| Author |
Message |
    
Im4jc
Junior Member
Username: Im4jc
Post Number: 24
Registered: 11-2005
| | Posted on Friday, December 30, 2005 - 4:46 am: | 
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Okay. What do you call the 6th digit in a frequency counter? For the frequency 27.3853 MHZ, the 5 would be 5 kilohertz, right? So what is the next one to the right, the "1"? All over the forum, they are calling it Kc, but what does Kc stand for?
In other words, if someone is asking me how far off freq they are when talking to me on sideband, and I have to tune up to .3853 to hear them clearly, how far off are they?
Thanks. |
Bruce
Senior Member
Username: Bruce
Post Number: 3361
Registered: 9-2003
| | Posted on Friday, December 30, 2005 - 7:10 am: |
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KHZ = 1000 HZ
A HZ is the measure of how many times per second the wave is being generated.
your example should read 27,385,300 Hz per second.
They are 300 hz off frequency |
Patzerozero
Senior Member
Username: Patzerozero
Post Number: 2143
Registered: 7-2004
| | Posted on Friday, December 30, 2005 - 7:56 am: |
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from the decimal point going right, it is 100,000 hertz, 10,000 hertz, 1,000 hertz, 100 hertz. OR 100 kHz, 10 kHz, 1 kHz, 100 Hz. kc is 'kilocycle', though more correctly it should be called 'kilocycles per second'-mr. hertz lent his name, hertz, to replace '-cycles per second'. the 'true' freq for channel 38 would be 27.3850 mHz(megahertz), in between 37 & 38 @ 27.3800 would be considered 'down 5 kc's'. approx 100-150Hz is about where you'd consider a signal to be far enough 'off frequency' where you would have to retune to understand them-so your example of 27.3853 is about 300Hz 'off frequency' & would require the listener to 'retune' his clarifier, or VFO on a ham rig. |
Hollowpoint445
Advanced Member
Username: Hollowpoint445
Post Number: 978
Registered: 6-2004
| | Posted on Friday, December 30, 2005 - 8:21 am: |
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kc is an abbreviation for kilocycles per second or 1 kilohertz. Before the unit Hertz was adopted, you stated frequencies in cycles per second. One Hertz is equal to one cycle per second.
In your example I'd call the place to the right of the 5 the 100's Hertz place or .1kHz place.
Incidentally, that's why CB frequency counters are useless for anything more that a ballpark idea of your operating frequency. Even if the counter was perfectly on frequency (fat chance!) you could be off as much as 100 Hertz and still show as on frequency. With the error of the counter's oscillator taken into account you can be several hundred Hertz off frequency and not know. |
Im4jc
Junior Member
Username: Im4jc
Post Number: 25
Registered: 11-2005
| | Posted on Friday, December 30, 2005 - 2:49 pm: |
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Ummm. Could you guys be a little more specific please?
JUST KIDDING! Man, talk about getting your question answered...in full!
Thanks guys. 300 Hz. |
Wildrat
Advanced Member
Username: Wildrat
Post Number: 547
Registered: 12-2003
| | Posted on Friday, December 30, 2005 - 4:19 pm: |
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In America our power is 60 cycle(hertz)
In England their power is 50 cycle(hertz)
On most American aircraft the freq. is 385 to 395 cycle(hertz) which is the basic speed, then a frequency and Load controller brings it up to 400 cycle(hertz)
Wildrat
CEF674 |
Al_lafon
Intermediate Member
Username: Al_lafon
Post Number: 159
Registered: 3-2005
| | Posted on Friday, January 13, 2006 - 4:10 pm: |
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Ok now tell me how to get my freq to read
the 7.8 Mhz Osc it will not read below 10.240
for some unknow problem !!! |
Bruce
Senior Member
Username: Bruce
Post Number: 3401
Registered: 9-2003
| | Posted on Friday, January 13, 2006 - 7:09 pm: |
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a counter ? what kind ? mine goes 100 khz to 500 mhz |
Al_lafon
Intermediate Member
Username: Al_lafon
Post Number: 160
Registered: 3-2005
| | Posted on Friday, January 13, 2006 - 8:29 pm: |
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Thanks it 20Hz to 1000Mhz but i can not get it to
read a 7.8 Mhz Osc in a TRC-459 i am trying to
get aligned up for a kid here in Maryland. |
Wildrat
Advanced Member
Username: Wildrat
Post Number: 644
Registered: 12-2003
| | Posted on Friday, January 13, 2006 - 11:56 pm: |
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If you want to ask for help with a problem with your radio, you should start a new post so people will see it, not tack it on to another members post that is seeking help.
Wildrat |
Bruce
Senior Member
Username: Bruce
Post Number: 3404
Registered: 9-2003
| | Posted on Saturday, January 14, 2006 - 5:22 am: |
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hummmm maby the output of the osc is not high enough |
