Hi Tim,
First of all I appreciate all your help with the Flexers, great info as I am
new and in the learning curve. Yes, that is exactly what I am using on my
Demi transverters Hp 20ghz freq counter and service monitor and soon on the
Flex but right now my 4 ports are full..I like it as it adds isolation and
clean signals and can be expanded. My suggestion was intended to make Ralph
and others aware of what is out there. I am not sure Ralph really has a
problem and should just try it and see if the Flex likes it, bet it will.
73's
Steve
K1IIG
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
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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.
