reciver

[ma330]

hello
Please help a 50-ohm antenna.
And give your opinion about this recivers.Which is more efficient?

[WM6]

He messy64, please stop pollute this forum with new and new nick-name desperate spamming for help.

Answer: it depend on how you build your antenna.
First one is suitable in first line for stationary antenna, second one for portable.

[Seden]

It is good to see someone building a receiver that doesn't use a comparator connected to a signal generator. Alot happens between a 1 and the 0 that these guy's aren't considering so you are smart in using this design. One thing that would make it more sensitive is to add a Local Oscillator and a mixer in the front end like a CW receiver or SSB.

R.S.S.

[Fred]

Originally Posted by Seden

It is good to see someone building a receiver that doesn't use a comparator connected to a signal generator. Alot happens between a 1 and the 0 that these guy's aren't considering so you are smart in using this design. One thing that would make it more sensitive is to add a Local Oscillator and a mixer in the front end like a CW receiver or SSB.

R.S.S.

Don´t you think this will give very similar results ?

[Seden]

Fred,

As someone who has compared various receivers for weak signal detection, adding an LO+mixer (product detector) greatly enhances weak carriers over an A.M. detection scheme.

Get a copy of a book called: Communication Receivers By Ulrich Rhode or another one I like is: Single Sideband System and Circuits by William Sabin.

Randy Seden-WD6ELU
Licensed since 1970

[ma330]

Originally Posted by WM6

He messy64, please stop pollute this forum with new and new nick-name desperate spamming for help.

Who mesy64?
I read your posts on other threads for mesy64.I do not know who is and who is registered with a different user name.I am sorry for you that you judge.carl knows me.I was a member of the 2006 geotech forum.Even before you join in this forum.ut I had problems two years ago did not come to this forum.Today, long after I came back to this forum. And even a problem for me was the time for solved by carl.Mesy64 do not know if you or anyone else who has created a disturbance of the administrator, ask him to block IP.tank you for answer and I'm sorry for you. Please edit your posts

[WM6]

Hi ma330,

no problem, we all love messy64.

[ma330]

Originally Posted by WM6

Hi ma330,

no problem, we all love messy64.

tank you
Please edit your post 2

[WM6]

Originally Posted by ma330

tank you
Please edit your post 2

Done. As you can see post #2 was addressed to messy64 not to you.

So you can use rest of those message only, if you find something usable of course.