EEVblog – Podcast

Phil VK2BDF from the Manly Warringah HAM Radio Society shows off his 1970’s vintage home made 200MHz DIY spectrum analyser. Forum: http://www.eevblog.com/forum/blog/eevblog-575-diy-1970s-spectrum-analyser/ Podcast: Download

Dave looks through the documentation for the vintage 1980 NEC PCN-1205AH 5kW Analog TV Transmitter that used to transmit the CH7 TV frequency in Sydney He then tears down the HPA-3696 IF Modulator used in the system. Facility tour HERE Forum HERE Podcast: Download

Mailbag Monday SMD Adapter PCBs NXP SMD Package Cheats: Leaded Non-Leaded HP 41 Calculator upgrade PCB OHARARP Lab Notebooks CNC-Design in Finland Laser Cut 3D Signs Hacked Microsoft Lifecam DIYINHK USB Microscope uARM 4-Axis Arduino Open Source Hardware Robotic Arm Kickstarter Forum HERE Podcast: Download

Fundamentals Friday. Dave explains Gain Bandwith Product and how it’s possible to increase your system bandwidth by cascading opamps in series. Also, a discussion on the associated noise issues. A breadboard example shows how variable GBWP can be, and how it can relate to distortion. Opamp Noise Tutorial Forum HERE …

What is inside one of the best quality wireless microphones on the market? Dave takes a look inside the Sennheiser EW100 G3 SK100 Bodypack Transmitter and the EK100 Diversity Receiver. Datasheets: ADF4117 SA575 BH4127 Forum HERE Podcast: Download