Re: [Repeater-Builder] Omnidirectional antenna into 2m band
This is all most as good as DBC - Original Message - From: Mark Holman [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Saturday, July 24, 2004 7:27 PM Subject: Re: [Repeater-Builder] Omnidirectional antenna into 2m band 6 dBdl-6dB ?? over a Dummy Load ? that is about as corny as a Isotropic Radiator offered for sale on April 1st. never seen that formula ... Mark A. Holman, CRO, AB8RU [EMAIL PROTECTED] - Original Message - From: Jim B. [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Friday, July 23, 2004 4:28 PM Subject: Re: [Repeater-Builder] Omnidirectional antenna into 2m band That's 6 dBdl-6 dB over a dummy load... russ wrote: If any one believes this is 6 DB then would you like to buy a bridge? - Original Message - From: Mark Holman [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Thursday, July 22, 2004 8:34 PM Subject: Re: [Repeater-Builder] Omnidirectional antenna into 2m band Cushcraft Ringo ARX II 6 DB , ever seen any US weather shows ? they have one on the WX storm chaser van also ant has very good broadband freq. range , I own one myself on a 20 ft. teloscopic mast on the ground. Mark A. Holman, CRO, AB8RU [EMAIL PROTECTED] - Original Message - From: yo7mbs [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Wednesday, July 21, 2004 3:28 AM Subject: [Repeater-Builder] Omnidirectional antenna into 2m band I am living into a very bad propagate wave zone. I tried a lot of schemas for antenna but I have problems with the reception. Can anybody help me with a schema for an omnidirectional antenna with best output ( 4 dB). I must mention that I work into 2 m band. I'll prefere an antenna that was tested. Thank you for any advice, yo7mbs Yahoo! Groups Links Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Omnidirectional antenna into 2m band
If any one believes this is 6 DB then would you like to buy a bridge? - Original Message - From: Mark Holman [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Thursday, July 22, 2004 8:34 PM Subject: Re: [Repeater-Builder] Omnidirectional antenna into 2m band Cushcraft Ringo ARX II 6 DB , ever seen any US weather shows ? they have one on the WX storm chaser van also ant has very good broadband freq. range , I own one myself on a 20 ft. teloscopic mast on the ground. Mark A. Holman, CRO, AB8RU [EMAIL PROTECTED] - Original Message - From: yo7mbs [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Wednesday, July 21, 2004 3:28 AM Subject: [Repeater-Builder] Omnidirectional antenna into 2m band I am living into a very bad propagate wave zone. I tried a lot of schemas for antenna but I have problems with the reception. Can anybody help me with a schema for an omnidirectional antenna with best output ( 4 dB). I must mention that I work into 2 m band. I'll prefere an antenna that was tested. Thank you for any advice, yo7mbs Yahoo! Groups Links Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Omnidirectional antenna into 2m band
Right on the money Gregg,! QST will not even list Dbi. There is now a move to rate all in DBD. If you look at the ringo's they are less the unity. Gee less then -0- Most folks (Hams) in the SNJ area say they make great stakes for your tomatoes. smile Neat stuff. A good omni by RFS, DB, A/S and so on would be much better. 73 Russ, W3CH - Original Message - From: Gregg Lengling [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Friday, July 23, 2004 8:34 AM Subject: RE: [Repeater-Builder] Omnidirectional antenna into 2m band Once again we see references to gain without the actually reference pointed out. There is a big difference between dBi (dB over an Isotropic, non-existent antenna) and dBd (dB over a dipole, real antenna). Gregg R. Lengling, W9DHI, Retired Administrator http://www.milwaukeehdtv.org K2/100 S#3075 KX1 S# 57 Member: ARRL, RSGB, RCA, WERA and ORC -Original Message- From: russ [mailto:[EMAIL PROTECTED] Sent: Friday, July 23, 2004 7:29 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Omnidirectional antenna into 2m band If any one believes this is 6 DB then would you like to buy a bridge? - Original Message - From: Mark Holman [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Thursday, July 22, 2004 8:34 PM Subject: Re: [Repeater-Builder] Omnidirectional antenna into 2m band Cushcraft Ringo ARX II 6 DB , ever seen any US weather shows ? they have one on the WX storm chaser van also ant has very good broadband freq. range , I own one myself on a 20 ft. teloscopic mast on the ground. Mark A. Holman, CRO, AB8RU [EMAIL PROTECTED] - Original Message - From: yo7mbs [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Wednesday, July 21, 2004 3:28 AM Subject: [Repeater-Builder] Omnidirectional antenna into 2m band I am living into a very bad propagate wave zone. I tried a lot of schemas for antenna but I have problems with the reception. Can anybody help me with a schema for an omnidirectional antenna with best output ( 4 dB). I must mention that I work into 2 m band. I'll prefere an antenna that was tested. Thank you for any advice, yo7mbs Yahoo! Groups Links Yahoo! Groups Links Yahoo! Groups Links Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Omnidirectional antenna into 2m band
Gee, when did unity become equal to -0- ??? (Unity Gain - A gain of one. That is, the signal is output from a circuit at the same level at which it entered.) From ; http://www.yamaha.co.jp/product/proaudio/homeenglish/faq/glossaries/glossarie/ Therefore, a gain of less than unity is still greater than -0-. My question is, can there be a gain of -0- ??? Kenneth Buley Bullitt County ARES/RACES Coordinator KE4AWY Bullitt County EMA CD-2 Bullitt County Red Cross Disaster Communications BC-6 -Original Message- From: russ [mailto:[EMAIL PROTECTED] Sent: Friday, July 23, 2004 9:09 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Omnidirectional antenna into 2m band snip they are less the unity. Gee less then -0- snip some more Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Omnidirectional antenna into 2m band
At 07:34 AM 7/23/04, Gregg Lengling wrote: Once again we see references to gain without the actually reference pointed out. There is a big difference between dBi (dB over an Isotropic, non-existent antenna) and dBd (dB over a dipole, real antenna). And both seem to be less than dBC (dBCushcraft - gain over a mythical worse-than-isotropic reference). Only partly :-). Roger Grady K9OPO Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Omnidirectional antenna into 2m band
--- Buley, Kenneth L (GE Consumer Industrial) [EMAIL PROTECTED] wrote: Gee, when did unity become equal to -0- ??? (Unity Gain - A gain of one. That is, the signal is output from a circuit at the same level at which it entered.) From ; http://www.yamaha.co.jp/product/proaudio/homeenglish/faq/glossaries/glossarie/ Therefore, a gain of less than unity is still greater than -0-. My question is, can there be a gain of -0- ??? Kenneth Buley Bullitt County ARES/RACES Coordinator KE4AWY Bullitt County EMA CD-2 Bullitt County Red Cross Disaster Communications BC-6 -Original Message- From: russ [mailto:[EMAIL PROTECTED] Sent: Friday, July 23, 2004 9:09 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Omnidirectional antenna into 2m band snip they are less the unity. Gee less then -0- snip some more Unity gain is a gain of one, or 0 dB. When referring to antenna gain, most people would reference it to X dB over a dipole/quarter wave/isotropic/rubber duckie/wet noodle/dummy load/whatever. So, when someone says it has zero gain (no gain in dB), it must be the same as the reference (whatever that is). If it has less than zero (dB) gain, then the antenna would show a loss as opposed to the reference antenna. A good example would be a 2M rubber duck compared to a dipole. Here we see that the duck exhibits less than zero gain or in other words, a loss. It's confusing because people don't always put the dB after it. Sometimes we're as bad as the antenna manufacturers. :) Joe __ Do you Yahoo!? Vote for the stars of Yahoo!'s next ad campaign! http://advision.webevents.yahoo.com/yahoo/votelifeengine/ Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Omnidirectional antenna into 2m band
That's 6 dBdl-6 dB over a dummy load... russ wrote: If any one believes this is 6 DB then would you like to buy a bridge? - Original Message - From: Mark Holman [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Thursday, July 22, 2004 8:34 PM Subject: Re: [Repeater-Builder] Omnidirectional antenna into 2m band Cushcraft Ringo ARX II 6 DB , ever seen any US weather shows ? they have one on the WX storm chaser van also ant has very good broadband freq. range , I own one myself on a 20 ft. teloscopic mast on the ground. Mark A. Holman, CRO, AB8RU [EMAIL PROTECTED] - Original Message - From: yo7mbs [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Wednesday, July 21, 2004 3:28 AM Subject: [Repeater-Builder] Omnidirectional antenna into 2m band I am living into a very bad propagate wave zone. I tried a lot of schemas for antenna but I have problems with the reception. Can anybody help me with a schema for an omnidirectional antenna with best output ( 4 dB). I must mention that I work into 2 m band. I'll prefere an antenna that was tested. Thank you for any advice, yo7mbs Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Omnidirectional antenna into 2m band
Buley, Kenneth L (GE Consumer Industrial) wrote: Gee, when did unity become equal to -0- ??? (Unity Gain - A gain of one. That is, the signal is output from a circuit at the same level at which it entered.) From ; http://www.yamaha.co.jp/product/proaudio/homeenglish/faq/glossaries/glossarie/ Therefore, a gain of less than unity is still greater than -0-. My question is, can there be a gain of -0- ??? Kenneth Buley Bullitt County ARES/RACES Coordinator KE4AWY Bullitt County EMA CD-2 Bullitt County Red Cross Disaster Communications BC-6 a gain of 1 equals 0dB. hmm...I guess a true gain of 0 would be no output for any input! -- Jim Barbour WD8CHL Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Omnidirectional antenna into 2m band
Think Division. A gain of zero is probably illegal anyway and subject to fines by the FCC... :) John Clark - KI4AWK Thomasville, GA [EMAIL PROTECTED] - Original Message - From: Jim B. [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Friday, July 23, 2004 4:41 PM Subject: Re: [Repeater-Builder] Omnidirectional antenna into 2m band Buley, Kenneth L (GE Consumer Industrial) wrote: Gee, when did unity become equal to -0- ??? (Unity Gain - A gain of one. That is, the signal is output from a circuit at the same level at which it entered.) From ; http://www.yamaha.co.jp/product/proaudio/homeenglish/faq/glossaries/glossarie/ Therefore, a gain of less than unity is still greater than -0-. My question is, can there be a gain of -0- ??? Kenneth Buley Bullitt County ARES/RACES Coordinator KE4AWY Bullitt County EMA CD-2 Bullitt County Red Cross Disaster Communications BC-6 a gain of 1 equals 0dB. hmm...I guess a true gain of 0 would be no output for any input! -- Jim Barbour WD8CHL Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
