Bring the parts, cables plus connectors to the store when shopping. The biggest problem is cable bend radius.
On 3/14/2011 4:39 PM, Jim Jerzycke wrote: > > Joe speaks wisdom when he says get a bigger one that you think you need. > I have a whole pile of those boxes in the garage because I thought > they were "big enough" for the project I had intended to build in them. > 73, Jim > > On 03/14/2011 08:13 PM, Joe Leikhim wrote: >> Paul; >> Check the electrical departments at Home Depot and Lowes for inexpensive >> plastic boxes made by Carlton. These are fully weatherproof boxes >> without any knockouts that are excellent for weatherproofing >> preamplifiers. You will probably need some type N bulkheads that have a >> long neck so that you can pass through the plastic plus whatever >> aluminum gauge ground plane you might want to bond your preamps to. I >> just got through rebuilding a wideband amplifier 25 MHz -1 GHz for my >> receiver, and I have a second one built at least 12 years ago for >> 240-270 MHz that although the box is pretty weathered, the electronics >> inside including a bandpass graph and notes on paper inside, look like >> new. Absolutely no water intrusion although outside for years. Get a >> bigger deeper box than you think you need. I used 6x6x5 inch boxes. >> >> For this one I used a Polyphazer "pickoff" to extract 15V DC from the >> coax to run a gasfet preamp and a WJ 28 dB gain T08 amplifier. >> >> >> >> > > > -- Joe Leikhim Leikhim and Associates Communications Consultants Oviedo, Florida www.Leikhim.com jleik...@leikhim.com 407-982-0446 _______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
