[DEMI] Fw: LO leak on IF ports

[PY3CRX/PY2PLL]

----- Original Message -----
From: "PY3CRX/PY2PLL" <py2pll@py.qsl.br>
To: "DEMI" <demi@kkn.net>
Sent: Wednesday, June 06, 2001 2:36 PM
Subject: LO leak on IF ports


> I don't know if this list still active but ...
>
> Assume the 2304 transverter, old version. I assembled LO board back to
back
> to the transverter board. Now I am testing a homemade noise figure meter /
> gain analyzer but the LO (90 and 180MHz) leak is too strong and block the
NF
> measuremet set.
>
> What if I completely shield the 570MHz LO? Will the 90/180MHz spurs be
> atenuated? I'm asking this because at 2.3G the +/- 90 or +/-180MHz
carriers
> are -55dBc or so (and the NF meter don't detect above 500MHz). And I'm not
> shure about the path to this 90/180MHz.
>
> Any help is apreciated;
>
> 73
> Marcus
> PY3CRX/PY2PLL
> S. B. do Campo - GG66rf
> http://py.qsl.br
> Active from "DC" to 24GHz
>
>