[Repeater-Builder] Re: 2 Meter Repeater Duplexer . . .
Hi Larry and all, There is a problem. Can you try again please and this time send your email at my gmail account. (k6irf73) @ (gmail.com) 73! tnx guys! Lot / k6irf --- In Repeater-Builder@yahoogroups.com, larryjspamme...@... lar...@... wrote: Hi Lot - no emails received from you at any of my email addresses, home or work. Also, you seem to be having a problem receiving them, even from different sources. I don't know what to tell you... Larry -Original Message- From: Lot Sent: Apr 7, 2010 10:25 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: 2 Meter Repeater Duplexer . . . Hi! Thanks to all who provided information on the duplexer. Larry, I sent you an email but not sure if it went through. We are interested to know about the duplexer. Please send me an email when you get the chance. (k6...@...) Thanks! Lot / k6irf
Re: [Repeater-Builder] Re: 2 Meter Repeater Duplexer . . .
Hi Lot - no emails received from you at any of my email addresses, home or work. Also, you seem to be having a problem receiving them, even from different sources. I don't know what to tell you... Larry -Original Message- From: Lot Sent: Apr 7, 2010 10:25 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: 2 Meter Repeater Duplexer . . . Hi! Thanks to all who provided information on the duplexer. Larry, I sent you an email but not sure if it went through. We are interested to know about the duplexer. Please send me an email when you get the chance. (k6...@yahoo.com) Thanks! Lot / k6irf
[Repeater-Builder] Re: 2 Meter Repeater Duplexer . . .
Hi! Thanks to all who provided information on the duplexer. Larry, I sent you an email but not sure if it went through. We are interested to know about the duplexer. Please send me an email when you get the chance. (k6...@yahoo.com) Thanks! Lot / k6irf
[Repeater-Builder] Re: 2 Meter Repeater Duplexer . . .
Lot, The specification sheet for this duplexer shows 70 db of isolation. That may not quite be enough. I have a Q2330E which Sinclair claims 85 db of isolation. I was able to carefully tune the duplexer to obtain 91 db of isolation at 147.280/147.880. With a 75 Watt Micor repeater station and factory Motorola preamp I have no measurable desense. When I tried a ARR preamp I had 2.5 - 3 db of densense, so went to the factory Micor preamp which has a little less gain. I much prefer to sacrifice a little sensitivity to eliminate densense. I am not all that familiar with what your VXR repeater needs for isolation but I think 70 db is going to be a problem even if you run pretty low power. You could also add some additional cavities between the transmitter and receiver ports to the duplexer to increase your overall isolation. Good Luck, Joe - WA7JAW --- In Repeater-Builder@yahoogroups.com, Lot k6...@... wrote: Hi Everyone, We are setting up a project in Manila and would like to ask some help with information about a good repeater duplexer. I saw one in Ebay, (Sinclair Q2220E VHF BpBr Repeater Duplexer). Is this a good type of duplexer and would work on a typical repeater setup? We will use it on a VXR7000. The Repeater Frequency will be at 144.880 - 0.600. Any information will be very much appreciated. Thanks! Lot / k6irf
[Repeater-Builder] Re: 2 Meter Repeater Duplexer . . .
Larry, Your message came through blank. Might want to try again. Your 6 can Wacom or one of those other ones you just picked up would work much better for him if you still have one available. Joe
