Steve, Are you using the DEM 10-4 splitter? If so, that has a max input of +10 dBm and an output that is +/- 2 dBm of the input. I believe Ralph is looking for an attenuator / splitter that does not provide amplified unity gain signals across the filtered outputs.
I am using the 4-10 connected to a Rb clock to drive the FLEX-1500 & FLEX-500o with two ports to spare. It is a great little splitter. http://www.downeastmicrowave.com/PDF/10-4pd.pdf -Tim -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Steve Tripp (K1IIG) Sent: Wednesday, October 20, 2010 11:43 AM To: [email protected]; [email protected] Subject: Re: [FlexEdge] Trimble ThunderBolt with F5K I would think a simple TV splitter should work well and of course the more outputs the more loss. I am using a Z3801 GPS reference into an active 4:1 splitter by http://www.downeastmicrowave.com/ and it works well. I lock my transverters and service monitors and will lock the 5000 when I get the v/u transverters. At this time I am not sure what the output is but believe it is 8-10dbm, time to measure it. Steve K1IIG >> It appears that the 10mHz output from the Trimble (+12.5dBm) is a >> little hot for the Flex, which wants to see *<*+10dBm. >> I've been told that the simplest, cheapest way to tame the Trimble is >> to insert a splitter in the output, put a 75 ohm terminator on one >> side and connect the other side to the Flex. > > > The Flex wants 0 to +10 max on the reference port, per the manual. > Using a two way splitter between the Thunderbolt and the F5K drops the > level about > 3 > dB, which is still close to the upper limit for the F5K. > > A better "losser" is a three or four way splitter. These will lose > more power than the two way splitter. Using the terminators on the > unused ports of the splitter is optional if there is nothing connected > to the unused ports. If you were using the splitters to feed long > lengths of coax cable from the splitter ports. than you would need to > terminate the far end of the cables to prevent reflections which could > change the splitter's loss, or, in the case of NTSC TV signals, cause > severe ghosting in the picture. > > Or you could use an in-line 6 or 10 dB coax attenuator. > > 73, > > Ralph W5JGV - WD2XSH/7 > > > _______________________________________________ > Flexedge mailing list > [email protected] > http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz > This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is > used for posting topics related to SDR software development and > experimentalist who are using beta versions of the software. _______________________________________________ Flexedge mailing list [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is used for posting topics related to SDR software development and experimentalist who are using beta versions of the software. _______________________________________________ Flexedge mailing list [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is used for posting topics related to SDR software development and experimentalist who are using beta versions of the software.
