[R-390] CU-872A/U RX multicoupler

[Bob Camp]

Hi

Not to rain on anybodies parade here, but ….

If you drill down into the cool stuff on the navy-radio.com site, there is a pretty good bunch of data on using these gizmos. The simple answer is - don’t unless you *really* need to. In most cases you are much better off with a simple transformer based passive splitter. Putting broad band gain in front of a nice selective R-390(A) front end does not help things out. Your cascade IMD goes up quite fast. There really is no way around it, no matter how much money you spend. 

Bob

On Jul 17, 2014, at 8:33 PM, Nick England <navy.radio at gmail.com> wrote:

> I have posted a block diagram and circuit description here -
> http://www.navy-radio.com/rcvrs/coupler/cu872.htm
> 
> Nick K4NYW
> www.navy-radio.com
> 
> 
> On Thu, Jul 17, 2014 at 6:51 PM, Phil Mills <pmills7 at comcast.net> wrote:
> 
>> Roger,
>> 
>> That was a very interesting rundown on the use of the
>> multicouplers.
>> 
>> 
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