| Author |
Message |
    
Tech808
Moderator
Username: Tech808
Post Number: 6097
Registered: 8-2002
| | Posted on Thursday, June 16, 2005 - 8:31 am: | 
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I thought this would be fun and a learning experience for some of the Copper Forum Member's who are new to the radio world and who are getting into the hobby for the first time.
#1 ~ If your radio is transmitting 4 watts of power to the antenna, what is the ratio / or how much would you need to increase the output power from your radio for the person you are talking with to notice even 1 single S-unit of difference in your transmitted signal?
#2 ~ At what height do you want to try and have the load/connection point for best result's of an Omni Antenna or your Beam's at for use on the 11 meter / CB band?
#3 ~ What is the % of Modulation that it takes before your signal becomes distorted?
#4 ~ What or how should a person check the SWR on their Antenna (Base or Mobile) to make sure it is set correctly for for operation the complete 11 meter/CB Band?
#5 ~ What is the Special NAME of the tool that causes more damage than any other tool and keeps most CB Shops in business repairing Radio's and Amps? 
#6 ~ What TYPE of hand tool's should a person use when making adjustment's or working on a radio or Amplifier?
#7 ~ What is a Static Strap/Mat?
#8 ~ When should you use a Static Strap/Mat?
#9 ~ What does "FORWARD" Power Mean?
#10 ~ What does "REFLECTED" Power mean
#11 ~ What does "PEP" mean?
All of the above question's have very easy simple short answer's.
Have Fun Everyone! 
Lon
Tech808
CEF808
N9OSN |
Bruce
Senior Member
Username: Bruce
Post Number: 2863
Registered: 9-2003
| | Posted on Thursday, June 16, 2005 - 10:15 am: |
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1) X4 or 16 watts
2) If the wind didn't blow tha antenna down its not high enough.
3) 100% neg
4) VSWR is the goes-outa - the goes nowwhere.
5) GOLDEN SCREWDRIVER
6 alignmemt tool ..... or big hammer
7) A staic strap is a resisive strap that drains a charge to ground.
8) To brake the fall of your strap if you drop it.
9)This is the power sent to antenna ( GOES OUTA )
10)This is the power comming back ( GOES NOWHERE )
11) Peak envelope power |
Bc910
Advanced Member
Username: Bc910
Post Number: 535
Registered: 7-2004
| | Posted on Thursday, June 16, 2005 - 1:07 pm: |
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some of mine are guesses...
1 2x the power
2 36 ft
3 100%
4 with an swr meter between the radio and antenna
5 golden screw driver
6 anti static/non conductive
7 a strap or mat that grounds the equipment and the person working on it so no static charge can form
8 when working on electronic equipment
9 forward power is the power being sent out of the antenna
10 reflected power is the power sent back to the radio by the antenna system
11 pep is the peak power of your transmiter
Hopefully I got at least 80%
BC |
Yankee
Advanced Member
Username: Yankee
Post Number: 671
Registered: 7-2003
| | Posted on Thursday, June 16, 2005 - 1:45 pm: |
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 , Lon, I like that and if everyone that has a radio can answer these 11 questions it would be nice. Most people that hold an amateur radio license can or should be able to answer these basic questions. The unforgiving golden screwdriver is the start of many repair bills.
Carl KD5SDM/CEF-357 |
Chad
Intermediate Member
Username: Chad
Post Number: 323
Registered: 11-2004
| | Posted on Thursday, June 16, 2005 - 3:47 pm: |
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1. 40 watts (could be wrong, guessing)
2. 36 feet
3. 100.000000001%
4. At the antenna feed point to check antenna matching, at radio is sufficient thereafter, I prefer to know the SWR of the SYSTEM though.
5. Golden screwdriver
6. ESD tools, including trimmer tuners (swizzle sticks) Sometimes though a non conductive Swizzle is best for inductors, use judgement, esp around tubes!
7. A strap to ground your body usually worn on the wrist, I like the ankle sometimes when needing two unobstructed hands. Mat is an anti static mat to keep a charge from building.
8. All the time, but I unstrap when working with HV. Important for sensitive solid state work.
9. Power going TO the antenna, not necessarily radiated power.
10. Power coming back from the antenna SYSTEM or power not available for radiation.
11. Peak Envelope Power.
Chad
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Chad
Intermediate Member
Username: Chad
Post Number: 324
Registered: 11-2004
| | Posted on Thursday, June 16, 2005 - 5:00 pm: |
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Bwahahaha I meant to say 36 feet but I was arguing with someone at work saying " 3 studs 1-2-3 32 darn inches apart not 36" guess what I wrote? My second answer would be as high as you can legally put it.
Moderator Note!
Corrected it for you.  |
Yankee
Advanced Member
Username: Yankee
Post Number: 672
Registered: 7-2003
| | Posted on Thursday, June 16, 2005 - 6:05 pm: |
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OK OK I'll answer them also.
1: Times 4 or 16 watts to the antenna.
2: Four times quarter wave length, or 36 feet.
3; distortion happens at over 100% modulation.
4: At time of installation for best overall results at the antenna feed point, after that at the output of the last piece of equipement, before going to the antenna.
5: That most loved GOLDEN SCREWDRIVER.
6: Non matalic alignment/tuning sticks.
7: A grounded special strap wore at the wrist or ankle of the technician so there is no chance of static charge while working on electronic equipement.
8: Sort of along the same idea as a static strap, only this is a grounded pad that the equipement being worked on is placed on during service work.
9: The real power that is being delivered to the antenna feed point.
10:The wasted power that is coming back from the antenna, not of any use and going nowhere.
11.Peak envelope power.
After 50 plus years of playing with some kind of radio equipement and also working on them, I best be able to answer these questions.
Carl CEF-357 |
Mikefromms
Advanced Member
Username: Mikefromms
Post Number: 654
Registered: 6-2003
| | Posted on Thursday, June 16, 2005 - 6:07 pm: |
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Well, the only one I think needs clarifying is the measuring the swr for 11 meters. Tune to channel 20 and measure at the antenna feedpoint.
mikefromms |
Allagator
Advanced Member
Username: Allagator
Post Number: 636
Registered: 9-2002
| | Posted on Thursday, June 16, 2005 - 11:20 pm: |
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can i get them in true or false ????
LOL
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Yankee
Advanced Member
Username: Yankee
Post Number: 673
Registered: 7-2003
| | Posted on Friday, June 17, 2005 - 12:20 am: |
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Yes Mike, but swr should also be checked at the lowest and highest frequency that one will be operating on, plus somewhere about mid range of the frequency spread. I worded it this way so as to take it radios that have been moded to operate both below channel one and above channel forty. Useing channel 20 as a center frequency point is fine if the radio is going to be operated from channels 1-40 only, but it's also best to obtain a good swr at channel 1 and channel 40.
Carl CEF-357 |
Jellybean
Member
Username: Jellybean
Post Number: 65
Registered: 1-2002
| | Posted on Friday, June 17, 2005 - 11:44 am: |
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I thought number one, was double the effective power
tx'd.
#8 only really needs to be there when working with static sensitive equipment so there's no damage to the components that are sensitive even to a small charge. Maintaining room humidity is another good way to prevent static charges. |
Brewdirect
Intermediate Member
Username: Brewdirect
Post Number: 115
Registered: 7-2004
| | Posted on Saturday, June 18, 2005 - 5:23 am: |
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#1 ~ 27.4285 watts
#2 ~ 17 feet
#3 ~ 100 %
#4 ~ Check SWR on 1, 20, and 40.
#5 ~ Golden ScrewDriver
#6 ~ Plastic
#7 ~ Mat your stand on..or ground that attaches to you to keep static from your human body from going down your fingers and into a piece of sensitive electronic equipment.
#8 ~ Whenever you are working on sensitive electronics.
#9 ~ Forward power...power going out
#10 ~ Power being reflected..coming back through your system
#11 ~ Peak Envelope Power |
Brewdirect
Intermediate Member
Username: Brewdirect
Post Number: 119
Registered: 7-2004
| | Posted on Monday, June 20, 2005 - 8:15 pm: |
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Do we get to see the answer key? |
Tech808
Moderator
Username: Tech808
Post Number: 6132
Registered: 8-2002
| | Posted on Monday, June 20, 2005 - 10:15 pm: |
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#1 ~ 4 X's
4x4=16 or 1~S-Unit
(If you are throwing 100 watts out for the person on the other end to notice a 1 S-unit difference in your signal you will need to increase in power to 400 watts.)
#2 ~ 36'
#3 ~ 100%
#4 ~ For the 11 Meter/CB Band you check your SWR on Channel #1 / Channel #20 and Channel #40 and adjust your SWR on the Antenna for the Lowest possable reading across the band.
#5 ~ GOLDEN SCREWDRIVER
#6 ~ Any NON-METAL/NON CONDUCTIVE alignment tools/equipment
#7 ~ A static Strap attaches to your wrist to pervent/discharge a static charge from damaging your equipment, a Static Mat is a non-conductive mat that you place the equipment on to prevent a static charge.
#8 ~ ANY TIME that you are working on sensitive radio equipment that can be damaged by a static charge!
#9 ~ FORWARD means Power going from your radio to your Antenna or Dummy Load.
#10 ~ REFLECTED means Power that is Reflected/Returned back to your Radio not going to your Antenna.
#11 ~ PEP (Peak Envelope Power) is the Maximum power your radio is producing.
Lon
Tech808
CEF808
N9OSN |
Bc910
Advanced Member
Username: Bc910
Post Number: 541
Registered: 7-2004
| | Posted on Tuesday, June 21, 2005 - 12:58 am: |
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I think I got a B!!!!
BC |
Strykerz
New member
Username: Strykerz
Post Number: 1
Registered: 6-2005
| | Posted on Tuesday, June 21, 2005 - 7:54 am: |
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Good basic knowledge test there Tech 808!! |
Tech808
Moderator
Username: Tech808
Post Number: 6137
Registered: 8-2002
| | Posted on Tuesday, June 21, 2005 - 8:03 am: |
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Strykerz,
WELCOME TO THE COPPER FORUM!
Lon
Tech808
CEF808
N9OSN |
