BBC makes 1920s Radio Times magazines available

The BBC has made the earliest issues of the complete Radio Times magazines 1923-1929 publicly available online for the first time

This release is part of the BBC Genome Project - a digitised searchable database of programme listings - from 1923 to the end of 2009.

More at :

http://www.southgatearc.org/news/2017/march/bbc-makes-1920s-radio-times-magazines-available.htm#.WN5gfcCGPIU

Airspy unveils Airspy HF+ specs

Airspy has unveiled details of upcoming Airspy HF+ at : http://airspy.com/airspy-hf-plus/

Technical specifications

HF coverage between DC .. 31 MHz
VHF coverage between 60 .. 260 MHz
-138 dBm MDS at 500Hz bandwidth in HF
-142 dBm MDS at 500Hz bandwidth in VHF
+26 dBm IIP3 on HF at maximum gain
+13 dBm IIP3 on VHF at maximum gain
110 dB dynamic range in HF
95 dB dynamic range in VHF
120 dB Image Rejection
Very low phase noise PLL (-110 dBc/Hz @ 1kHz separation @ 100 MHz)
+10 dBm Maximum RF input
No Silicon RF switch to introduce IMD in the HF path
Routable RF inputs
Wide Band RF filter bank
Tracking RF filters
Sharp IF filters
Smart AGC with real time optimization of the gain distribution
All RF inputs are matched to 50 ohms
2 x High Dynamic Range Sigma Delta ADCs @ up to 36 MSPS
600 kHz alias and image free output
18 bit Digital Down Converter (DDC)
0.5 ppm high precision, low phase noise clock
4 x Programmable GPIO's
No drivers required! 100% Plug-and-play on Windows Vista, Seven, 8, 8.1 and 10
Industrial Operating Temperature: -45°C to 85°C