LF: WG - selective level meter SPM-3

["Alberto Riomao" <ariomao@hotmail.com>]

Hello all,


I bought a very old and used Wandel & Goltermann - selective level meter 
SPM-3 (selektiver pegelmesser 2~612KHz), but I think the filter is too 
narrow, because I tune it in some airport beacons and I can not listen the 
CW, only a  high frequency noise.
Does anyone know any modifications for this equipment? (I only found filter 
mods to other brands...)



Thank you,
Alberto Riomao - PY2ZL

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