[K3PZN-List] UHF Repeater (Andy Leeds)

[wo3l at comcast.net]

According to the responses I've gotten on the repeater-builder list the regulator circuit uses a stock transistor so hopefully I'll get off work early tomorrow, make a trip up to the site in the afternoon and at least verify that part is bad. There is also a hidden fuse under / behind that board so I need to check that as well. 



If none of those options pan out we could put a 9.6V regulator in the SCCB (control board) housing, remove the fuse I mentioned and then the 9.6V would feed from the SCCB to the interconnect board which would in turn send it back out to the IPA and VCOs. 





Andy 



----- Original Message -----


From: "Philip Karras" <ke3fl at yahoo.com> 
To: k3pzn-list at mailman.qth.net 
Sent: Thursday, August 11, 2011 6:00:41 AM 
Subject: Re: [K3PZN-List] UHF Repeater (Andy Leeds) 

Andy, 

How much current does this 9V regulator need to produce? I have plenty of 7809's since I was modifying every 9V radio I had to work off of 12+V at one time but I probably only have 7809's up to 1.5Amp. 

Other than that I know I have 5Amp variable voltage regulators, similar to a 1.5A LM 317, which I could build up into a 9V 5A supply for you. 

73 de ke3fl 
Phil 

> Date: Tue, 09 Aug 2011 21:13:57 -0400 
> From: Andy Leeds <wo3l at comcast.net> 
> Subject: [K3PZN-List] UHF Repeater 
> To: Carroll County Amateur Radio Club <k3pzn-list at mailman.qth.net> 
> Message-ID: <4E41DB55.6080207 at comcast.net> 
> Content-Type: text/plain; charset=ISO-8859-1; 
> format=flowed 
> 
> 
> I mentioned at the meeting yesterday the UHF machine cut 
> out for unknown 
> reasons about 5:15PM. After the meeting I went up to the 
> site and 
> checked for obvious blown fuses etc but didn't find 
> anything simple. I 
> went back again tonight after work and dug a little deeper. 
> It looks 
> like the 9V regulator isn't making 9V anymore. The good 
> news is the a 9V 
> regulator isn't that bad to get, the bad news is the part 
> is in the 
> bottom of the chassis in the most difficult location 
> possible. 
> 
> I'll see if I can dig up a replacement by Saturday. 
> 
> Andy 

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