RF but no IF on 610

Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

Thread Closed

Thread Rating:

0 Vote(s) - 0 Average
1
2
3
4
5

Linear Mode

RF but no IF on 610

Chas
Senior Member

Posts: 714
Threads: 9
Joined: Apr 2018
City: S. Dartmouth State, Province, Country: MA

#17

04-02-2021, 05:22 PM

The injected IF frequency has to be modulated by an AF tone, can be 440hz or 1khz usually. The level of modulation should be 30%, just enough to identify the RF as a unique tone.

That "box" on the far left of the control panel, push "on" push choices of "AM" choose 1K or 400hz, press levels of arrow up or down look on screen for confirmation. Fancy generator, all my stuff is 50's & 60's tubes...

Once you get it going keep RF output very low so AVC does not actuate, then do the alignment...

Chas

Pliny the younger
“nihil novum nihil varium nihil quod non semel spectasse sufficiat”

Find

« Next Oldest | Next Newest »

Thread Closed

Messages In This Thread

RF but no IF on 610 - by Patrick - 04-02-2021, 10:20 AM

RE: RF but no IF on 610 - by Radioroslyn - 04-02-2021, 12:00 PM

RE: RF but no IF on 610 - by Patrick - 04-02-2021, 12:06 PM

RE: RF but no IF on 610 - by Radioroslyn - 04-02-2021, 12:07 PM

RE: RF but no IF on 610 - by Patrick - 04-02-2021, 12:10 PM

RE: RF but no IF on 610 - by Radioroslyn - 04-02-2021, 12:23 PM

RE: RF but no IF on 610 - by Patrick - 04-02-2021, 12:28 PM

RE: RF but no IF on 610 - by Radioroslyn - 04-02-2021, 12:38 PM

RE: RF but no IF on 610 - by Patrick - 04-02-2021, 01:17 PM

RE: RF but no IF on 610 - by morzh - 04-02-2021, 01:54 PM

RE: RF but no IF on 610 - by Patrick - 04-02-2021, 02:38 PM

RE: RF but no IF on 610 - by morzh - 04-02-2021, 02:42 PM

RE: RF but no IF on 610 - by Patrick - 04-02-2021, 02:58 PM

RE: RF but no IF on 610 - by morzh - 04-02-2021, 03:21 PM

RE: RF but no IF on 610 - by morzh - 04-02-2021, 03:31 PM

RE: RF but no IF on 610 - by Patrick - 04-02-2021, 04:23 PM

RE: RF but no IF on 610 - by Chas - 04-02-2021, 05:22 PM

RE: RF but no IF on 610 - by morzh - 04-02-2021, 07:15 PM

RE: RF but no IF on 610 - by Chas - 04-02-2021, 08:21 PM

RE: RF but no IF on 610 - by morzh - 04-02-2021, 08:24 PM

RE: RF but no IF on 610 - by Steve Davis - 04-02-2021, 08:47 PM

RE: RF but no IF on 610 - by morzh - 04-02-2021, 08:54 PM

RE: RF but no IF on 610 - by John Bartley - 04-02-2021, 09:17 PM

RE: RF but no IF on 610 - by Chas - 04-02-2021, 09:57 PM

RE: RF but no IF on 610 - by morzh - 04-02-2021, 10:04 PM

RE: RF but no IF on 610 - by mikethedruid - 04-02-2021, 10:07 PM

RE: RF but no IF on 610 - by Patrick - 04-02-2021, 10:14 PM

RE: RF but no IF on 610 - by morzh - 04-02-2021, 10:19 PM

RE: RF but no IF on 610 - by BrendaAnnD - 04-03-2021, 03:54 AM

RE: RF but no IF on 610 - by Patrick - 04-03-2021, 06:26 AM

RE: RF but no IF on 610 - by Paul Philco322 - 04-03-2021, 07:44 AM

RE: RF but no IF on 610 - by Patrick - 04-03-2021, 08:07 AM

RE: RF but no IF on 610 - by morzh - 04-03-2021, 10:29 AM

RE: RF but no IF on 610 - by morzh - 04-03-2021, 10:33 AM

RE: RF but no IF on 610 - by Patrick - 04-03-2021, 11:38 AM

RE: RF but no IF on 610 - by morzh - 04-03-2021, 01:02 PM

RE: RF but no IF on 610 - by Patrick - 04-03-2021, 02:58 PM

RE: RF but no IF on 610 - by mikethedruid - 04-03-2021, 05:03 PM

RE: RF but no IF on 610 - by morzh - 04-03-2021, 05:36 PM

View a Printable Version

Users browsing this thread: 1 Guest(s)

Recent Posts
The list of my radio & TV collection!
A little light Saturday positive about our hobby in our feed... My new every Saturday video about antique radio equipme...RadioSvit — 02:12 PM
Model 70 Cabinet Trim
musar , Well if you have any more questions feel free to post away . Sincerely Richardradiorich — 08:56 PM
Model 70 Cabinet Trim
Although I have not made any cabinets or cabinet parts for a couple of years, I still have some parts left over, includi...Steve Davis — 06:26 PM
philcorepairbench.com - shadow-meter
Thanks Ron. But I can't find those articles.fenbach — 02:43 PM
Model 70 Cabinet Trim
Thank you, Gary. Before making my original post, I had clicked on "Steve Davis Cabinets" only to find that it...musar — 02:25 PM
philco predicta
Welcome to the Phorum, cgl18! I am not your resource for television repair, but lots of friendly help is available here...GarySP — 02:12 PM
Model 70 Cabinet Trim
Welcome to the Phorum, musar! You can send Steve Davis a private message (PM). The site is at the top of the Home page...GarySP — 02:09 PM
Model 70 Cabinet Trim
How do I contact him? The only contact information for him I could find when searching online was a telephone number th...musar — 10:38 AM
philco predicta
Hello, good afternoon, I would like to ask what the possible problem could be if I don't have an image on the screen. I ...cgl18 — 10:19 AM
Philco model 38 code 121 not receiving signal.
So one last question before I finish this radio. Regarding the speaker and output transformer. I salvaged the original o...Stormlord5500 — 09:31 AM

Who's Online

There are currently 883 online users. [Complete List]
» 3 Member(s) | 880 Guest(s)

Login
Username:
Password:	Lost Password?
	Remember me