Philco Model 077 (?) Signal Generator
Posts: 751
Threads: 91
Joined: Nov 2015
City: Jonesboro
State, Province, Country: AR
I posted about this in the July Finds thread. I picked up a Philco Signal Generator. I believe it is a modified Model 077. Does anyone know where I might find any info about it, specifically, a schematic, and maybe a manual?
Any help would be greatly appreciated. Initial inspection coming up.
[Image: https://farm5.staticflickr.com/4216/3574...9eb2_b.jpg]
Blessings,
Jeff W.
Jonesboro, Arkansas
http://jeffsradios.weebly.com
God loves you as you are, not as you should be, because none of us are as we should be. - Brennan Manning
Posts: 751
Threads: 91
Joined: Nov 2015
City: Jonesboro
State, Province, Country: AR
Here's pics from my initial inspection. The 3 tubes all checked out good. It looks like the cord has been replaced, and some components located near the cord entry have been removed (based on another copy of this model Bob Anderson posted about) . Some wax/tar has leaked out of the transformer, but I'm not getting any shorts. I have replacement caps on hand to replace the older ones. Any further info or tips anyone can provide would be helpful and appreciated.
[Image: https://farm5.staticflickr.com/4023/3578...ee03_z.jpg]
[Image: https://farm5.staticflickr.com/4232/3497...bc43_z.jpg]
[Image: https://farm5.staticflickr.com/4136/3561...99df_b.jpg]
Blessings,
Jeff W.
Jonesboro, Arkansas
http://jeffsradios.weebly.com
God loves you as you are, not as you should be, because none of us are as we should be. - Brennan Manning
Posts: 1,475
Threads: 69
Joined: Nov 2012
City: Kansas city, MO.
Posts: 751
Threads: 91
Joined: Nov 2015
City: Jonesboro
State, Province, Country: AR
(07-25-2016, 09:11 PM)KCMike Wrote: http://www.myvintagetv.com/Apple%20PDF%2...ervice.pdf
Just in case you didn't find one yet.
KCMike, Thanks! This will be a big help. I just wish there was a numbered parts list included in this.
Blessings,
Jeff W.
Jonesboro, Arkansas
http://jeffsradios.weebly.com
God loves you as you are, not as you should be, because none of us are as we should be. - Brennan Manning
Posts: 1,475
Threads: 69
Joined: Nov 2012
City: Kansas city, MO.
I looked around for a parts list and could not find one. Looks like the resistors and capacitor values are listed on the schematic.
Banderson has a youtube video of that model if you haven't seen it.
https://www.youtube.com/watch?v=hVIISxdS7qc
Posts: 751
Threads: 91
Joined: Nov 2015
City: Jonesboro
State, Province, Country: AR
(07-26-2016, 09:58 AM)KCMike Wrote: I looked around for a parts list and could not find one. Looks like the resistors and capacitor values are listed on the schematic.
Banderson has a youtube video of that model if you haven't seen it.
https://www.youtube.com/watch?v=hVIISxdS7qc
Thanks again! I'll check it out later today.
Blessings,
Jeff W.
Jonesboro, Arkansas
http://jeffsradios.weebly.com
God loves you as you are, not as you should be, because none of us are as we should be. - Brennan Manning
Posts: 87
Threads: 19
Joined: Dec 2019
City: Rock Hall
State, Province, Country: MD
Hi, I just got myself one and Im ready it see work.
Have you gotten yours working and can I get some help on mine? I have no leads and don't know what the connector pin size is or suppose to look like.
I have a parts list.
(This post was last modified: 01-21-2020, 09:13 PM by truePhilco.)
Posts: 751
Threads: 91
Joined: Nov 2015
City: Jonesboro
State, Province, Country: AR
It's on the back burner. I have too many projects right now. Sorry. Best to start a new thread and ask for help.
Good Luck.
Blessings,
Jeff W.
Jonesboro, Arkansas
http://jeffsradios.weebly.com
God loves you as you are, not as you should be, because none of us are as we should be. - Brennan Manning
Posts: 301
Threads: 31
Joined: Dec 2019
City: Elkhart
State, Province, Country: Indiana
I'm currently working on a Philco 116B and the alignment instructions from the Riders manual for the Philco 116B says to use a Philco 088 Signal Generator which from what I've seen so far is a battery Operated Single Tube version of the 077 Signal Generator discussed here in this thread.
And the Alignment instructions for Aligning the IF section of the 116B says to just hook the signal generator directly to the grid cap of the 77 1st Detector tube and the chassis ground (antenna ground lead) and it doesn't mention using a capacitor inline with the antenna (positive) lead of the signal generator instructions.
But the Signal Generator I have though is a Heathkit SG-8 Signal Generator, which is an AC Operated Signal Generator, should I with my SG-8 attach a capacitor inline with the Antenna (Positive) lead of the signal generator since this is an AC operated unit rather than a Battery operated unit like the Philco 088 Signal Generator, and if so would the reason why they didn't suggest the use of a capacitor inline with the Antenna (positive) lead of the Philco 088 Signal Generator was because it was a battery operated unit?
Thanks for your help with this subject.
Levi
Users browsing this thread: 1 Guest(s)
|
Recent Posts
|
Shadow Meter Bulb
|
Mike is correct on the bulb connection, two separate circuits. I found that by rotating the bulb and sliding it forward ...RodB — 12:19 PM |
Hickok AC51 tube tester
|
Cleaned ann contacts, switches and sockets, works great now.martinj — 11:32 AM |
Philco 42-1008 conversion kit
|
I read about a kit to convert the variable speed changer in the Philco 42-1008 into a single speed unit. That would rem...alangard — 09:30 PM |
HiFi (Chifi) tube amp build - but my own design.
|
Tim
Well...a chassis is metal. Magnetic or not, it does not matter.
A transformer has some hum to it. It is natural. Th...morzh — 08:40 PM |
Hickok AC51 tube tester
|
I thought the 83 tube was bad because it looked white but it tests strong. Blue gassy though. I checked the fuse, it was...martinj — 08:37 PM |
Shadow Meter Bulb
|
Ross
I am not sure what current limiting effect the incandescent provides.
They are two different parts of the sch...morzh — 08:31 PM |
12' Philco
|
Bob
Thanks for that photo.
I have been looking for it, and I cannot find anythinmg on the web.
I forgot it was here...morzh — 08:29 PM |
Shadow Meter Bulb
|
I think after all has been said, I will use the same bulb that is specified for the dial pilot light which is a #55.
I ...georgetownjohn — 07:31 PM |
12' Philco
|
There was also this Philco!
klondike98 — 07:25 PM |
HiFi (Chifi) tube amp build - but my own design.
|
I expected a challenge and this is just part of it. But, it's also supposed to be fun, entertaining, informative and enj...TV MAN — 07:12 PM |
Who's Online
|
There are currently 6079 online users. [Complete List] » 4 Member(s) | 6075 Guest(s)
|
|
|
|