alex. City, VA" <wa3gin@comcast.net>
- Date: Tue, 29 May 2007 19:57:11 -0400
- I think your efforts should be rewarded but the test is flawed. Try using QRP and an attenuator. Get a distant station to record the two transmissions...one with and one without the 1db attenuator in
- /archives//html/Towertalk/2007-05/msg00593.html (8,138 bytes)
- 3. Re: [TowerTalk] One DB (score: 1)
- Author: "James C. Garland" <4cx250b@muohio.edu>
- Date: Tue, 29 May 2007 18:18:59 -0600
- Hi Dave, I don't see why his test is flawed. Seems pretty creative to me. Your suggestion probably woudn't yield consistent results because of QSB. Jim W8ZR ** Jim Garland Santa Fe, NM www.w8zr.net *
- /archives//html/Towertalk/2007-05/msg00594.html (8,644 bytes)
- 4. Re: [TowerTalk] One DB (score: 1)
- Author: Jim Lux <jimlux@earthlink.net>
- Date: Tue, 29 May 2007 17:49:57 -0700
- This too, isn't necessarily a fair test. It will changed the received SNR at the receiver IF the atmospheric noise dominates over the receiver noise, so in that sense it's fair as a test of "is a dB
- /archives//html/Towertalk/2007-05/msg00595.html (8,830 bytes)
- 5. Re: [TowerTalk] One DB (score: 1)
- Author: "jeremy-ca" <km1h@jeremy.mv.com>
- Date: Tue, 29 May 2007 21:01:07 -0400
- Many years ago I was periphally involved (did a lot of the grunt work) with the first ham EME QSO by Sam Harris, W1FZJ/W1BU and W6AY at Eimac, on 1296. All the trials leading up to and including the
- /archives//html/Towertalk/2007-05/msg00597.html (10,151 bytes)
- 6. Re: [TowerTalk] One DB (score: 1)
- Author: David Gilbert <xdavid@cis-broadband.com>
- Date: Tue, 29 May 2007 18:39:14 -0700
- Let's clarify some things here before this starts wandering all over the place. 1. I wasn't trying to splits tenths of a db in terms of impact. It was intended to be a simple relative comparison with
- /archives//html/Towertalk/2007-05/msg00598.html (10,472 bytes)
- 7. Re: [TowerTalk] One DB (score: 1)
- Author: "WA3GIN in Alex. City, VA" <wa3gin@comcast.net>
- Date: Tue, 29 May 2007 21:50:38 -0400
- Yes, I agree but it is more real world than MP3 files...at least we have the chance to hear the effect of receiver selectivity/sensitivity, receive antenna characteristics as well as receiver AGC, et
- /archives//html/Towertalk/2007-05/msg00599.html (9,669 bytes)
- 8. Re: [TowerTalk] One DB (score: 1)
- Author: David Gilbert <xdavid@cis-broadband.com>
- Date: Tue, 29 May 2007 19:18:32 -0700
- None of that has anything to do with my posting. I only referred to the original question posted here a couple of weeks ago (by someone whose call I've since forgotten), which was "what is an additio
- /archives//html/Towertalk/2007-05/msg00600.html (11,641 bytes)
- 9. Re: [TowerTalk] One DB (score: 1)
- Author: "Bob Maser" <bmaser@tampabay.rr.com>
- Date: Tue, 29 May 2007 22:25:39 -0400
- 1 db when you're already 40 over 9 makes no difference. If you're only S1 then 1 db is valuable. It's the ratio that matters. Bob W6TR -- Original Message -- From: "David Gilbert" <xdavid@cis-broadba
- /archives//html/Towertalk/2007-05/msg00601.html (13,004 bytes)
- 10. Re: [TowerTalk] One DB (score: 1)
- Author: "Clive Whelan" <clive.whelan@btinternet.com>
- Date: Wed, 30 May 2007 09:53:11 -0000
- Exactly right Bob, and there is a-l-w-a-y-s somewhere on the planet where you are S1 ( I am S1 in more places than most!), which is why ( especially in contests) that every dB counts. The more intere
- /archives//html/Towertalk/2007-05/msg00605.html (13,874 bytes)
This search system is powered by
Namazu