Ouch, the spacing between numbers disappeared :( I hope y'all can figure it out. Stretch the numbers out to form three columns under the headings.
Laryn K8TVZ --- In [email protected], "Laryn Lohman" <[EMAIL PROTECTED]> wrote: > Charles, I agree. I was thinking more of base to mobile operation. > > Just for fun, I ran some numbers in Radio Mobile with parameters from > a real system that I am familiar with on 2M. I varied antenna HAAT > and transmitter power to determine changes in coverage area and > radius. The numbers with * are the real system. I hope this table > survives the posting process and is still readable... If not I'll > post in another format. Numbers have been rounded... > > Ant. HAAT M Coverage sq mi Coverage radius mi > > 110 7431 27 > 55* 5235 23 > 27 3388 18 > 13 2350 15 > > > Tx output W Coverage sq mi Coverage radius mi > > 400 7290 27 > 100* 5235 23 > 25 3411 18 > 6.25 2115 14 > > Laryn K8TVZ > > > > --- In [email protected], "Charles Miller" <ham- > [EMAIL PROTECTED]> wrote: > > Larry, > > > > Doubling the antenna height does not always increase the gain. It > does help > > in most cases but if the antenna's are line of sight it makes > little or no > > difference. > > > > Charles Miller > > WD5EEH > > > > ----- Original Message ----- > > From: "Laryn Lohman" <[EMAIL PROTECTED]> > > To: <[email protected]> > > Sent: Saturday, August 28, 2004 2:34 PM > > Subject: [Repeater-Builder] Re: db comparisons > > > > > > > > > > > > > --- In [email protected], mch <[EMAIL PROTECTED]> wrote: > > > > > > You can gain 3dB by either doubling your power (or ERP), or by > > > > doubling the antenna height. > > > > > > Actually, doubling antenna height is usually close to 6db gain. > > > > > > Laryn K8TVZ > > > > > > > > > > > > > > > > > > > > > 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/
