sp 2000
23 links
Pages: [prev] 1 2
Antennas : VHF UHF- Modifications to the Diamond V2000 and similar antennas
- This kind of antenna has grown in popularity over the last years because it gives you a decent performance and triband capabilities. But its 50 MHz design is far from optimal. Here you can learn how to improve its 50 MHz performance in a very easy way.
[ Hits: 627 | Votes: 2 | Rating: 9.5 ]
- Recognition of CW signs at different listening levels and frequencies
- The recognition of telegraphy masked by noise at 40 and 80 signs/min telegraphy speed was studied in 10 normal-hearing subjects at different sound pressure levels (25-85 dB SPL in steps of 5 dB) as well as at different test frequencies (2000, 1000, 800, 630, 500 and 250 Hz). The ability to recognize the signs varied with varying SPL. Recognition for most of the subjects was best at an SPL close to 70 dB.
All subjects improved their recognition as the frequency was lowered to 500 Hz, some even at 250 Hz. These facts should be taken into consideration when training telegraphy operators as well as in the construction of radio receivers to permit listening at low frequencies. Furthermore, the critical ratio was calculated at the different test frequencies.
[ Hits: 81 | Votes: 1 | Rating: 7 ]
- IC R7100 Specifications
- VHF-UHF receiver covers from 25 to 800 and 900 to 2000 MHz in the following modes: AM, AM-W, FM, FM-W, FM-N, USB and LSB
[ Hits: 277 | Votes: 0 | Rating: 0 ]
Pages: [prev] 1 2
Not satisfied ? Lookup Google Custom Search Engine for sp 2000
Search sp 2000 with: Yahoo!, DuckDuckGo
, Bing
Search
Related Searches
You can try similar terms
2000 mhz ar 2000 ara 2000 dx 2000 ft 2000 ft-2000 kt 2000 log 2000 sw 2000 tr 2000 ts 2000 ts 2000 cat ts 2000 dsp ts-2000 acom 2000
Get our links, Everywhere!
Follow us on Social Networks
|
RSS Feeds |
Sign up for daily Newsletter
Service provided by Google FeedBurner
Free for your Site
Add our gadgets to your site
Daily Top 10 links