Things are looking good at WRC-12. Approval of an international amateur radio allocation around 470 kHz seems very likely: http://www.arrl.org/news/agenda-item-1-23-passes-committee-moves-to-plenary
Didn't I read somewhere that this band only allowed 1W ERP and antennas less than 10m high or am I thinking of another allocation? VE9AA Mike Mike, Coreen & Corey Smith 699 Rte 616 Keswick Ridge NB C
The legal limit is defined in terms of EIRP, 1 to 5 watts. You only need a few percent efficiency if you have a reasonably powerful transmitter. Any decent 160 meter transmit antenna, with additional
Several are working well over 500 miles at night and 300 daytime with under 100W into similar antennas and that is with regular CW. ERP is often under 10W mainly due to a small radial field. Carl KM1
I believe the proposed rule is 2 watts ERP. The typical 70 x 50 foot top band inverted-L can be base loaded on 500 kHz using a 500 kHz inductor. Given an inductor Q of 300 and ground loss of 20 ohms
It isn't hard to produce 5 watts eirp at 472 kHz, a few hundred watts watts through a tuner into your favorite 160 or 80 meter vertical will do the job easily. Much higher noise levels at 472 khz pre
Everyone should check out the following link: http://www.500kc.com/ One local amateur - Pat Hamel, W5THT, is participating in this experimental effort. He has been keeping the members of the Magnolia
Finally - A use for my old 50gal plastic rain barrel and 350' of extra fencing wire ! (loading coil) HI VE9AA Mike Mike, Coreen & Corey Smith 699 Rte 616 Keswick Ridge NB Canada E6L 1T1 -- Original M
I don't want to say for certain, but "seems" like VE1ZZ played around with this band as well some years back. I vaguely recall reading a story about Jack making this humoungous loading coil, but don'
Hi Mike, I think you're confusing this with the so-called "Lowfers Band", from 160- to 190-KHz.. ~73~ de Eddy VE3CUI - VE3XZ _______________________________________________ UR RST IS ... ... ..9 QSB
Hi Again Mike, Yes, as I recall reading (in RAC's "The Canadian Amateur" magazine, I think), one had to apply for a LIMITED number of special permits in Canada to operate the band--Jack was successfu
Author: "Jose E. Ribeiro Sa" <zemurtosa@mail.telepac.pt>
Date: Mon, 13 Feb 2012 12:22:55 -0800
I do hold a 600m special transmit license, never gave it a serious try, any tips on how to get started. As soon as I know noone ever transmitted on 500 kHz in Portugal. 73 Jose CT1EEB You can have a
Somewhere, somebody managed to get a TS-940 to transmit down there at around the 10 milliwatt level out of the transverter port. Ive been looking for that info but no luck yet. Carl KM1H -- Original
Ten years a go i managed to pick up the pre-driver output of my FT-990 that way: FT990 --> converter --> driver with TDA2030 --> PA G0MRF with 4 mosfet IRFP450 --> variometer --> antenna. The final o
I copied VE1ZZ here in Western Massachusetts on 136 hz some years back. 73, Tom, W1TO _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK