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Is Mike delusional?
- Thread starter rabbiporkchop
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So if the S-meter reads +30db time to break out the Baseball Bat?!
I already posted a comment on his video telling him that if he follows the service manual alignment procedure that the meter will behave normally.
If 2 meters give different readings they are both accurate. Is that the point of this thread? Does that apply to watt meters, volt meters, and tire gauges as well? 
Be careful what you ask for. If we start using the proper terminating resistors on our test benches people will stop buying tuned coax jumpers. I heard a guy say he paid $85 for his. Is that the going rate for them?
Be careful what you ask for. If we start using the proper terminating resistors on our test benches people will stop buying tuned coax jumpers. I heard a guy say he paid $85 for his. Is that the going rate for them?
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Mike's magic number of 50uV for S9 isn't delusionary. 50uV/-73dBm is the S9 setting for every single amateur radio S meter calibrated to the IARU standard for S9, a standard that was agreed upon in 1930.
IARU Region 1 Technical Recommendation R.1 defines S9 for the HF bands to be a receiver input power of -73 dBm. This is a level of 50 microvolts at the receiver's antenna input assuming the input impedance of the receiver is 50 ohms.
CB meters by being calibrated to 100uV are actually the ones being incorrectly calibrated and almost all CB manufacturers are doing it. You'll not find an amateur radio transceiver manufacturer specifying 100uV for S9.
IARU Region 1 Technical Recommendation R.1 defines S9 for the HF bands to be a receiver input power of -73 dBm. This is a level of 50 microvolts at the receiver's antenna input assuming the input impedance of the receiver is 50 ohms.
CB meters by being calibrated to 100uV are actually the ones being incorrectly calibrated and almost all CB manufacturers are doing it. You'll not find an amateur radio transceiver manufacturer specifying 100uV for S9.
Last time I asked it was $65 and you have to buy three at a time for him to make them. It isn't worth his time to do just one.If 2 meters give different readings they are both accurate. Is that the point of this thread? Does that apply to watt meters, volt meters, and tire gauges as well?
Be careful what you ask for. If we start using the proper terminating resistors on our test benches people will stop buying tuned coax jumpers. I heard a guy say he paid $85 for his. Is that the going rate for them?
I'm not a disciple of anyone.
Mike told us what he did to create a problem. Mike complained about the problem. Mike then proceeded to blame the manufacturer for the problem. I simply pointed out the solution to his problem. Even the Cobra 148 doesn't comply with the standard. The only one that seems to be confused is Mike.
I simply shared some service Manuals to eliminate the confusion.
I don't have a dog in the fight. I'm using a 2950 the bargraph is useless.
That's the whole point of this thread.
Not all AGC circuits offer the same amount of gain. Presumably the manufacturers of the cheaper equipment compensate for the differences by deviating from the standard. I think it's safe to say that these engineers that design these radios know what they're doing even if not meeting the standard. The Cobra 148 works just fine right out of the box.
Why readjust the meter and make it spend most of its time pegged at the top?
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You can align a radio so that S-9 corresponds to 50 microvolts input however pretty much ALL radios, both CB/export and amateur types, will NOT have 6 dB per S-unit linearly across the scale. usually the low end of the scale may exhibit only one or two dB per S-unit while it may achieve 6 dB near S-9. IOW IMHO there is far too much worry about S-meter calibration and it should be used as a reference only and not as an absolute.
What does it really matter. It is a CB radio. So some one talking to you says what are you reading me at. So you are a bit off.
Not NASA.
Not NASA.
Without an accurate s meter, how would you know if someone was blowing smoke, or merely making the trip? All of these reports have a direct correlation to the s meter reading, and it is your responsibility to have a calibrated s meter so you can give the proper signal report. This procedure is clearly outlined in FCC Part 98 Subpart C.
If you're not a disciple of anyone then why do you try to discredit every radio tech out there except Fine Tune CB Shop? I have read your threads and posts bashing Bob's CB Shop, DTB Radio, MikesRadioRepair, etc. on this forum and other forums all over the internet. Yet you never criticize Fine Tune CB Shop.
Could it be that you're getting paid to be a shill for Fine Tune CB Shop?
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