It states on the Clifton Labs homepage: "Clifton Laboratories is no longer in business. No products are available for sale or repair." However, the PDF manual including the schematic for the BCB high
Concur; the plug-in filters at the bottom right of the signal conditioner photo I sent earlier are homebrew BPFs based on W3NQN design criteria. Ed published a two (2) part article in May / June 1998
Sorry, that article is for the TX BPFs.... W3NQN receive BPFs are in the July/Aug 1999 issue of QEX. _________________ Topband Reflector Archives - http://www.contesting.com/_topband
I should be QRV this evening with my 1928 MOPA running about 19W input / 11W output. Already worked some EU stations with it (Four Square TX), so hoping to catch some west of Rockies guys tonight. ht
Hand keying with an old bug.... oscillator HV supply also rectified with a Slop Jar bank (ie. electrolytic rectifiers). Will get a late start; couple hour drive from home yet. 73 Eric NO3M __________
Heard Jim, K9JWV, around 0216z with good sigs, but couldn't get his attention. Caught Jim, K9YC, calling CQ low in the band, gave it a try and made an easy QSO. Jim/YC's QRP sigs have been getting be
Signal peaks on SW beverage (245 deg) and 8-circle array aimed SW (245 deg) here in WPA (EN91wr). Slightly more signal on the west than south directions, so extrapolate slightly more west than 245 de
Re: http://www.arrl.org/news/fcc-opens-630-and-2200-meter-bands-stations-must-notify-utc-before-operating Notification link for UTC: https://utc.org/plc-database-amateur-notification-process/ If you
Quite a loaded question... for every 10 guys on the band, there will be 20 ways they went about getting on (including some things going up in smoke and fire). Power requirements depend on your antenn
Anyone heading to Frostfest and Dayton? Looking for someone that might be able to haul one or two small 36 in. racks. Pickup Frostfest, drop-off Dayton. Please contact off-list. Thanks. 73 Eric NO3
I'm in the process of finding a replacement cable to supply power (+24VDC) and differential serial signaling (RS-485) to my remote RX switching matrix and vertical arrays. Total run is about 600ft.
I've used a three beverage broadside array aimed NE on 160m for the last 4 years or so and it works very well. Each beverage is 1000ft (304m) long and spaced about 300-310ft. For best results on 160
Frank If you really want a 3-port splitter, see here: http://no3m.net/wp-content/uploads/2018/12/splitter-3.png Two more common alternatives using 2-port splitters: http://no3m.net/wp-content/uploads
Corrected the autotransformer turns/tap on the 2-way splitter examples... http://no3m.net/wp-content/uploads/2018/12/splitters.png If you really want a 3-port splitter, see here: http://no3m.net/wp-c
Looking for a 25kV SPDT vac relay. Please contact in private Email w/ what you have and price. 73 Eric NO3M _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflec
A clean transmitter also helps the situation as well as a minimal (or none) electronics in the receive path prior to the receiver, ie. passive elements in a vertical receive array or beverages. If a
The new FST4 mode has almost completely superseded JT9 on 630 and 2200m, the only remaining JT9 signals being from those that missed the announcement / release or are waiting on a general availabilit
Another option is to broadside a pair of DHDL (AA7JV/TX3A) antennas (also known as the bowtie, D-KAZ, and other names that merely describe alternate physical configurations, but the electrical princi
Hi Jim, hope all is well and settling down out there. I think the performance was favorable on 160m... we only did limited testing, but I did work VK4YB using several different T/R periods (30,60,120
Anti-phased double loops are also a good way to approach an RDF of 10dB on 2200m (137kHz). 1/2lambda is nearly 3600ft.... so broadside arrays and beverages are usually a non-starter... close spaced