• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar
Part15

Part15

License Free, legal, low-power radio broadcasting

  • About Us
  • Forums
  • Resources
  • Members
  • Contact Us
  • Log In
Forums
Main Category
temp
Why -3 dB is not ba...
 
Notifications
Clear all

Why -3 dB is not bad...

 
temp
Last Post by Anonymous 10 years ago
8 Posts
2 Users
0 Reactions
636 Views
RSS
 wdcx
(@wdcx)
Posts: 444
Noble Member
Topic starter
 

http://tinyurl.com/zuhbe2f


 
Posted : 15/08/2016 8:32 am
 Anonymous
(@Anonymous)
Posts: 0
 

I ran across that same bit of information earlier this morning and found it informative.

I had an antenna that had no gain at all, except when two or more of them were stacked. It happened to be a horizontal/vertical antenna, so, based on the above link, maybe my antenna did have gain after all.


 
Posted : 15/08/2016 8:48 am
 Anonymous
(@Anonymous)
Posts: 0
 

"... maybe my antenna did have gain after all."

Gain with respect to what reference?


 
Posted : 15/08/2016 2:53 pm
 Anonymous
(@Anonymous)
Posts: 0
 

Rich: "Gain with respect to what reference?"

I'm thinking back.

I do remember that I had a reference but am having trouble reassembling the experience...

My big problem here is memory. My guess might not be what really happened, so I'll say some words and hope to come close.

It was a part 15 certified transmitter, possibly a C.Crame FM first with it's own antenna fully extended... let's guess... vertically.

3-meters away was the spectrum analyzer and I made a note of the reading.

Then I minimized the telescopic antenna, ran a clip lead 2-inches to the center point of an L-shaped wire taped to the wall right at the elbow... what I call a "Mid-Fed L".

The reading at the analyzer was the same as the previous reading, which is my basis for saying "no gain".

That's as good as I can do in reconstructing what happened.


 
Posted : 15/08/2016 3:25 pm
 Anonymous
(@Anonymous)
Posts: 0
 

... That's as good as I can do in reconstructing what happened.

Thanks, but do you suggest that your recollections actually prove your point(s) to those who read them?


 
Posted : 15/08/2016 4:25 pm
 Anonymous
(@Anonymous)
Posts: 0
 

Upon retrieving more of my antenna experiment memories from The Cloud I have restored more of it.

My testing went on around the same time as Tim's F.I.M. measurements of FM transmitters, which puts it in the summer of 2015. I posted liberally alongside Tim's frequent reports, therefore for anyone seeking details of results and discoveries it's only a few scrolls away.

Crossing Paths -- Right after writing the previous I find a new question from upriver where Rich resides: "...but do you suggest that your recollections actually prove your point(s) to those who read them?"

Carl's reply: Ask them.


 
Posted : 15/08/2016 4:28 pm
 Anonymous
(@Anonymous)
Posts: 0
 

Right after writing the previous I find a new question from upriver where Rich resides: "...but do you suggest that your recollections actually prove your point(s) to those who read them?"

Carl's reply: Ask them.

___________

I asked you.

Wouldn't you serve yourself better to the readers here to answer that question as it applied to you?

 


 
Posted : 15/08/2016 4:47 pm
 Anonymous
(@Anonymous)
Posts: 0
 

Why I was right apriori...

Rich asked whether THEY (the readers) could derive "proof" from whatever I said.

Directing Rich to "Ask them" couldn't have been more appropriate.

His saying "I asked you" risks short circuiting the conversation, in that my response fully honored Rich's having asked me.


 
Posted : 15/08/2016 5:36 pm
Forum Jump:
  Previous Topic
Next Topic  
Share:
Forum Information
Recent Posts
Unread Posts
Tags
  • 13 Forums
  • 7,613 Topics
  • 62.8 K Posts
  • 14 Online
  • 2,243 Members
Our newest member: RaphaelKal
Latest Post: Jelly Roll Blues
Forum Icons: Forum contains no unread posts Forum contains unread posts
Topic Icons: Not Replied Replied Active Hot Sticky Unapproved Solved Private Closed

Primary Sidebar

Online Members

 No online members at the moment

Recent Posts

  • RichPowers

    RE: Public Domain Radio

    Sounds good.

    By RichPowers , 5 months ago

  • ArtisanRadio

    RE: Public Domain Radio

    I'd also like at some point to do a show, hosted by mys...

    By ArtisanRadio , 5 months ago

  • ArtisanRadio

    RE: Public Domain Radio

    When I played music that was not in the public domain, ...

    By ArtisanRadio , 5 months ago

  • RichPowers

    RE: Public Domain Radio

    The core concept of Part 15 AM has always been to provi...

    By RichPowers , 5 months ago

  • RichPowers

    RE: Public Domain Radio

    √1 - I guess there's not, but the potential exist, so f...

    By RichPowers , 5 months ago

Recent Topics

  • RichPowers

    Innovative "Syth-a-Sette" Turns Objects Into Music

    By RichPowers 5 months ago

  • Mark

    Neil Sedaka dies.

    By Mark 5 months ago

  • RichPowers

    Elvis AI?

    By RichPowers 5 months ago

  • RichPowers

    CB RADIO: Illinois CBer cited for 'broadcasting' on Channel 19

    By RichPowers 5 months ago

  • RichPowers

    Stamped pits vs organic dyes: CDs vs CD-R

    By RichPowers 5 months ago

Topic Tags

  • Carl Blare3
  • KDX RADIO3
  • WINDOZE3
  • Transmitter2
  • Radio Phvern2
  • station upgrade2
  • archive.org2
  • playlist2
  • Zara Radio2
  • Carrier Current1
View all tags (74)

Copyright © 2026 · Part15.org · Log in

‹›×

    ‹›×