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#1
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excellent receiver test
do you want to see if your receiver has the "right stuff" ? here is an
excellent test. in the evening (about 0200-0700) tune to 6139.8 with your receivers basic settings, you should get a terrible het (wiht 6140). if you can get rid of the het and listen to the low power south american local with great clarity then your receiver has the right stuff. if no het is present, then try later when the station on 6140 is present. the S800 can do it supurbly with its selectable side band sync. MOST receivers can't even do a fair job or they take a lot of work to get barely decent results. some of the receivers that can do it give poor fidelity. |
#2
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excellent receiver test
mike maghakian wrote:
do you want to see if your receiver has the "right stuff" ? here is an excellent test. in the evening (about 0200-0700) tune to 6139.8 with your receivers basic settings, you should get a terrible het (wiht 6140). if you can get rid of the het and listen to the low power south american local with great clarity then your receiver has the right stuff. if no het is present, then try later when the station on 6140 is present. the S800 can do it supurbly with its selectable side band sync. MOST receivers can't even do a fair job or they take a lot of work to get barely decent results. some of the receivers that can do it give poor fidelity. Most good systems (DSP or otherwise) can also notch it out. -- Brian Denley http://home.comcast.net/~b.denley/index.html |
#3
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excellent receiver test
I looked for the "low power south american local " and only found a
"ROCKCRUSHER south american local " at 40 db over s-9 here in Kentucky?? I'm only using an Icom IC-78 Export Amateur rig...Superhet is gone by hitting the notch...not that it mattered much anyway cause the station is a lot louder than it is here.By the way I tried it in AM....SSB is too easy Will turn on the Tennessee Trash RX-340 after dinner and let you know if its a runner up with the "800" If thats a weak station I'd sure as hell worry about my radio if I hit a strong one! LOL "mike maghakian" wrote in message ... do you want to see if your receiver has the "right stuff" ? here is an excellent test. in the evening (about 0200-0700) tune to 6139.8 with your receivers basic settings, you should get a terrible het (wiht 6140). if you can get rid of the het and listen to the low power south american local with great clarity then your receiver has the right stuff. if no het is present, then try later when the station on 6140 is present. the S800 can do it supurbly with its selectable side band sync. MOST receivers can't even do a fair job or they take a lot of work to get barely decent results. some of the receivers that can do it give poor fidelity. |
#4
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excellent receiver test
Superhet?
Damn I'm gittin old...mind is going HET is what I meant LOL! "johnboy" wrote in message ... I looked for the "low power south american local " and only found a "ROCKCRUSHER south american local " at 40 db over s-9 here in Kentucky?? I'm only using an Icom IC-78 Export Amateur rig...Superhet is gone by hitting the notch...not that it mattered much anyway cause the station is a lot louder than it is here.By the way I tried it in AM....SSB is too easy Will turn on the Tennessee Trash RX-340 after dinner and let you know if its a runner up with the "800" If thats a weak station I'd sure as hell worry about my radio if I hit a strong one! LOL "mike maghakian" wrote in message ... do you want to see if your receiver has the "right stuff" ? here is an excellent test. in the evening (about 0200-0700) tune to 6139.8 with your receivers basic settings, you should get a terrible het (wiht 6140). if you can get rid of the het and listen to the low power south american local with great clarity then your receiver has the right stuff. if no het is present, then try later when the station on 6140 is present. the S800 can do it supurbly with its selectable side band sync. MOST receivers can't even do a fair job or they take a lot of work to get barely decent results. some of the receivers that can do it give poor fidelity. |
#5
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excellent receiver test
johnboy wrote: I looked for the "low power south american local " and only found a "ROCKCRUSHER south american local " at 40 db over s-9 here in Kentucky?? I'm only using an Icom IC-78 Export Amateur rig...Superhet is gone by hitting the notch...not that it mattered much anyway cause the station is a lot louder than it is here.By the way I tried it in AM....SSB is too easy Will turn on the Tennessee Trash RX-340 after dinner and let you know if its a runner up with the "800" If thats a weak station I'd sure as hell worry about my radio if I hit a strong one! LOL "mike maghakian" wrote in message ... do you want to see if your receiver has the "right stuff" ? here is an excellent test. in the evening (about 0200-0700) tune to 6139.8 with your receivers basic settings, you should get a terrible het (wiht 6140). if you can get rid of the het and listen to the low power south american local with great clarity then your receiver has the right stuff. if no het is present, then try later when the station on 6140 is present. the S800 can do it supurbly with its selectable side band sync. MOST receivers can't even do a fair job or they take a lot of work to get barely decent results. some of the receivers that can do it give poor fidelity. Mike is on the left coast in Washington state I believe. Your location would make a south american station easy to receive. Les |
#6
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excellent receiver test
johnboy wrote: I looked for the "low power south american local " and only found a "ROCKCRUSHER south american local " at 40 db over s-9 here in Kentucky?? I'm only using an Icom IC-78 Export Amateur rig...Superhet is gone by hitting the notch...not that it mattered much anyway cause the station is a lot louder than it is here.By the way I tried it in AM....SSB is too easy That's Radio Lider on 6139.8 in Bogota, Colombia. I believe they run 5 kW. dxAce Michigan USA |
#7
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excellent receiver test
"mike maghakian" wrote in message
... do you want to see if your receiver has the "right stuff" ? here is an excellent test. in the evening (about 0200-0700) tune to 6139.8 with your receivers basic settings, you should get a terrible het (wiht 6140). if you can get rid of the het and listen to the low power south american local with great clarity then your receiver has the right stuff. if no het is present, then try later when the station on 6140 is present. the S800 can do it supurbly with its selectable side band sync. MOST receivers can't even do a fair job or they take a lot of work to get barely decent results. some of the receivers that can do it give poor fidelity. Sounds like a repeat of the same thread you started back in May, viz http://www.radio-forum.com/shortwave...ow_438287.html . I would suggest that the interferer would have to be transmitting on one sideband only for any receiver to be able to pull out the other sideband of the desired station, if the carriers are co-channel. In which case, lots of radios with fairly steep-skirted filters would do fine. Tom |
#8
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excellent receiver test
the serious problem with deep skirted filters is that the audio will stink !
besides almost no receivers are sold with deep skirts, most have the cheapest piece of garbage they can find. Don't know of any receiver sold in the past 20 years below $500 that had decent filters other than the S800 or E1 if anyone is aware of a sub $500 new radio with excellent filters please let me know. I may have forgotten (but I doubt it) "Tom Holden" wrote in message .. . "mike maghakian" wrote in message ... do you want to see if your receiver has the "right stuff" ? here is an excellent test. in the evening (about 0200-0700) tune to 6139.8 with your receivers basic settings, you should get a terrible het (wiht 6140). if you can get rid of the het and listen to the low power south american local with great clarity then your receiver has the right stuff. if no het is present, then try later when the station on 6140 is present. the S800 can do it supurbly with its selectable side band sync. MOST receivers can't even do a fair job or they take a lot of work to get barely decent results. some of the receivers that can do it give poor fidelity. Sounds like a repeat of the same thread you started back in May, viz http://www.radio-forum.com/shortwave...ow_438287.html . I would suggest that the interferer would have to be transmitting on one sideband only for any receiver to be able to pull out the other sideband of the desired station, if the carriers are co-channel. In which case, lots of radios with fairly steep-skirted filters would do fine. Tom |
#9
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excellent receiver test
for a receiver with a good DSP section, that is true, but a manual notch is
a pain in the neck in my opinion, you have to worry about the width and depth and centering it. the R8 notch was worthless as were most of the others I have worked with. a DSP autonotch is pretty nice tho. "Brian Denley" wrote in message ... mike maghakian wrote: do you want to see if your receiver has the "right stuff" ? here is an excellent test. in the evening (about 0200-0700) tune to 6139.8 with your receivers basic settings, you should get a terrible het (wiht 6140). if you can get rid of the het and listen to the low power south american local with great clarity then your receiver has the right stuff. if no het is present, then try later when the station on 6140 is present. the S800 can do it supurbly with its selectable side band sync. MOST receivers can't even do a fair job or they take a lot of work to get barely decent results. some of the receivers that can do it give poor fidelity. Most good systems (DSP or otherwise) can also notch it out. -- Brian Denley http://home.comcast.net/~b.denley/index.html |
#10
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excellent receiver test
mike maghakian wrote: for a receiver with a good DSP section, that is true, but a manual notch is a pain in the neck in my opinion, you have to worry about the width and depth and centering it. the R8 notch was worthless as were most of the others I have worked with. a DSP autonotch is pretty nice tho. Worthless? Me thinks operator error. dxAce Michigan USA I swear by, not at, Drake receivers.© |
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