Bob - Glad you received the splitters OK and hope you had a nice Easter with your family. I have never had one of these apart, so, cannot comment at this time. Some time ago I did take an HP splitter apart, but, only after it died. Turned out to be the 3.2 volt regulator. I just bypassed it with a piece of wire and it has been working for years. Since the GPS receiver driving it is 5 volts, the amplifier inside did not mind the difference between 3.2 or 5 volts. These are all supposed to be smart splitters, as you well know, so, I wonder how simple resistive divider on the output of the amplifier alone would work. Regardless, sure sounds like it would be easy to make a line amp from one. Just make sure the DC gets from the port you are going to use to the amp, and will also provide adequate load to the receiver to let it think it is connected to an antenna and not give a fault. Good luck with trying to find a schematic. Probably easier to reverse engineer it. Regards - Mike
Mike B. Feher, N4FS 89 Arnold Blvd. Howell, NJ, 07731 732-886-5960 -----Original Message----- From: Bob Camp [mailto:li...@rtty.us] Sent: Sunday, April 04, 2010 7:42 PM To: Mike Feher Subject: Re: [time-nuts] Symmetricom 58535A GPS antenna splitters FS Hi The gizmos came in while we were off to visit the kid in Maryland. They look great - THANKS!!! As far as I can see looking at them, each channel terminates in about an 8 db pad. I don't have a microscope handy so the resistor markings are a bit hard to read. If I'm right about the pad, simply pulling it out should turn them into line amps. Off to look for a schematic .... Thanks again! Bob On Mar 29, 2010, at 7:47 AM, Mike Feher wrote: > Thanks Bob - I am going to try and get them all in the mail today. Regards - > Mike > > Mike B. Feher, N4FS > 89 Arnold Blvd. > Howell, NJ, 07731 > 732-886-5960 > > > > > -----Original Message----- > From: Bob Camp [mailto:li...@rtty.us] > Sent: Monday, March 29, 2010 7:39 AM > To: Mike Feher > Subject: Re: [time-nuts] Symmetricom 58535A GPS antenna splitters FS > > Hi > > Paypal just went out. > > Bob > > On Mar 29, 2010, at 7:24 AM, Mike Feher wrote: > >> Bob - >> >> Yes, modifying a two port may be the easiest way to go. If you can get a 4 >> port, you will probably realize more gain. I also have a bunch of 4 ports, >> but not nearly as many as the two ports. Please let me know how you intend >> to pay for these. If by check, just let me know when you mail it, as I am >> not going to wait till it clears. I sold a total of 14 of these, and it >> would be convenient if I could mail them all at once. One guy is paying > buy >> check, the rest have already paid by PayPal. I did send you an invoice. > So, >> just waiting to hear from you :). Thanks - Mike >> >> Mike B. Feher, N4FS >> 89 Arnold Blvd. >> Howell, NJ, 07731 >> 732-886-5960 >> >> >> >> >> >> -----Original Message----- >> From: Bob Camp [mailto:li...@rtty.us] >> Sent: Saturday, March 27, 2010 9:02 AM >> To: Mike Feher >> Subject: Re: [time-nuts] Symmetricom 58535A GPS antenna splitters FS >> >> Hi >> >> Line amps appear to be unobtanium. I'm wondering if it would be better to >> mod some two ports as line amps ... >> >> Ok, my details are: >> >> Bob Camp >> 20 Roaring Creek Court >> Carlisle PA 17013 >> >> Paypal ok for payment or do you prefer another way? >> >> Thanks! >> >> Bob >> >> >> On Mar 26, 2010, at 11:35 PM, Mike Feher wrote: >> >>> Bob - >>> >>> Thanks for the purchase. I will send you an email sometime tomorrow >> letting >>> you know the exact postage and all for 2 of them. Sorry, no line amps. >>> Regards - mike >>> >>> >>> -----Original Message----- >>> From: Bob Camp [mailto:li...@rtty.us] >>> Sent: Friday, March 26, 2010 9:31 PM >>> To: Mike Feher >>> Subject: Re: [time-nuts] Symmetricom 58535A GPS antenna splitters FS >>> >>> Hi >>> >>> Sounds like a good price. >>> >>> I'll take a pair if you still have them. >>> >>> Have any of the line amps by any chance? >>> >>> Thanks! >>> >>> Bob >>> >>> >>> On Mar 26, 2010, at 7:29 PM, Mike Feher wrote: >>> >>>> I have the same items available in original sealed bags, for $35 each > for >>>> one, $65 for two, and $120 for 4, plus actual priority shipping. So for >>> one >>>> that is about $6, and for 2 or 4 it is about $11. Sorry to advertise on >>>> here, but, I know I am not setting a precedent. PayPal or checks > welcome. >>> I >>>> am now in Atlanta, but will be home tomorrow. Regards - Mike >>>> >>>> >>>> Mike B. Feher, N4FS >>>> 89 Arnold Blvd. >>>> Howell, NJ, 07731 >>>> 732-886-5960 >>>> >>>> >>>> >>>> -----Original Message----- >>>> From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On >>>> Behalf Of J. L. Trantham, M. D. >>>> Sent: Friday, March 26, 2010 6:55 PM >>>> To: Discussion of precise time and frequency measurement >>>> Subject: Re: [time-nuts] GPS antenna splitters >>>> >>>> I have used one of these (ePay item 370265750113) and it works well. >>>> >>>> Joe >>>> >>>> >>>> >>>> _______________________________________________ >>>> time-nuts mailing list -- time-nuts@febo.com >>>> To unsubscribe, go to >>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>>> and follow the instructions there. >>>> >>> >> > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.