The KL203 senses the RF and less than 1w average power is needed. That is why it works as is with a softrock in AM FM and likely in CW. In SSB the average power is far less as in most transceivers unless a mic compressor is used. A simple mod I believe is simply to increase a little bit the picking of RF at the RX input of the KL203. The KL203 uses a 500V 8.2pf at C1. I would add another 8.2pf in parallel at C1. If you use the KL203 with 1w you may use also a non 500V cap, any will work.
Il 12/set/2019 20:14, "Sajid Rahum via Groups.Io" <zs735=
[email protected]> ha scritto:
Hi Allison, i did get the prebuilt band pass filter from ebay.? Wondering if you have any suggestions to mod the KL-203 as well as how to mod it to be more sensistive to lower power e.g. from softrock <1w; I am able to trigger AM but not via SSB.
