Re: [Repeater-Builder] uniden aru 251k
Gary, The Uniden ARU-251K is a 450-470 MHz CRYSTAL based repeater/base station with a very limited internal controller. If it can be dropped into the 440 ham band you will then need an external controller. The standard duplexer with the unit is a simple notch type which may be suitable for operation on an isolated site but will be nothing but problems on a crowded one. The first thing to do is to check the repeater on the frequency that it is currently set up for and determine if it is working properly. After that with a service manual and the proper test equipment and a new set of crystals you may be able to move it into the ham bands. Milt N3LTQ - Original Message - From: ke5...@yahoo.com To: Repeater-Builder@yahoogroups.com Sent: Tuesday, May 18, 2010 8:24 PM Subject: [Repeater-Builder] uniden aru 251k I have this repeater and I need the modification for 440 amateur use. Any help on this will be appreciated. Thanks in advance. Gary Sent from my Verizon Wireless BlackBerry -- From: MCH m...@nb.net Date: Tue, 18 May 2010 20:17:14 -0400 To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Sinclair dipole phasing harness I can't speak specifically of Sinclair, most all of the models I've used will do either omni or cardioid by moving the elements. The spacing from the mast stays the same. Joe M. Nate Duehr wrote: On 5/18/2010 12:29 PM, Larry Horlick wrote: I suspect that the harness does not affect the pattern, but rather it is the dipole to mast spacing. Yes, I believe this is correct. Whenever I've looked, notice that the omni versions are 1/2 wave spacing from the mast, and the cartioid are 1/4 wave spacing from the mast, in almost all of Sinclair's product line. Nate WY0X
Re: [Repeater-Builder] uniden aru 251k
I wasn't sure of the model number until Milt confirmed it. That repeater does go down into the ham band very nicely, once you plug in crystals. Re-rock it, and it tunes right down. I did one a number of years ago to 443.0-ish with no problem, and it's been running ever since. Not a bad little box for what it is. Like Milt said, check it out where it is now THOROUGHLY, then you can order rocks and tune it down. On 5/19/2010 11:25 AM, Milt wrote: Gary, The Uniden ARU-251K is a 450-470 MHz CRYSTAL based repeater/base station with a very limited internal controller. If it can be dropped into the 440 ham band you will then need an external controller. The standard duplexer with the unit is a simple notch type which may be suitable for operation on an isolated site but will be nothing but problems on a crowded one. The first thing to do is to check the repeater on the frequency that it is currently set up for and determine if it is working properly. After that with a service manual and the proper test equipment and a new set of crystals you may be able to move it into the ham bands. Milt N3LTQ - Original Message - From: ke5...@yahoo.com To: Repeater-Builder@yahoogroups.com Sent: Tuesday, May 18, 2010 8:24 PM Subject: [Repeater-Builder] uniden aru 251k I have this repeater and I need the modification for 440 amateur use. Any help on this will be appreciated. Thanks in advance. Gary Sent from my Verizon Wireless BlackBerry Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * Your email settings: Individual Email | Traditional * To change settings online go to: http://groups.yahoo.com/group/Repeater-Builder/join (Yahoo! ID required) * To change settings via email: repeater-builder-dig...@yahoogroups.com repeater-builder-fullfeatu...@yahoogroups.com * To unsubscribe from this group, send an email to: repeater-builder-unsubscr...@yahoogroups.com * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
