Tag Archives: Rich (KQ9L)

Rich builds a simple GX12 key/paddle adapter for the Discovery TX-500

Many thanks to Rich (KQ9L) who shares the following tutorial describing how to build a compact key/paddle GX12 connector for the lab599 Discovery TX-500:

This adapter is simple, compact, and eliminated the need for yet another wire extension.

How to build a Discovery TX-500 key adapter

I love my Lab599 Discovery TX-500 however I was frustrated with all the extra “wires” hanging from the connectors on the rig.

I took inspiration from Vlad Solovey (RA9QAT) who posted his design for a small and compact 3.5mm jack that allows you to connect your paddles directly into a GX12 connector. Continue reading Rich builds a simple GX12 key/paddle adapter for the Discovery TX-500

Xiegu X6100: Two effective ways of mitigating broadcast band interference and overloading

As I’ve previously mentioned, the Xiegu X6100–at least at time of posting (January 17, 2022)–has overloading issues. If you listened to the activation video I posted yesterday, you can hear a local AM broadcaster punching through the 40 meter band, especially noticeable before/after operating SSB.

Several subscribers asked if I tried using the attenuator and RF gain to mitigate the level of overloading.  Attenuators and RF gain can be an effective means of mitigating noise levels, but they essentially affect everything on the band–all signals somewhat equally.

A better approach is to use a BCI Filter.

BCI Filters

BCI filters reduce or notch out AM broadcast band signals so that they don’t overload your receiver.

BCI Filters are placed between the radio and the antenna. They can have a dramatically positive effect if you live near a broadcast station and/or if you have a radio that’s prone to overloading.

I see them as a more “surgical” approach to solving broadcast band interference.

BCI filters are simple, inexpensive, and effective. Here are two options shared by QRPer readers: Continue reading Xiegu X6100: Two effective ways of mitigating broadcast band interference and overloading