Posts: 228
Threads: 64
Joined: Dec 2013
City: Northbrook, IL
I think not only rectifier, but the whole tester is a big fat ersatz. Yet, I noticed that all big guys use TV-7, whatever brand it is, I 've bought some tubes with a sellers' stated good measurement on them and they all work fine, power tubes and otherwise. I also went through schematics of the mutual conductance testers, they have much more sophisticated layout, vacuum tubes, etc,whereas mine is as simple as they get.
Posts: 599
Threads: 24
Joined: Jan 2014
City: Edmonton AB CA
Without a doubt the TV-7 is a much better tester than your present tester but at a much higher cost. Be carefully buying one because they, just like yours, need to be properly restored and calibrated to provide the expected results.
Gregb
Posts: 2,128
Threads: 18
Joined: Oct 2008
City: Merrick, Long Island, NY
The venerable Hickoks are also a good bet.
Posts: 15,444
Threads: 539
Joined: Oct 2011
City: Jackson, NJ
And hickok as a TV-7, only it measures not in uMhos but in its own units, which can be dealt with, just not as convenient.
Posts: 5
Threads: 1
Joined: Feb 2017
City: Rosemary, Alberta, canada
i have a Knight also and believe it's a 600 as there's no model number on it . i am told it works but i haven't tried it yet as i can't find a proper manual,calibration set up and tube lists . the ones i have come across aren't very good , like to find someone with a original manual and calibration,tube lists . the would send me a copy .
Posts: 2,570
Threads: 336
Joined: Jun 2013
City: lawrenceville nj
Some day, and that day may never come, I will call upon you to do a service for me. But until that day, accept this justice as a gift
mafiamen2
Posts: 5
Threads: 1
Joined: Feb 2017
City: Rosemary, Alberta, canada
Posts: 5
Threads: 1
Joined: Feb 2017
City: Rosemary, Alberta, canada
ok i got the manual, the parts list is blurry and hard to see , i want to replace all the resistors caps before i go any farther
anyone have a original copy that they can scan the parts list for me , it would really help me
thanks in advance
Posts: 3,122
Threads: 57
Joined: Apr 2011
City: Lexington, KY
(02-09-2017, 04:33 PM)cantonkid Wrote: ok i got the manual, the parts list is blurry and hard to see , i want to replace all the resistors caps before i go any farther
anyone have a original copy that they can scan the parts list for me , it would really help me
thanks in advance
C-1 Capacitor, paper, .1 MFD, 400V
R-1 Resistor, l00K ohms, l/2 watt
R-2 Resistor, 270K ohms, 1/2 watt
R-3 Resistor, 51 ohms, 1/2 watt, 5%
R-4 Potentiometer, 200 ohms, wirewound, 2 watt .
R-5 Resistor, 470 ohms,1/2 watt,± 5%
R-6 Resistor, 1500 ohms, 1/2 watt, 5% ..
R-7 Resistor, wirewound, 2500 ohms, 7 watt
R-8 Resistor, 5100 ohm, 1/2 watt, 5%
R-9 Resistor, 1000 ohms, 1/2 watt, 5%
R-10 Control, calibration; 1200 ohms
R-11 Resistor, 68K ohms, 1/2 watt
R-12 Control, line adjust; 175 ohms, 25 watt
John KK4ZLF
Lexington, KY
"illegitimis non carborundum"
Users browsing this thread:
|
Recent Posts
|
Cannot Adjust an IF Transformer’s cores
|
Outstanding work indeed. I wish I could come up with solutions like this.slford310 — 11:16 PM |
Cannot Adjust an IF Transformer’s cores
|
The abilities of our 'Phorum Pholks" never ceases to amaze me! Fantastic fabrication, Joseph! I'm waiting now for...GarySP — 08:27 PM |
PT-6 antenna connections
|
Thanks. I never realized that was a notch noted in the schematic as described. I’ll recheck my wiring.bridkarl — 08:13 PM |
Cannot Adjust an IF Transformer’s cores
|
Thank you! I was quite new to the Phorum when I started this post, so I feel like it might be advantageous to publish a ...jrblasde — 08:07 PM |
PT-6 antenna connections
|
Notice in the schematic the notch at the bottom of the antenna coil is between pins 3 & 4.
Yes, pin 6 of the 7C6 is...RodB — 07:34 PM |
bridkarl
|
I have two PT-6 chassis. On both there is a blue wire that runs from the above chassis transformer to pin 6 of 7C6. So t...bridkarl — 07:23 PM |
Cannot Adjust an IF Transformer’s cores
|
Joseph, now you are an engineer!!RodB — 06:37 PM |
PT-6 antenna connections
|
Hi, reading your explanation I can see the confusion. If you take it one connection at a time it should result in a desi...RodB — 06:34 PM |
Cannot Adjust an IF Transformer’s cores
|
It works! I received the PCBs this morning in the mail, and put everything together. I reused the base from the original...jrblasde — 04:32 PM |
PT-6 antenna connections
|
I seem to have lost my way on this PT-6.
I see the antenna aerial transformer schematic - I’m reading pins 1 through ...bridkarl — 12:30 PM |
Who's Online
|
There are currently no members online. |
|
![>](https://philcoradio.com/phorum/images/bootbb/asb/right_arrow.png)
|