Body
MickThe 735 has had the diodes cut so that it can receive and transmit on anything from "DC to light" according to the tech who did the job on it.Since I am a licensed ham, and also an ocean going vessel, I used both single sideband ham and marine single side band, depending on my contacts, and propagation conditions.
100 watts used close to 20 amps of 12 volt DC power, though I never actually measured it.Cheers Warren
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On Thu, Jun 7, 2018 at 3:45 PM, Mick [email protected] [EVGRAY]<[email protected]> wrote:
Hi Warren,
Had a nice ionospheric bounce going. I assume you were using CW on the ICOM correct or did you maintain a voice skip? Cool rig what was the input power?
On 6/6/2018 11:24 AM, Warren Keillor [email protected] [EVGRAY] wrote:
Mick
I don't know a lot about RF, though I am an advanced Canadian Ham. I managed to keep a schedule with another vessel, on 80 meters, that was in the South Pacific, while I was in the Eastern Caribean, using a hundred watt ICOM 735 and about a 65 ft long wire antenna strung in the rigging, with a Diwai mannual tuner. Time of day, sun spots, and Russian 1000watt rude fishing boats did play a factor on our weak signals. Cheers Warren
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On Wed, Jun 6, 2018 at 12:19 PM, [email protected] [EVGRAY] <[email protected]> wrote:
https://www.electronics-notes.com/articles/ham_radio/amateur-propagation/moonbounce-propagation-eme.php
Here is a link for ham radio folk about EME or moonbounce radio. The path loss in best case scenarios is very high.
Can someone who knows more RF electronics theory such as Ole or Hector please comment as to how this is overcome with 1000 watt input transmitter when the maximum theoretical S/N ratio and 252 db PL should require transmitters larger than AM radio stations.
I must be missing something. Also checking the amateur radio sites for an answer.
Thanks,
Mick
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