RTL SDR HF Helper improves reception
ฝัง
- เผยแพร่เมื่อ 6 ต.ค. 2024
- Using an RTL-SDR.COM dongle (genuine model V4) and a computer with SDR Sharp you can get quite good reception of HF signals. However reception can sometimes be spoiled by overload from signals on or away from the desired reception frequency. The 'HF Helper' presented here can reduce these problems. And you can use it in conjunction with a QRP transmitter to form a simple transmitting station.
Tom the Diletantte video on using the software: • Software Defined Radio...
Genuine RTL-SDR v4: ebay.us/wjDHmC
OTG cable (USB to Type C): ebay.us/cSdHLN
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👍Thanks for sharing Peter. A simple circuit that makes an amazing difference. Suspect this would be good on many AM/HF receivers.
This is a great invention. Somewhere in the Video I lost trace of what’s with what or without what. But overall: very impressive. I‘m gonna build me one.
At last, a hardware-optimized software-defined radio.
Very nice, Peter. Thanks for sharing!
Very nice. I have no strong MW stations here in Norway, but this will help me also.
What I want to make is a SAW filter selector for the VHF and UHF bands. I got strong Tetra, DAB, 450MHz 4G, signals here. The tetra is ridiculous strong! The filter SMD chips themselves are cheap and have various ranges.
G'day Peter, fantastic!! I'd love that on my new Tecsun s-2200x.. 73's
clever idea Peter 73
All you need to do now is miniaturize this, patenr the dsign, get the Chinese mass producing it for you and watch the dollars roll in! :)
Very good idea. Unfortunally this variable capacitor is very Hard to obtain. I can use a modern one? 73 from PU2PQQ
I’m sure you could use a modern polyvaricon.
Go to the junk yard and find any old radio, it will most likely have all the components you need.
Yes, but the performance won't be as good, and it will have a narrow tuning range.
Circuit in Peter's video used a 10-300pF variable capacitor. You may be able to get a new polyvaricon variable capacitor such as a 280+280+20+20pF. This should give you a range of 0-300pF with 280+20pF in parallel. You could even connect all x4 in parallel for 0-600pF range. For receive only or QRP (5W or less) on transmit, polyvaricons work just fine.
👍
Can you share that frequency list for SDRSharp? I have come up empty handed searching for it.
The frequency list is something you store as a memory. Every location will have a different set of useful frequencies. So you just have to tune around and save what's interesting.
Why did you skip the station in french?
🤣🤣🤣