Looking for more information on the "Control Head". I have several CXB's without PA's. I will be using a Micor PA with external circulator. Looking for information on the feed back comming from a MSF PA to the exciter. Ralph ----- Original Message ----- From: "wb6dgn" <wb6...@att.net> To: Repeater-Builder@yahoogroups.com Sent: Tuesday, July 6, 2010 7:55:02 PM Subject: [Repeater-Builder] Re: MSF-5000 information needed
The TPN1186 power supply provides a high current (approx. 36A.), 13.8 volt source and two lower current 13.8 volt sources, fused at 6.3 amps each. There is also decoupling and filtering on a "distribution board" which also provides overvoltage and overcurrent protection. Depending on your "12 volt" source, you may want to find a "parts donor" power supply and adapt that distribution board to suit your needs. The lower power (150 watt and below) stations do not use any supply voltage above that 13.8 volts, however. One thing that you will need, however is what Motorola calls the "Low Power Control Head". This is a rather deceptive name for a rather simple device that senses forward and reflected power and sends that information to the power control circuitry in the RF tray. This information is normally located on one of the RF amps. (I forgot which) but when the PA's are not used, the "control head" performs that function. Schematics of the power supplies and the "control head" should be on Repeater Builder TIP pages or they can be found in most of the MSF service manuals. Good luck, Tom DGN --- In Repeater-Builder@yahoogroups.com , "Robert Pease" <r...@...> wrote: > > I was given an MSF-5000 for VHF, without the power supply or the PA, > just the rf deck and the control deck. > > > > I want to use it for a small on site repeater for linking in an EmCom > vehicle. My understanding is that it will put out about 5 watts without > the PA. Are there any problems with using it this way and what do I need > for DC power, I would love to run it directly off the 12V battery bank > that runs the other equipment. > > > > I haven't even started looking at it, it is in the garage waiting the > time, but with the time approaching I thought I would send our a request > and get some info before I jumped on it. > > > > Thanks - KS4EC - Rob > > > > Robert Pease > > P No trees were killed in the sending of this message. However a large > number of electrons were terribly inconvenienced. > > Think before you print! > > > > > > Since 1974, the award-winning Alpert JFCS has helped families of all faiths > throughout most of Palm Beach County, FL, via counseling, seniors services, > residences for the disabled, mentoring children, support groups and a lot > more. > > SOLUTIONS FOR LIVING > www.JFCSonline.com > > Please take note of our new website and E-Mail Addresses. Please update your > contacts ASAP. > > > > . > > > ---------------------------------------------------------- > > > NOTICE: > > This e-mail message and all attachments transmitted with it are intended > solely for the use of the addressee and may contain legally privileged and > confidential information. If the reader of this message is not the intended > recipient, or an employee or agent responsible for delivering this message to > the intended recipient, you are hereby notified that any dissemination, > distribution, copying, or other use of this message or its attachments is > strictly prohibited. If you have received this message in error, please > notify the sender immediately by replying to this message and please delete > it from your computer. >
