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What are the pro's/con's of choosing between these frequencies for an RF project? Which has better distance? Is one less susceptible to inteference? Does one frequency travel better through obstacles (like walls)? Has anyone used the easyradio RF modules from http://www.narsrf.com? Thank you, Harris Cohen |
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RF transmitter: 433Mhz vs 860-920Mhz Which is better?
Started by ●December 4, 2003
Reply by ●December 4, 20032003-12-04
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Depends on what you want to do. I've done quite a bit with 460mHz radios, over 10-20km using the bx24. I'm also about to try some cheap short range modules..about 1/3 the price of the ones you quoted. Tell me more. neil harris_cohen wrote: > > What are the pro's/con's of choosing between these frequencies for an > RF project? > Which has better distance? > Is one less susceptible to inteference? > Does one frequency travel better through obstacles (like walls)? > Has anyone used the easyradio RF modules from http://www.narsrf.com? > Thank you, > Harris Cohen > > <http://www.netflix.com/Default?mqso`178338&partidA16730" target="_blank" rel="nofollow">http://rd.yahoo.com/SIGcb0qina/M&7637.4116730.5333196.1261774/D=egroupweb/S06554205:HM/EXP70663214/A53618/R=0/*http://www.netflix.com/Default?mqso`178338&partidA16730 > ">http://docs.yahoo.com/info/terms/>. |
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Reply by ●December 4, 20032003-12-04
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At 05:26 PM 12/4/2003, you wrote:
>What are the pro's/con's of choosing
between these frequencies for an >RF project? >Which has better distance? >Is one less susceptible to inteference? >Does one frequency travel better through obstacles (like walls)? I did some work with short range video and the general rule of thumb is the higher the frequency the lower the range and the higher the susceptibility to terrestrial interference. The tradeoff is the higher the frequency the more data you can move - a big consideration for video work. Paul C8-) ---------- --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.547 / Virus Database: 340 - Release Date: 12/2/2003 |
Reply by ●December 5, 20032003-12-05
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I want to build telemetry devices for outdoor data collection. The reason I like the easyradio modules is because they handle all of the software overhead making the implementation easier for a novice like me. Who was the manufacturer of the 460mHz device? Where can I find it? --- In , Neil Jepsen <njepsen@i...> wrote: > Depends on what you want to do. I've done quite a bit with 460mHz > radios, over 10-20km using the bx24. I'm also about to try some cheap > short range modules..about 1/3 the price of the ones you quoted. Tell me > more. > neil > harris_cohen wrote: > > > > What are the pro's/con's of choosing between these frequencies for an > > RF project? > > > > > > Which has better distance? > > Is one less susceptible to inteference? > > Does one frequency travel better through obstacles (like walls)? > > > > > > Has anyone used the easyradio RF modules from http://www.narsrf.com? > > > > > > Thank you, > > Harris Cohen > > > > > > > > <http://rd.yahoo.com/SIGcb0qina/M&7637.4116730.5333196.1261774/D= egroupweb/S06554205:HM/EXP70663214/A53618/R=0/*http://www.net flix.com/Default?mqso`178338&partidA16730> > > > > > > ">http://docs.yahoo.com/info/terms/>. |
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Reply by ●December 5, 20032003-12-05
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They were friom hvwtech.com harris_cohen wrote: > I want to build telemetry devices for outdoor data collection. The > reason I like the easyradio modules is because they handle all of the > software overhead making the implementation easier for a novice like > me. > > Who was the manufacturer of the 460mHz device? Where can I find it? > --- In , Neil Jepsen <njepsen@i...> wrote: > > Depends on what you want to do. I've done quite a bit with 460mHz > > radios, over 10-20km using the bx24. I'm also about to try some > cheap > > short range modules..about 1/3 the price of the ones you quoted. > Tell me > > more. > > neil > > > > > > harris_cohen wrote: > > > > > > What are the pro's/con's of choosing between these frequencies > for an > > > RF project? > > > > > > > > > Which has better distance? > > > Is one less susceptible to inteference? > > > Does one frequency travel better through obstacles (like walls)? > > > > > > > > > Has anyone used the easyradio RF modules from > http://www.narsrf.com? > > > > > > > > > Thank you, > > > Harris Cohen > > > > > > > > > > > > > <http://rd.yahoo.com/SIGcb0qina/M&7637.4116730.5333196.1261774/D= > egroupweb/S06554205:HM/EXP70663214/A53618/R=0/*http://www.net > flix.com/Default?mqso`178338&partidA16730> > > > > > > > > > ">http://docs.yahoo.com/info/terms/>. > > <http://www.netflix.com/Default?mqso`178338&partidA16732" target="_blank" rel="nofollow">http://rd.yahoo.com/SIGcfal5ld/M&7637.4116732.5333197.1261774/D=egroupweb/S06554205:HM/EXP70686263/A53618/R=0/*http://www.netflix.com/Default?mqso`178338&partidA16732 > ">http://docs.yahoo.com/info/terms/>. |
