Call Search
     

New to Ham Radio?
My Profile

Community
Articles
Forums
News
Reviews
Friends Remembered
Strays
Survey Question

Operating
Contesting
DX Cluster Spots
Propagation

Resources
Calendar
Classifieds
Ham Exams
Ham Links
List Archives
News Articles
Product Reviews
QSL Managers

Site Info
eHam Help (FAQ)
Support the site
The eHam Team
Advertising Info
Vision Statement
About eHam.net

donate to eham
   Home   Help Search  
Pages: [1] 2 3 4 5 6 ... 12 Next   Go Down
  Print  
Author Topic: • Favorite Old Wives' Tales •  (Read 63199 times)
AG6K
Member

Posts: 1




Ignore
« on: October 26, 2011, 05:16:36 PM »

1.  A half-wave dipole radiates mostly from where the RF current is max. 
2.  12" wide Cu strap has virtually zero L.
3.  Directly grounding grid pins with wide Cu strap completely eliminates VHF oscillations.
4.  In order to suppress VHF parasitics a VHF suppressor has to "look right". 
5.  A 40% increase in P out is definitely a big advantage on HF.
6.  A HV fuse and a grid fuse will protect 8877s, 3cx800A7s,8939s. and similar tubes from gold evaporating from the grid during an "oscillation condition". 
7.  You still have to hear 'em to work 'em. 
8.  Some transmitting tubes simply  do not have enough feedback-C to sustain oscillation. 
9.  One can obtain non-inductive resistors on this planet.
10.  Receiving 160m DX signals requires a full-wave water well casing ground.
11.  When not enough space is available, 1/4 wave 160m meter radials can be coiled and laid on the ground under a bush.
12.  VHF parasitic oscillations will never take place with a recognized expert's amplifier layout.
13.  The FWB rectifier is better than a FWD rectifier.
Rich, AG6K
Logged
N0NZG
Member

Posts: 127




Ignore
« Reply #1 on: November 10, 2011, 07:51:20 PM »

I get no tales from the old wife only QRM and QSB


*** Dummy loads don’t radiate.  I have had more than a few qso’s when testing a rig on a cantenna. ****


The best old wives tale, she said  “Sure  we can go to Dayton this year honey, we can see my mother anytime. ”
« Last Edit: November 10, 2011, 07:56:12 PM by N0NZG » Logged
AG6K
Member

Posts: 1




Ignore
« Reply #2 on: November 11, 2011, 07:19:39 AM »

I get no tales from the old wife only QRM and QSB

 Chortle.  How about QRN?

Quote
*** Dummy loads don’t radiate.  I have had more than a few qso’s when testing a rig on a cantenna. ****

 The radiation is from what comes before the dummy load.

Quote
The best old wives tale, she said  “Sure  we can go to Dayton this year honey, we can see my mother anytime. ”

good one Jeremy.
cheers
Rich, ag6k
Logged
AF6LJ
Member

Posts: 582




Ignore
« Reply #3 on: November 11, 2011, 07:20:23 AM »

While I might be an old woman, I'm not an old wife. I did the smart thing and never married so my life has always been my own instead of Mrs. someone or so & so's XYL......
Logged

Take Care
Sue,
AF6LJ

Don't Kalifornicate My Life
KH6AQ
Member

Posts: 7894




Ignore
« Reply #4 on: November 11, 2011, 07:29:40 AM »

12 out of 13 ain't bad. You got #1 wrong.
Logged
W1BR
Member

Posts: 4189




Ignore
« Reply #5 on: November 11, 2011, 08:19:25 AM »

12 out of 13 ain't bad. You got #1 wrong.

I'm stuck on number 7.  Guess I'm old.
 Grin Grin
Pete
Logged
BOOTYMONSTER
Member

Posts: 95




Ignore
« Reply #6 on: November 11, 2011, 10:32:01 AM »

i became fascinated with the BS that's passed around as CB fact a while back and started a thread about it on another forum . i love the chicken band , but their is a lot a lot of crap to wade through when looking for real answers sometimes . LOL

http://www.worldwidedx.com/general-cb-services-discussion/36229-your-favorite-citizens-band-radio-myth-lies-legends.html
Logged
AD6KA
Member

Posts: 2243




Ignore
« Reply #7 on: November 11, 2011, 10:52:57 AM »

"Antennas perform better when put up in crappy weather"  Tongue
Logged
W1BR
Member

Posts: 4189




Ignore
« Reply #8 on: November 11, 2011, 12:11:09 PM »

Best I saw was a letter to a magazine column I was hosting showing how a reader made a "Ground" for his CB using
a bucket of salt water with the rig ground connected to the metal bucket. Needless to say we didin't run it.

Pete
Logged
AD6KA
Member

Posts: 2243




Ignore
« Reply #9 on: November 11, 2011, 03:19:57 PM »

Best I saw was a letter to a magazine column I was hosting showing
how a reader made a "Ground" for his CB using a bucket of salt water
with the rig ground connected to the metal bucket. Pete

Tsk, tsk, tsk. What a shame.

Everyone knows the ground wire has to be suspended
in the salt water
for this to work properly, not
just clipped to the bucket!
   Grin

Ken, AD6KA
Logged
AG6K
Member

Posts: 1




Ignore
« Reply #10 on: November 11, 2011, 03:29:13 PM »

12 out of 13 ain't bad. You got #1 wrong.

"Faced with the choice between changing one's mind and proving that there is no need to do so, almost everyone gets busy on the proof. "
    - John Kenneth Galbraith -

Rich, ag6k
Logged
AG6K
Member

Posts: 1




Ignore
« Reply #11 on: November 12, 2011, 02:37:37 AM »

Best I saw was a letter to a magazine column I was hosting showing how a reader made a "Ground" for his CB using
a bucket of salt water with the rig ground connected to the metal bucket. Needless to say we didn't run it.

Pete

  chortle.  Good one Pete.  With a dielectric constant of 79, distilled water works as well as an HF ground as does salt-water.
Rich, ag6k
Logged
W1BR
Member

Posts: 4189




Ignore
« Reply #12 on: November 12, 2011, 06:25:25 AM »

A having the electrolyte inside the bucket certainly didn't improve conductivity to earth, or the carpet, or whatever
he sat the bucket on!

Rich, I'm curious about your statement regarding if you can't hear them you can't work them... can you
elaborate a bit?

Pete
Logged
AG6K
Member

Posts: 1




Ignore
« Reply #13 on: November 12, 2011, 08:32:45 AM »

A having the electrolyte inside the bucket certainly didn't improve conductivity to earth, or the carpet, or whatever
he sat the bucket on!

Rich, I'm curious about your statement regarding if you can't hear them you can't work them... can you
elaborate a bit?

Pete

  For at least 3 decades there have been computer controlled Rx sites where one can listen locally from many thousands of miles away.  This arrangement allows CA Hams to hear otherwise unhearable barefoot signals from Europe.  Guys in Europe have little problem hearing tetrode with handle signals from the West Coast.  Such Rx sites existed even before the Internet.
Rich, ag6k

Logged
W5JON
Member

Posts: 373




Ignore
« Reply #14 on: November 12, 2011, 10:55:30 AM »

"7.  You still have to hear 'em to work 'em." 

Often on "JT65' this is not the case.

73,

John
Logged
Pages: [1] 2 3 4 5 6 ... 12 Next   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.11 | SMF © 2006-2009, Simple Machines LLC Valid XHTML 1.0! Valid CSS!