Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Knight 600A tester
#16

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.
#17

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
#18

The venerable Hickoks are also a good bet.
#19

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.
#20

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 .
#21

cantonkid

http://www.electronixandmore.com/misc/index.php?item=26


http://bama.edebris.com/manuals/knight/600tube/


https://www.youtube.com/watch?v=9j3gGb2Uoto


sam

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
#22

thanks Sam
#23

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
#24

(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: 1 Guest(s)
[-]
Recent Posts
Philco 91 Speaker Replacement
The spider is glued on the cone and so is the voice coil. I think you can use a cotton swab dipped in acetone and carefu...RodB — 02:42 PM
Restoring Philco 37-604C
Yes I saw that. If I knew, I'd probably try to arrange for getting it myself. But I have just got one. Which does not m...morzh — 01:44 PM
Philco 38-2 Automatic Tuning
When you push the lever, you are supposed to rotate the disk to the desired station. Then the magnetic tuning will acqu...morzh — 01:42 PM
Philco 38-2 Automatic Tuning
I figure out the muting from another picture that helped. Now I need to know how the automatic tuning works. When I push...dconant — 12:11 PM
Philco 91 Speaker Replacement
How would I go about removing the spider from the cone?dconant — 12:04 PM
Philco 38-2 Automatic Tuning
Hello, I am having trouble getting my automatic tuning to stay unmuted. If I play with the tuning handle I can get it to...dconant — 10:51 AM
Does anyone make photofinish replacements?
Here’s the link to the DIY photofinish section of our site: klondike98 — 09:46 AM
Delco car radio Peko vibrator converstion issues
Hi Richard, Thx for posting the schematic.  As I remember as a kid, these were great performers for the time, likely...MrFixr55 — 08:56 AM
Delco car radio Peko vibrator converstion issues
hello mr Fixr, The Electro  Powersupply that I am powering the radio with has a huge choke plus a 10,000ufd electrolyti...radiorich — 10:58 PM
Delco car radio Peko vibrator converstion issues
How about putting a choke in the power supply? The big cap was likely an attempt to stabilize the DC. Kids who cre...MrFixr55 — 09:19 PM

[-]
Who's Online
There are currently no members online.

>