hey Brett, Please do us a favor and adjust your email client so it doesn't send email in HTML.
HTML has no place in an email.. The font was so small I needed a magnifying glass to read it and I have 20/20 vision. Brett wrote: > Have you tried common earthing of the feeders? > Do the radios have good shielding between them (metal cases no plastic). > Have you looked at the site with a good specan? > Is the sound you are hearing antenna flutter? > 80 MHz Cols what brand are they? > We found over here in the west we replaced cols with 4 stack dipoles > because of flutter and bad joints internally. > I really think it is time to check with a good Spectrum Analyser. You > may be surprised what you see coming done the feeders from the other txers. > Make sure you look at the rx freqs when they are all in rx only, you may > well find that you have a sprogy rxer basically txing into you other rxers. > Cheers > Brett > > > ----- Original Message ----- > *From:* Ian Wells <mailto:[EMAIL PROTECTED]> > *To:* Repeater-Builder@yahoogroups.com > <mailto:Repeater-Builder@yahoogroups.com> > *Sent:* Thursday, March 30, 2006 6:33 AM > *Subject:* [Repeater-Builder] desnse on community sites > > Hi guys .I have a small problem that i have been trying to sort out > for a while now .I have 5 repeaters operating on one of my sites > 3 vhf low band and 2 uhf band.The frequencies are as follows > VHF > A-TX 70.300MHZ RX 72.800MHZ fitted with 4 1.5 meter by 4 inch > meter tins-most likely a notch diplexer 3db colinear ant FM828E > B-TX 70.5875MHZ RX 73.0875MHZ fitted with 4 1.5 meter by 4 inch > meter tins-most likely a notch diplexer 3db colinear ant FM828E > C-TX 70.725MHZ RX 73.225MHZ fitted with a new band pass/band > reject possibly a varinotch 3db colinear ant FM828E > UHF > D- TX 473.575 RX 478.775MHZ fitted with mobile notch > diplexer 6mc450s 6db colinear ant MAXON PM150/SM4450SC > E- TX 489.1MHZ RX 483.900MHZ fitted with 6ld450s diplexer 6db > colinear ant MAXON PM150/SM4450SC > > All coaxes are Heliax from antennas to Diplexers with N connectors > Interconnecting cables between diplexers and radios are rg223u > A and B are a 1.5 meter apart with C in the middle > All antennas are mounted aprox 50 cms or more away from C or each > other . > D and E have a 1.5 meter between them > ie- D > > A C B > > E > > I am at times having desense (ie scratch ) especially in windy > weather occuring on repeaters B and D.It doesn't seem to affect the > desense wether the transmitters are txing or not .There isnt any > problem of the repeaters affecting each other ,they all work great > just the problem of scratch coming and going .A,C and E do get > scratch on occasion but no where as bad as D and B.D and B works > great sometimes (clear with no scratch)and then reception > will slowly develope major scratch and then slowly clear up > -possibly electrostatic or wind moving the antennas ?.I have been > fixing loose bolts on the windmill tower to stop problems incase of > tower twist and this affecting service.I am wondering if there are > any futher sugestions . > Thank You, > Ian Wells, > Kerinvale Comaudio, > www.kerinvalecomaudio.com.au <http://www.kerinvalecomaudio.com.au/> > > > > FREE emoticons for your email! click Here! > <http://www.incredimail.com/index.asp?id=96627> > > > > > > > ------------------------------------------------------------------------ > YAHOO! GROUPS LINKS > > * Visit your group "Repeater-Builder > <http://groups.yahoo.com/group/Repeater-Builder>" on the web. > > * To unsubscribe from this group, send an email to: > [EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]> > > * Your use of Yahoo! Groups is subject to the Yahoo! Terms of > Service <http://docs.yahoo.com/info/terms/>. > > > ------------------------------------------------------------------------ > -- Jay Urish W5GM ARRL Life Member Denton County ARRL VEC TXFCA President N5ERS VP/Trustee DCARA President Denton County ARES AEC Monitoring 444.850 PL-88.5 146.92 PL-110.9 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/
