g4bao.com

	G4BAO.COM Microwave Amateur Radio Station, Waterbeach. 8km North Of Cambridge JO02cg
To Contact me: Skype johng4bao ON4KST Microwave Chat E-mail john at g4bao dot com QTHR Home About me  My Equipment Projects Related links Downloads For Sale Backscatter	Welcome to G4BAO's Amateur Radio Website  Microblog,  22nd  November 2009          1.3GHz PA project - update  .   Sadly I've finally run out of MRF9045 devices for the PA kits, so that's "it" for complete kits or spare devices I'm afraid. I will continue to ship the kits without devices or heatspreaders if you can find your own. Look on the "for sale" pages for prices of kits without devices. I will add details to the build instructions for the heatspreader and how I attach the device to the heatspreader and PCB.    Developments  I may soon release some complete and tested "prototype" amplifier boards (60 Watt and 45 Watt) for sale in the Jumble Sale pages. These are kits I've made up to try different devices, bands etc. If anyone is interested in purchasing these, email me for details. Documentation update As I've had a few questions about the best way to assemble the PA in an Eisch Tinplate box, I've added some assembly instructions to the along with the errata on the Downloads page. This is included in the assembly notes supplied with issue 1.2 boards and also on the downloads page. The Great g4bao.com Jumble sale I've added a few more surplus items to the Jumble sale, email me for details. All the stuff is second hand unless stated otherwise. You can pay me in cash (in person) or, at no cost to you, with your credit card via PayPal, but please wait until I send you a PayPal payment request before you do so I can work out the postage and packing .     Wideband Masthead preamp project and bias tee, update. In brief, it covers 30MHz to 3GHz, with a sub 3.5dB noise figure and 20 dB gain over 30MHz to 500MHz. above this the NF and gain drop off somewhat, but still has under 5dB NF and 19dB gain at 3GHz. If there is sufficient interest, I plan to produce kits. Email me if you would be interested. I reckon the pcb minikits will be around the £30-£35 mark, including the bias tee,
Waterbeach in the Winter Floods