Hi Jan and Graham
If the biggest problem in a Cubesat is making the short bends as possible it seems that the RG-178 B/U is preferable because it is PTFE rated at -55 to +200 °C and only 0.072" in diameter and its minimum bending radius is 9 mm against 15 mm for the type RG-188 A/U
The RG-178 B/U can be used with IPEX MHF connector, MMCX Connector, MCX Connector, SSMB Connector and SMA Connector or directly soldered in place if possible.
I have a few meters of RG-178 B/U and if necessary I can send to you a piece of it into an envelope for test and experimentation.
See the RG-178 B/U specifications in the following page.
http://www.shbing.com/rg178-e.htm
73" de
i8CVS Domenico
----- Original Message ----- From: "Jan King" [email protected] To: "Graham Shirville" [email protected] Cc: "AMSAT BB" [email protected]; "CubeSat @ CubeSat.org" [email protected] Sent: Friday, April 22, 2011 2:22 AM Subject: [amsat-bb] Re: [CubeSat] advice request for FUNcube
Graham, My vote would be RG-188A/U. See my AMSAT-IARU Link Model Rev 2.4.3; Line Loss Tools and Tables Tab; First entry. Use the calculator there to get losses at various frequencies. It's PTFE wrapped and there are SMA and
SMC
connectors made for it. Or you can solder it directly to the transmitter output, if you are careful. It's pretty flexible and can have about the shortest bend radius of any coax available. In the end, however, that
might
be your biggest problem in a Cubesat - making the short bends. Jan
On Wed, Apr 20, 2011 at 9:41 PM, Graham Shirville < [email protected]> wrote:
hi All,
A simple question this time!
What is the best coax cable to use in a cubesat? Size, flexibility/min radius, existing space heritage, ease of applying connectors are our
main
design drivers - we are only using UHF and VHF so losses are not going
to be
too much of a problem hopefully..
many thanks in advance
73
Graham G3VZV
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