Be careful about getting the proper replacement part. The basic M57729, without a suffix letter, is for 430-450 MHz. The M57729L is for 400-420 MHz, and the M57729H is for 450-470 MHz. There are other versions, with different suffixes, for other UHF bands.
73, Eric Lemmon WB6FLY -----Original Message----- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of David Struebel Sent: Sunday, May 23, 2010 12:01 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Need source for UHF power module RF Parts in California lists the M57729 for $ 68 (US) http://www.rfparts.com/module_m.html#m57704el <http://www.rfparts.com/module_m.html#m57704el> Dave WB2FTX ----- Original Message ----- From: P Grant <mailto:ei4hxperimen...@eircom.net> To: Repeater-Builder@yahoogroups.com <mailto:Repeater-Builder@yahoogroups.com> Sent: Sunday, May 23, 2010 9:37 AM Subject: Re: [Repeater-Builder] Need source for UHF power module Hello Byron, The M57729 is a standard Motorola PA Slab. Yours is the Kenwood Part number, M57729h-01-P. The standard Motorola module will be available off the shelf,,, BUT,,, it will be priced @ $230.oo US. Any equivalent Motorola, or spurious part [30W UHF] will do the job, much cheaper,,, you can cross reference on any good RF Components web site in your area. You may source one from a scrap [ out of spec ] mobile PMR radio for $10.oo, if you know where to look ! 25 watt would be much cheaper and easier to find. Hope this is of some help. 73 from Ireland. Peter EI4HX ei4hxperimen...@eircom.net <mailto:ei4hxperimen...@eircom.net> ----- Original Message ----- From: x.tait.tech get real <mailto:x.tait.t...@gmail.com> To: Repeater-Builder@yahoogroups.com <mailto:Repeater-Builder@yahoogroups.com> Sent: Saturday, May 22, 2010 10:34 PM Subject: Re: [Repeater-Builder] Need source for UHF power module there is a company here in New Zealand that used to or maybe still does deal with Kenwood products http://www.pacificaerials.co.nz/ <http://www.pacificaerials.co.nz/> I know of no one else, other than Kenwood themselves Marcus On Sat, May 22, 2010 at 5:02 PM, byronhham <hellewe...@utahwisp.com <mailto:hellewe...@utahwisp.com> > wrote: Hi Does anyone know of a good source for a M57729h-01-p. It is the UHF power module in the Kenwood TKR-820. It is rated at 30 Watts 12 volts 440 to 470 MHz. I found that they do not like to be operated into the wrong side of a duplexer. For even a short time. Is it used in any other transceivers that might be purchased for the module? Thanks Byron NJ7J ________________________________ No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.819 / Virus Database: 271.1.1/2891 - Release Date: 05/23/10 02:26:00
