Pete KE9OA wrote:

Those sync detectors have been the hardest part of this radio design!
Compared to my current iterations, the Icom R75 sync detector is a gem. This
gives you an idea of just how bad my sync detectors are! I'll get them
running.........they are only a collection of parts!

You're learning why so few receivers have been made with a good sync'
detector.
Keep up the good work.


-----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
-----== Over 100,000 Newsgroups - 19 Different Servers! =-----

Thanks! it has been a learning experience!

Pete

starman wrote in message
...
Pete KE9OA wrote:

Those sync detectors have been the hardest part of this radio design!
Compared to my current iterations, the Icom R75 sync detector is a gem.
This
gives you an idea of just how bad my sync detectors are! I'll get them
running.........they are only a collection of parts!

You're learning why so few receivers have been made with a good sync'
detector.
Keep up the good work.


-----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
-----== Over 100,000 Newsgroups - 19 Different Servers! =-----

I haven't heard from you, so I will assume that you did receive the info.

Pete

starman wrote in message
...
Pete KE9OA wrote:

Those sync detectors have been the hardest part of this radio design!
Compared to my current iterations, the Icom R75 sync detector is a gem.
This
gives you an idea of just how bad my sync detectors are! I'll get them
running.........they are only a collection of parts!

You're learning why so few receivers have been made with a good sync'
detector.
Keep up the good work.


-----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
-----== Over 100,000 Newsgroups - 19 Different Servers! =-----

Pete KE9OA wrote:

I haven't heard from you, so I will assume that you did receive the info.

Pete

I got them Pete. Thanks a lot. I haven't studied the schematic too much
but I was wondering what changes (if any) would be needed to use the
sync' detector with a 50-Khz I.F.?


-----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
-----== Over 100,000 Newsgroups - 19 Different Servers! =-----

I am glad that you received the data.............anyway, this chip is
specified as going down to 400kHz. I know that the phase detector requires a
higher drive level as you go lower in frequency. As an example, it requires
800mV p-p at 455kHz. I am not sure how much it would need at 50kHz, or it it
would even work. You would need to replace the 455kHz ceramic filters with
some sort of 50kHz filter if you wanted to keep the noise floor low, at the
very least.

Pete

starman wrote in message
...
Pete KE9OA wrote:

I haven't heard from you, so I will assume that you did receive the
info.

Pete

I got them Pete. Thanks a lot. I haven't studied the schematic too much
but I was wondering what changes (if any) would be needed to use the
sync' detector with a 50-Khz I.F.?


-----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
-----== Over 100,000 Newsgroups - 19 Different Servers! =-----