[Repeater-Builder] Re: 2 Delta S's as a UHF repeater
--- In Repeater-Builder@yahoogroups.com, k0jxi [EMAIL PROTECTED] wrote: Just wonder if anyone has used two 450 Delta S model radios with one as the receiver and one as the transmitter for a repeater Thinking that the narrowband models might have the needed isolation for installation Thanks, Dale Hello Dale, I have a pair of VHF Delta S's that I am using as a backup repeater - actually I have been using it for about two months now while I overhaul the 'ole Micor. It works fantastic - good audio, plenty of RF - 110 watt Delta running at 60 watts. The helical front end seems to work well as there is a 1/4 kW fire department paging transmitter on an adjacent tower about 500 yrds away. I have heard that the Delta receiver is very similar to the Mastr III station rx. We have a BpBr duplexer in place and there doesn't seem to be any problem with desense with the 600 kc split. I would imagine that with the 5 mHz split on UHF it would work real well. I wired the two control head cables into one control head by connecting the BCD lines to both radios, the receive audio, speaker, COR lines into the RX radio and the mic and PTT lines into the Tx radio. There is information on one of the packet sites that tells you how to run the radio with no control head. If you do that you will need to put your channel info into ch. 16 because the Delta selects the channels by grounding various combinations of the 4 BCD lines. Ch. 16 is selected when none of the BCD lines are grounded. It works so well that the work on the Micor has become a back-burner issue. I did read somewhere that if you turn the power on the Delta too much it will go crazy and put out a bunch of spurs, so keep that in mind. If you need any details drop me a note. 73 Robert 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: 2 Delta S's as a UHF repeater
Thanks much for the info. Did you use S or SXs for two meters? 73, Dale--- In Repeater-Builder@yahoogroups.com, KC1RM [EMAIL PROTECTED] wrote: I have done this on both 2 meters and 70cm with no problems. In fact, if you set the radios up identically, you can 'flip' them if either a transmitter or receiver fails. Jim, KC1RM - Original Message - From: k0jxi [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Tuesday, May 18, 2004 3:20 PM Subject: [Repeater-Builder] 2 Delta S's as a UHF repeater Just wonder if anyone has used two 450 Delta S model radios with one as the receiver and one as the transmitter for a repeater Thinking that the narrowband models might have the needed isolation for installation Thanks, Dale 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: 2 Delta S's as a UHF repeater
You can use an S or SX for the transmitter, but the receiver definitely needs to be the S. The helicals in the S make the difference. I think the S has about 2-3 MHz of bandwidth on receive, while the SX has close to 20 MHz. I have also used GE Phoenix S UHF radios for a repeater as well. Picked up a couple of narrowband units a while ago for $10 each. As longs as I keep the power down, seems to work pretty well. Any other questions, feel free to ask. Jim - Original Message - From: k0jxi [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Wednesday, May 19, 2004 12:03 PM Subject: [Repeater-Builder] Re: 2 Delta S's as a UHF repeater Thanks much for the info. Did you use S or SXs for two meters? 73, Dale--- In Repeater-Builder@yahoogroups.com, KC1RM [EMAIL PROTECTED] wrote: I have done this on both 2 meters and 70cm with no problems. In fact, if you set the radios up identically, you can 'flip' them if either a transmitter or receiver fails. Jim, KC1RM - Original Message - From: k0jxi [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Tuesday, May 18, 2004 3:20 PM Subject: [Repeater-Builder] 2 Delta S's as a UHF repeater Just wonder if anyone has used two 450 Delta S model radios with one as the receiver and one as the transmitter for a repeater Thinking that the narrowband models might have the needed isolation for installation Thanks, Dale 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/
