[Repeater-Builder] Radio conversion to 225MHZ
Has anyone converted any of the commercial (GE/Motorola) radios to the 220 band? If so what works and what doesnt. I need several 225 radios and thought this might be a route to go. Thanks in advance Jim
Re: [Repeater-Builder] Radio conversion to 225MHZ
I did a Micor mobile once (VHF-Hi to 220) It was a lot of work and the PA won't convert, so you need to address that. Also did a GE MPI portable, Came out okay, but a rock bound 2 watt, 2 channel portable is not really worth the effort, given the cost of Icom 3ATs etc. Not sure about the newer stuff. GL de W1EL Eric Lowell Eastern Maine Electronics Inc. 48 Loon Road Wesley ME 04686 eme@starband.net www.satnetmaine.com --- On Wed, 10/14/09, J aat...@yahoo.com wrote: From: J aat...@yahoo.com Subject: [Repeater-Builder] Radio conversion to 225MHZ To: Repeater-Builder@yahoogroups.com Date: Wednesday, October 14, 2009, 7:41 PM Has anyone converted any of the commercial (GE/Motorola) radios to the 220 band? If so what works and what doesnt. I need several 225 radios and thought this might be a route to go. Thanks in advance Jim
Re: [Repeater-Builder] Radio conversion to 225MHZ
I have several Mitsubishi 220 PA Hybrid Modules. 100 mW in, 20~25 W out. $30 each. I have a friend that made some interface PCBs, not essential, but handy. I'll ask him what he wants for them if anyone is interested. Eric Lowell wrote: I did a Micor mobile once (VHF-Hi to 220) It was a lot of work and the PA won't convert, so you need to address that. Also did a GE MPI portable, Came out okay, but a rock bound 2 watt, 2 channel portable is not really worth the effort, given the cost of Icom 3ATs etc. Not sure about the newer stuff. GL de W1EL Eric Lowell Eastern Maine Electronics Inc. 48 Loon Road Wesley ME 04686 eme@starband.net www.satnetmaine.com --- On *Wed, 10/14/09, J /aat...@yahoo.com/* wrote: From: J aat...@yahoo.com Subject: [Repeater-Builder] Radio conversion to 225MHZ To: Repeater-Builder@yahoogroups.com Date: Wednesday, October 14, 2009, 7:41 PM Has anyone converted any of the commercial (GE/Motorola) radios to the 220 band? If so what works and what doesnt. I need several 225 radios and thought this might be a route to go. Thanks in advance Jim -- mailto:o...@ozindfw.net Oz POB 93167 Southlake, TX 76092 (Near DFW Airport)
Re: [Repeater-Builder] Radio conversion to 225MHZ
J wrote: Has anyone converted any of the commercial (GE/Motorola) radios to the 220 band? If so what works and what doesnt. I need several 225 radios and thought this might be a route to go. I have converted MASTR II Mobiles, both multiplier and PLL exciter, with standard receivers to 220 MHz. - they work fine, the PLL is easier. There are preferred instructions on the MASTR II conversion site: http://www.repeater-builder.com/rbtip/geindex.html#220 For the M2 with a PLL exciter, Scott sells a complete conversion kit: http://www.repeater-builder.com/products/MIIconversionkit.html The PA's won't convert, but there is an easy fix: http://www.repeater-builder.com/products/ampbd.html I have converted MICOR Mobiles and Stations to 220 MHz. - they also work fine. There are preferred instructions on the MICOR conversion site: http://www.repeater-builder.com/rbtip/micor-index.html#220 Helical Resonators modified for 220 operation are available here: http://www.repeater-builder.com/products/ The PA's won't convert, but again - never fear, the amp board is the solution: http://www.repeater-builder.com/products/ampbd.html Any of the above radios can be converted to 220 MHz and achieve book specification sensitivity on the new band. My favorite is the MICOR. Hope this helps... Kevin Custer
[Repeater-Builder] Micor Repeater Modifications
Hi Folks, I picked up a bunch of Micor repeaters today, and as I figured, they have the TLD xxx4 receiver in them. (160-174mhz). I know that to put on 2 meters, new resonators some other stuff is required, but is it necessary if I go down to 154? I'm working on this as a backup repeater for our FD. Also, DRAT, no channel elements! Did find one other interesting piece - an X9000 base station. Mighty big will certainly hold down the desk. (yep, it really is an x9000 :-)) (previous thread). Thanks, Tim
Re: [Repeater-Builder] Micor Repeater Modifications
They might tune done. If not, try brass screws. I've used this to move high splits to 2 meters. tahrens301 wrote: Hi Folks, I picked up a bunch of Micor repeaters today, and as I figured, they have the TLD xxx4 receiver in them. (160-174mhz). I know that to put on 2 meters, new resonators some other stuff is required, but is it necessary if I go down to 154? I'm working on this as a backup repeater for our FD. Also, DRAT, no channel elements! Did find one other interesting piece - an X9000 base station. Mighty big will certainly hold down the desk. (yep, it really is an x9000 :-)) (previous thread). Thanks, Tim -- mailto:o...@ozindfw.net Oz POB 93167 Southlake, TX 76092 (Near DFW Airport)
RE: [Repeater-Builder] Radio conversion to 225MHZ
Kevin, Any suggestions for a decent quality 220mhz amp for repeater duty? Micor 20-25 watts drive or pull the PA and exciter in and 50-60 watts output? Thanks -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Kevin Custer Sent: Wednesday, October 14, 2009 5:57 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Radio conversion to 225MHZ J wrote: Has anyone converted any of the commercial (GE/Motorola) radios to the 220 band? If so what works and what doesnt. I need several 225 radios and thought this might be a route to go. I have converted MASTR II Mobiles, both multiplier and PLL exciter, with standard receivers to 220 MHz. - they work fine, the PLL is easier. There are preferred instructions on the MASTR II conversion site: http://www.repeater-builder.com/rbtip/geindex.html#220 http://www.repeater-builder.com/rbtip/geindex.html#220 For the M2 with a PLL exciter, Scott sells a complete conversion kit: http://www.repeater-builder.com/products/MIIconversionkit.html http://www.repeater-builder.com/products/MIIconversionkit.html The PA's won't convert, but there is an easy fix: http://www.repeater-builder.com/products/ampbd.html http://www.repeater-builder.com/products/ampbd.html I have converted MICOR Mobiles and Stations to 220 MHz. - they also work fine. There are preferred instructions on the MICOR conversion site: http://www.repeater-builder.com/rbtip/micor-index.html#220 http://www.repeater-builder.com/rbtip/micor-index.html#220 Helical Resonators modified for 220 operation are available here: http://www.repeater-builder.com/products/ http://www.repeater-builder.com/products/ The PA's won't convert, but again - never fear, the amp board is the solution: http://www.repeater-builder.com/products/ampbd.html http://www.repeater-builder.com/products/ampbd.html Any of the above radios can be converted to 220 MHz and achieve book specification sensitivity on the new band. My favorite is the MICOR. Hope this helps... Kevin Custer
