Re: [Repeater-Builder] Re: PA question
One time I saw a listing for a indoor CB antenna that claimed to have better performance due to resistive technology as compared to outdoor antennas. The antenna was made of two pieces of wire that looked like a UHF TV bow-tie antenna. Each wire was connected to a 100 ohm carbon resistor which were fed in parrellel, thus creating 50 Ohms. Neil McKie [EMAIL PROTECTED] wrote: It is simply amazing what hams can be sold. Sort of reminds me of the early days of the CB world - what the CB'ers were sold ... groan ... Neil - WA6KLA Chris Peterson wrote: But we make such a big deal out of having a 7.5 DB antenna rather than a 3.5 DB antenna, and that's only 4.5 DB... :-) 73, Chris, KG0BP - Original Message - From: Neil McKie [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Wednesday, July 14, 2004 4:39 PM Subject: Re: [Repeater-Builder] Re: PA question Exactly ! All that effort of just 4.5 dB 73, Neil mch wrote: Less than 4.5 dB. Joe M. Neil McKie wrote: What is the real difference between 40 and 110 watts in terms of dB? Not very much. 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] Re: PA question
Cute ... translated: groan ... JOHN MACKEY wrote: One time I saw a listing for a indoor CB antenna that claimed to have better performance due to resistive technology as compared to outdoor antennas. The antenna was made of two pieces of wire that looked like a UHF TV bow-tie antenna. Each wire was connected to a 100 ohm carbon resistor which were fed in parrellel, thus creating 50 Ohms. Neil McKie [EMAIL PROTECTED] wrote: It is simply amazing what hams can be sold. Sort of reminds me of the early days of the CB world - what the CB'ers were sold ... groan ... Neil - WA6KLA Chris Peterson wrote: But we make such a big deal out of having a 7.5 DB antenna rather than a 3.5 DB antenna, and that's only 4.5 DB... :-) 73, Chris, KG0BP - Original Message - From: Neil McKie [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Wednesday, July 14, 2004 4:39 PM Subject: Re: [Repeater-Builder] Re: PA question Exactly ! All that effort of just 4.5 dB 73, Neil mch wrote: Less than 4.5 dB. Joe M. Neil McKie wrote: What is the real difference between 40 and 110 watts in terms of dB? Not very much. 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/
[Repeater-Builder] Re: PA question
It would make more sense to bypass driver stages in the amplifier, or find another amplifier. For many rb cases... 40 watts is more than enough. 110 watts out is more trouble than its work, especially an in/same band remote base. cheers, skipp www.radiowrench.com/sonic kbednar99 [EMAIL PROTECTED] wrote: I'm using a Motorla Maxtrac for a 2 meter remote base, currently running 40 watts. I have a PA from a Mastr II cont. duty base, that only needs .5 watt for 110 watt output. Anyone know of an easy way to drop the power down on the Maxtrac? These radios wont really go down below 10 watts, and get very flaky under that. I'm thinking about bypassing the final amp stage on the Maxtrac, as the 2nd stage maxes out at about 3 watts to drive the PA to 30 watts. Anyone done this before, or have any other ideas? TIA to all. Kevin K2KMB 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] Re: PA question
At 03:43 PM 7/14/2004 -, you wrote: For many rb cases... 40 watts is more than enough. 110 watts out is more trouble than its work, especially an in/same band remote base. ---This is what I was thinking too. All that for an additional 4 or 5 Db seems like a waste to me. I currently run a 2 meter remote with only 10 watts (although that's going up to 60 but only because I'm replacing my old IC-22U workhorse with a much newer radio for a remote base). 10 watts has been more than enough 99% of the time. Ken -- President and CTO - Arcom Communications Makers of state-of-the-art repeater controllers and accessories. http://www.ah6le.net/arcom/index.html AH6LE/R - IRLP Node 3000 http://www.irlp.net 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] Re: PA question
I didn't really look at the db gain with regards to the power outout. DUH! I apologize to all, I wasn't trying to start trouble. :) With the 40 watts I'm running I do cover outwards about 100+ miles with the site I'm at. Time to set up a 2 meter machine instead of a remote base. ;) Thanks to allfor their replies! Kevin K2KMB -Original Message- From: Neil McKie [mailto:[EMAIL PROTECTED] Sent: Wednesday, July 14, 2004 12:19 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Re: PA question What is the real difference between 40 and 110 watts in terms of dB? Not very much. In my opinion, the main reason some folks want the 110 watts out is for bragging rights. Neil skipp025 wrote: It would make more sense to bypass driver stages in the amplifier, or find another amplifier. For many rb cases... 40 watts is more than enough. 110 watts out is more trouble than its work, especially an in/same band remote base. cheers, skipp www.radiowrench.com/sonic kbednar99 [EMAIL PROTECTED] wrote: I'm using a Motorla Maxtrac for a 2 meter remote base, currently running 40 watts. I have a PA from a Mastr II cont. duty base, that only needs .5 watt for 110 watt output. Anyone know of an easy way to drop the power down on the Maxtrac? These radios wont really go down below 10 watts, and get very flaky under that. I'm thinking about bypassing the final amp stage on the Maxtrac, as the 2nd stage maxes out at about 3 watts to drive the PA to 30 watts. Anyone done this before, or have any other ideas? TIA to all. Kevin K2KMB 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] Re: PA question
But we make such a big deal out of having a 7.5 DB antenna rather than a 3.5 DB antenna, and that's only 4.5 DB... :-) 73, Chris, KG0BP - Original Message - From: Neil McKie [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Wednesday, July 14, 2004 4:39 PM Subject: Re: [Repeater-Builder] Re: PA question Exactly ! All that effort of just 4.5 dB 73, Neil mch wrote: Less than 4.5 dB. Joe M. Neil McKie wrote: What is the real difference between 40 and 110 watts in terms of dB? Not very much. 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] Re: PA question
Yep, got to keep in mind both the gain of the antenna and the power output -- the ERP. But, I have to agree, regardless of the antenna gain, if you drop the power level by 50%, most users will never be able to tell. Chuck WB2EDV - Original Message - From: Chris Peterson [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Wednesday, July 14, 2004 5:46 PM Subject: Re: [Repeater-Builder] Re: PA question But we make such a big deal out of having a 7.5 DB antenna rather than a 3.5 DB antenna, and that's only 4.5 DB... :-) 73, Chris, KG0BP 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/
