[Premium-Rx] Receive Multicoupler

[Clemens Paul]

>Input IP3  min  +42dBm typical  > +43 dBm
>Input IP2  min  +90dBm  typical > +100dBm

These are real excellent numbers,particularly the IP2
which is often underestimated in its importance.
For use in central europe this is a must.

>Noise figure of 10dB  min

As the gain is 0dB this would mean a loss in system (rx + coupler) sensitivity of 10dB
as 10dB noise are added to the received signal.
This might be a major issue with weak signals on quiet bands.
Is it really 10dB?

73
Clemens
DL4RAJ


----- Original Message ----- 
From: "Nick Vafiadis" <nick.v at commsaudit.com>
To: <premium-rx at mailman.qth.net>
Sent: Tuesday, March 24, 2009 11:29 PM
Subject: Re: [Premium-Rx] Receive Multicoupler


For  Receive Multicoupler  CA3035B 1 Input 8 Outputs

Noise figure of 10dB  min
Input IP3  min  +42dBm typical  > +43 dBm
Input IP2  min  +90dBm  typical > +100dBm
Gain 0dB ± 1.5dB

We some times have second hand  that we put on the market

Nick Vafiadis
www.commsaudit.com

On 24 Mar 2009, at 19:44, Warren Ziegler wrote:

>
>
>
> Hi Steve,
>
>       Thanks for the info, I did check out the Stridsberg units but
> the IP2 and IP3 are at least 10dBm less than the RF Tech coupler.
> I'm afraid I live in such a heavily rf polluted environment that the
> Stridsberg's won't hold up.
>
> 73 Warren K2ORS
>
>
>
> ----- Original Message ----
>> From: Stephen Cannon <sugar_bears_home at yahoo.com>
>> To: premium-rx at mailman.qth.net
>> Cc: Warren Ziegler <ny2h at yahoo.com>
>> Sent: Monday, March 23, 2009 9:08:01 PM
>> Subject: RE: [Premium-Rx] Receive Multicoupler
>>
>> Warren,
>> I use a Stridsberg Engineering Receiver Multicoupler.  They do make/
>> sell
>> Passive Multicouplers in the 100 kHz to 500 MHz range (models MC102
>> and
>> MC104). http://www.stridsberg.com/prod01.htm
>>
>> Common Specifications - PASSIVE
>> Nominal Impedance:  50 Ohms
>> Port-To-Port Isolation:  22 dB (min)
>>                         25 dB (typical)
>> Phase (input/output):  Zero degree
>> Coupler Gain/Loss:  -3.5dB (MC102/202)
>>                 :  -7dB   (MC104/204)
>> Case:  Die-cast aluminum, black powder coat
>> Mechanical:  4-3/8 x 2-3/8 x 1-1/4 Inches (L W H)
>>
>> Options: TNC connectors -
>>
>> The MCA104M HF Receiver Multicoupler I use is a 4 port Active
>> Multicoupler
>> that covers - 500 kHz to 50 MHz.  Take a look at the data sheet at
>> http://www.stridsberg.com/mca104a.htm.  Stridsberg also makes a 2
>> port and
>> an 8 port version of this same Multicoupler, another series for the
>> VHF/UHF
>> range, and another one for 800 MHz Service band Monitoring.  The
>> product I
>> received was (in my opinion) a first class piece of equipment (much
>> better
>> than the pictures).
>>
>> Additional questions on Stridsberg Engineering products can be
>> answered by
>> email to stridsberg at bellsouth.net or phone (313)861-0660
>> (Shreveport, LA).
>> I am not associated with them other than as a satisfied user of their
>> products.
>>
>>
>> Stephen AD7TD
>>
>> -----Original Message-----
>> From: premium-rx-bounces at mailman.qth.net
>> [mailto:premium-rx-bounces at mailman.qth.net] On Behalf Of Warren
>> Ziegler
>> Sent: Monday, March 23, 2009 12:21 PM
>> To: premium-rx at mailman.qth.net
>> Subject: [Premium-Rx] Receive Multicoupler
>>
>>
>> Hello the list...
>>   Anyone know of a good rf receive multicoupler for 100kHz to at
>> least
>> 30MHz?
>> High IP2 and IP3 is important since I live near several 50kW MW BC
>> stations.
>>
>> Thanks & 73
>> Warren K2ORS (formerly NY2H)
>>
>>
>>
>> ______________________________________________________________
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>> Home Page:  http://www.premium-rx.org/
>
>
>
>
> ______________________________________________________________
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> Help Contact eMail:  paul at 8zo.com
> Home Page:  http://www.premium-rx.org/

______________________________________________________________
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Home Page:  http://www.premium-rx.org/


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