UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Mini-Mod 2021!

Ian - G4JQT · 4th Sep 2021, 11:57 am

The MiniMods are designed to have a range of only a two to three metres. This keeps them legal for those who are nervous of being accused of operating an illegal transmitter. But of course the range depends upon local noise, channel occupancy (you'd choose a clear one anyway) and receiver sensitivity. Extending the MiniMod radiating aerials works to some extent, but if too long it will detune the output tuned circuit unless you change the fixed capacitor.

I don't think they will be suitable for your application. Nevertheless, having two low-power around-the-house MW transmitters on different frequencies shouldn't present any problems. I've built various transmitters to serve more than just my house and had them all operating without any problems. Just ensure that they are more than three or four channels (at least 27kHz) apart.

4th Sep 2021, 11:57 am	#87
Ian - G4JQT Octode Join Date: Jun 2004 Location: Reading/Fakenham, UK. Posts: 1,323	Re: Mini-Mod 2021! The MiniMods are designed to have a range of only a two to three metres. This keeps them legal for those who are nervous of being accused of operating an illegal transmitter. But of course the range depends upon local noise, channel occupancy (you'd choose a clear one anyway) and receiver sensitivity. Extending the MiniMod radiating aerials works to some extent, but if too long it will detune the output tuned circuit unless you change the fixed capacitor. I don't think they will be suitable for your application. Nevertheless, having two low-power around-the-house MW transmitters on different frequencies shouldn't present any problems. I've built various transmitters to serve more than just my house and had them all operating without any problems. Just ensure that they are more than three or four channels (at least 27kHz) apart.