Topband: Passive Receive Antenna Splitter

[Pete Smith N4ZR]

Typically the CATV splitters are marked 5-1000 MHz or similar.  I've 
often wondered how much rolloff there was beyond the basic 3-4 dB down 
at topband.  I have a Clifton that I built myself, but have not been 
able to achieve the insertion loss and isolation specs - which may well 
be my fault.

73, Pete N4ZR
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On 3/13/2014 11:07 PM, Joe Subich, W4TV wrote:
>
> I use a couple of old CATV splitters for general purposes around here
> and can't measure any excess (more than 3 - 4 dB) loss from common to
> either port.
>
> If you want a known good design to build some of your own, try:
>    http://cliftonlaboratories.com/z10050a_3_db_hybrid.htm
>
> 73,
>
>    ... Joe, W4TV
>
>
> On 3/13/2014 9:13 PM, Gary K9GS wrote:
>> Can anyone point me to a design for a splitter for sharing a Beverage
>> antenna between two receivers?  This is for Field Day so these are not
>> optimized Beverages by any means.
>>
>> Just want to allow the 80/40M stations to share antennas. Nothing fancy.
>>
>> My thoughts are to just use a CATV "2-Way" splitter at the output of the
>> Beverage matching transformer and run separate feed-lines to each radio.
>> I'm pretty sure these things work down to 1 MHz but have not measured
>> them.  I can use the pre-amp in the radio (K3) to compensate for the 
>> loss.
>>
>> Thoughts?
>>
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