[amsat-bb] Mirage KP-2 for 2m?

w4upd updwrb at bristor-assoc.com
Mon Jun 8 19:38:45 UTC 2015

I have both the mast mounted and in-shack 2 meter and 70cm versions. 
Normally they work well, but one word of caution, if you use them for 
full duplex satellites, best to get the older versions that are in an 
aluminum cast box. This reduces cross talk when transmitting on 70cm. 
The new versions are not shielded, at least the one I had and got rid of 
it. The new ones were in a plastic box, no shielding, and a simple 
stainless steel angle bracket for mounting. All the ones I presently 
have are the aluminum boxes. You might want to call MFJ and confirm the 
present day construction. Otherwise, I found them to work well and will 
operate with voltage sent up over the coax. Also, they can handle 160 watts.

Also, the newer external voltage box to supply the preamp are kind of 
hokey as well. They use to use a very nice square aluminum box, then 
went to a plastic box that suppose to sit on your table. However, the 
RG-8 or whatever coax makes this not very practical.

If not used for satellite full duplex or in simple single band 
operation, the units should work okay.

Reid, W4UPD

On 6/8/2015 3:24 PM, Steve Kristoff wrote:
> I believe I am digging up a recent thread, but I just decided that I need a
> pre-amp.
> Anyone have experience with the Mirage mast-mount preamps? What do folks
> recommend? I will want one that is for 2 m and has an RF-sensed
>   pass-through. Most likely to be putting about 25 watts through it for now.
> Thanks!!
> Steve AI9IN
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