Am 29.06.2012 23:54, schrieb Stefan Schäfer: MF, It becomes better! I just realised that this filter is perfect to protect a receiver like the IC706 when using a BIG antenna as the MF receive antenna
Yes an exciting game of 'Techno-Guess' HiHi What is the stated pass band ripple ? Is that plot 3 dB / 50% or 6 dB ? Should there be a standing mA feed ? which may dampen the device a bit , stop it wr
Hi Alan, Mike, Claudio, Thanks for the help! Am 30.06.2012 00:08, schrieb Alan Melia: Stefan if they are really that old then they mar be deterioration of the elements. Seems not to apply for the one
Hi Stefan, That's the reason why I opted for for the yahoo list... But back on topic.:-) If I understand you correctly you did not terminate the filter output side while measuring with the hi Z probe
Hi Tom. Thanks. Yes, i have the 2 V rms in mind. It was stated in the datasheet. I intend to use a series configuration of 3 antiparallel 1N4148 diodes on the input to protect the filter. At 50 Ohm,
MF, It becomes better! I just realised that this filter is perfect to protect a receiver like the IC706 when using a BIG antenna as the MF receive antenna. It will be easy to build a passive circuit
Stefan if they are really that old then they mar be deterioration of the elements. I remember the Kokusai fikters used in KW TX and RX designs (much bigger profile) degraded over the years. I have a
Stefan Have you included the 300pF capacitor (I do not read German) and not sure if it is the same on both ends? I would expect the launch circuit needs a cap both ends. Mike G3JVL --Original Message
Hi Stefan The source or load impedances are wrong. Try the test with a pot in series on one end first and see what value resistance reduces the ripple. Best if a spec can be found then design circuit
