Check the link I posted. They've got a picture of the actual Yaesu tuning procedure.
Yaesu: Yaesu ft101e
- Thread starter SPRINTERLIGHT29
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K4EET
Chaplain
Gerald,
At the top of Page 2. Steps 25 to 50. I simply edited the picture to include the extra steps.
73, Dave K4EET
K4EET
Chaplain
Mike, I think Gerald has tried those but could not quite figure out everything. In any event, he should be good to go now with both instructions. 73, Dave K4EET
K4EET
Chaplain
K4EET
Chaplain
Full Set of Instructions (50 steps)
1. Set POWER and HEATER to OFF (down).
2. Set MOX/PTT/VOX to PTT (middle).
3. Set PROCESS(or), NB (Noise Blanker), and RF ATT (Attenuator) to OFF.
4. Set 25KHz/100KHz (Calibrator) to OFF (middle).
5. Set MODE to LSB (full counter-clockwise).
6. Set AF GAIN (center knob) to minimum (full counter-clockwise at 0).
7. Set RF GAIN (outer lever) to maximum (full clockwise at 10).
8. Set PLATE, PRESELECT(or) and BAND to 40 (Meters).
9. Set LOADING at 5 (mid-point at top).
10. Set MIC(rophone) GAIN and CARRIER at 0 (full counter-clockwise).
11. The FT-101E has two versions of the Clarifier. Follow either 11a or 11b.
11a. Set CLARIFIER at 0 (mid-point at top).
11b. Set CLAR(ifier) and LEVEL (outer lever) at 0 (mid-point at top).
12. Set Main Tuning Knob at 250. (250 in window and 0 on knob)
13. Set PO (power output)/IC (cathode current)/ALC (auto limiting control) to ALC.
14. Set CH2/CH1/EXT/TX EXT/RX EXT/INT to INT(ernal).
Now we can begin troubleshooting the radio WITH a dummy load connected.
15. Switch POWER to ON (up position). Leave HEATER set to OFF for now.
16. Turn AF GAIN to about 11 O’Clock or until you hear “hiss” from the speaker.
17. Turn PRESELECT clockwise or counter-clockwise slightly to peak noise.
18. Switch 25KHz/100KHz to 25KHz & adjust AF GAIN to comfortable tone level.
19. Turn Main Tuning Knob slightly clockwise and counter-clockwise to vary tone.
20. Switch 25KHz/100KHz to OFF.
21. Turn Main Tuning Knob to 300 in window and 0 on knob.
22. Switch 25KHz/100KHz to 100KHz & adjust AF GAIN to comfortable tone level.
23. Turn Main Tuning Knob slightly clockwise and counter-clockwise to vary tone.
24. Switch 25KHz/100KHz to OFF.
WARNING: When tuning transmitter, do NOT transmit longer than 15 seconds!
NOTE: Allow a 30 second minimum “cool-down” period between tuning intervals.
25. Switch HEATER to ON (up position).
26. Set PO/IC/ALC meter switch to IC.
27. Key the transmitter using the Microphone’s PTT (push-to-talk) or MOX switch.
28. Note the idle current (mA) of the cathode on the meter. Should be 60 mA.
29. Unkey the transmitter. Wait 30 seconds.
30. Key the transmitter using the Microphone’s PTT (push-to-talk) or MOX switch.
31. Rotate the MIC GAIN until IC is 40 mA higher than in Step 28.
32. Unkey the transmitter. Wait 30 seconds.
33. Set PO/IC/ALC meter switch to PO.
34. Key the transmitter using the Microphone’s PTT (push-to-talk) or MOX switch.
35. Slightly adjust PLATE, LOADING, and PRESELECT for maximum PO.
36. Unkey the transmitter. Wait 30 seconds.
37. Rotate CARRIER lever to maximum (full-clockwise at 10).
38. Key the transmitter using the Microphone’s PTT (push-to-talk) or MOX switch.
39. Alternately pre-peak PO using using the PLATE and PRESELECT knobs.
40. Unkey the transmitter. Wait 30 seconds.
41. Set PO/IC/ALC meter switch to IC.
42. Key the transmitter using the Microphone’s PTT (push-to-talk) or MOX switch.
43. Verify that IC is less than or equal to 0.1 (100 mA). Reduce CARRIER if higher.
44. Unkey the transmitter. Wait 30 seconds.
45. Key the transmitter using the Microphone’s PTT (push-to-talk) or MOX switch.
46. Slightly adjust PRESELCT for maximum IC reading on meter. Should be max now.
46. Slightly adjust PLATE for minimum IC reading on meter. Should already be at min.
47. Verify that IC is less than or equal to 0.1 (100 mA). Reduce CARRIER if higher.
48. Unkey the transmitter. Wait 30 seconds.
49. Repeat steps 33 through 35. Little or no adjustment should be necessary.
50. Set MIC GAIN and CARRIER to 0. Switch HEATER to OFF (down position).
This completes transmitter tuning, Refer to service manual if idle current of IC exceeds 60 mA or if PO maximum results in an off-scale meter reading which may indicate a high SWR.
1. Set POWER and HEATER to OFF (down).
2. Set MOX/PTT/VOX to PTT (middle).
3. Set PROCESS(or), NB (Noise Blanker), and RF ATT (Attenuator) to OFF.
4. Set 25KHz/100KHz (Calibrator) to OFF (middle).
5. Set MODE to LSB (full counter-clockwise).
6. Set AF GAIN (center knob) to minimum (full counter-clockwise at 0).
7. Set RF GAIN (outer lever) to maximum (full clockwise at 10).
8. Set PLATE, PRESELECT(or) and BAND to 40 (Meters).
9. Set LOADING at 5 (mid-point at top).
10. Set MIC(rophone) GAIN and CARRIER at 0 (full counter-clockwise).
11. The FT-101E has two versions of the Clarifier. Follow either 11a or 11b.
11a. Set CLARIFIER at 0 (mid-point at top).
11b. Set CLAR(ifier) and LEVEL (outer lever) at 0 (mid-point at top).
12. Set Main Tuning Knob at 250. (250 in window and 0 on knob)
13. Set PO (power output)/IC (cathode current)/ALC (auto limiting control) to ALC.
14. Set CH2/CH1/EXT/TX EXT/RX EXT/INT to INT(ernal).
Now we can begin troubleshooting the radio WITH a dummy load connected.
15. Switch POWER to ON (up position). Leave HEATER set to OFF for now.
16. Turn AF GAIN to about 11 O’Clock or until you hear “hiss” from the speaker.
17. Turn PRESELECT clockwise or counter-clockwise slightly to peak noise.
18. Switch 25KHz/100KHz to 25KHz & adjust AF GAIN to comfortable tone level.
19. Turn Main Tuning Knob slightly clockwise and counter-clockwise to vary tone.
20. Switch 25KHz/100KHz to OFF.
21. Turn Main Tuning Knob to 300 in window and 0 on knob.
22. Switch 25KHz/100KHz to 100KHz & adjust AF GAIN to comfortable tone level.
23. Turn Main Tuning Knob slightly clockwise and counter-clockwise to vary tone.
24. Switch 25KHz/100KHz to OFF.
WARNING: When tuning transmitter, do NOT transmit longer than 15 seconds!
NOTE: Allow a 30 second minimum “cool-down” period between tuning intervals.
25. Switch HEATER to ON (up position).
26. Set PO/IC/ALC meter switch to IC.
27. Key the transmitter using the Microphone’s PTT (push-to-talk) or MOX switch.
28. Note the idle current (mA) of the cathode on the meter. Should be 60 mA.
29. Unkey the transmitter. Wait 30 seconds.
30. Key the transmitter using the Microphone’s PTT (push-to-talk) or MOX switch.
31. Rotate the MIC GAIN until IC is 40 mA higher than in Step 28.
32. Unkey the transmitter. Wait 30 seconds.
33. Set PO/IC/ALC meter switch to PO.
34. Key the transmitter using the Microphone’s PTT (push-to-talk) or MOX switch.
35. Slightly adjust PLATE, LOADING, and PRESELECT for maximum PO.
36. Unkey the transmitter. Wait 30 seconds.
37. Rotate CARRIER lever to maximum (full-clockwise at 10).
38. Key the transmitter using the Microphone’s PTT (push-to-talk) or MOX switch.
39. Alternately pre-peak PO using using the PLATE and PRESELECT knobs.
40. Unkey the transmitter. Wait 30 seconds.
41. Set PO/IC/ALC meter switch to IC.
42. Key the transmitter using the Microphone’s PTT (push-to-talk) or MOX switch.
43. Verify that IC is less than or equal to 0.1 (100 mA). Reduce CARRIER if higher.
44. Unkey the transmitter. Wait 30 seconds.
45. Key the transmitter using the Microphone’s PTT (push-to-talk) or MOX switch.
46. Slightly adjust PRESELCT for maximum IC reading on meter. Should be max now.
46. Slightly adjust PLATE for minimum IC reading on meter. Should already be at min.
47. Verify that IC is less than or equal to 0.1 (100 mA). Reduce CARRIER if higher.
48. Unkey the transmitter. Wait 30 seconds.
49. Repeat steps 33 through 35. Little or no adjustment should be necessary.
50. Set MIC GAIN and CARRIER to 0. Switch HEATER to OFF (down position).
This completes transmitter tuning, Refer to service manual if idle current of IC exceeds 60 mA or if PO maximum results in an off-scale meter reading which may indicate a high SWR.
K4EET
Chaplain
Gerald, let me know once you see all 50 steps in my instructions. Thanks! 73, Dave K4EET
SPRINTERLIGHT29
Member
instructions
Thanks Dave
I have all 50 steps
Gerald
Thanks Dave
I have all 50 steps
Gerald
K4EET
Chaplain
Gerald, when will you be able to tune your FT-101E to see how it does? 73, Dave K4EET
SPRINTERLIGHT29
Member
Dave,
I wanted to spend some time on it today but the in-laws won.
Tomorrow Thanksgiving at our house. If I don't eat .to much turkey and pumpkin pie
then Tuesday is the target. I will let you know as soon as I can.
I trust you are taking it easy, listen to your doctor and get well soon !
Gerald
I wanted to spend some time on it today but the in-laws won.
Tomorrow Thanksgiving at our house. If I don't eat .to much turkey and pumpkin pie
then Tuesday is the target. I will let you know as soon as I can.
I trust you are taking it easy, listen to your doctor and get well soon !
Gerald
K4EET
Chaplain
Happy Thanksgiving to you and your family and friends! 73, Dave K4EET
SPRINTERLIGHT29
Member
Hi Dave,
I followed your steps for tuning. Everything fine until step 28. Idle current
should be 60 ma. I get no movement at all on the meter!!
Doesn't look good
Gerald
I followed your steps for tuning. Everything fine until step 28. Idle current
should be 60 ma. I get no movement at all on the meter!!
Doesn't look good
Gerald
SPRINTERLIGHT29
Member
Dave,
I do not have the original mic , using a Cobra radio mic. I am also still on the dummy load????
Gerald
I do not have the original mic , using a Cobra radio mic. I am also still on the dummy load????
Gerald
K4EET
Chaplain
See my response to the next post of yours...
K4EET
Chaplain
First, ALWAYS use a dummy load when testing. You do not want to test on the air and especially if the antenna is not a good match.
As for the Cobra mic, are you sure it is pin for pin and spec for spec compatible? You may not even be keying the radio with that microphone.
Going back to Step 27, key the radio using the MOX switch. To unkey, move the switch back to the PTT position. Do you get any meter movement using the MOX (manually operated transmit) switch?
73, Dave K4EET
SPRINTERLIGHT29
Member
Dave,
No movement at all
No movement at all
K4EET
Chaplain
At this point there does seem to be an anomaly. But I would not jump to any conclusions. There are many reasons why you may not be seeing any idle current; including a bad meter (as an example).
Here is the FT-101 series Sevice Manual from the Fox Tango Net:
http://www.foxtango.org/Manuals/FT-101_SVC_Manual.pdf
What kind of troubleshooting experience do you have? Do you know how to use a VOM? Do you even have a VOM? If you are not comfortable with troubleshooting this yourself, do you know any local hams and/or electronic technicians that could assist? Being able to read schematics will be a must-have skill to aid in troubleshooting.
How do you think we should proceed? You may even want to re-sell the rig as non-working, take your losses and buy a newer, working rig once you get your ham ticket. As far as that goes, I could even be interested in your non-working rig. I've been looking for one to fix up for my station.
Sooooooo Gerald, what do you want to do? If you want to call me on Skype to discuss your options in more detail, feel free to call. My Skype link is part of all of my postings.
I'll be looking for your comments on what troubleshooting experience you have, what test equipment you have and generally how you want to proceed.
73, Dave K4EET
K4EET
Chaplain
Here is the microphone schematic:
73, Dave K4EET
73, Dave K4EET
Common problems with FT101s of a certain age (i.e. they are old!):
1 Intermittent switches. They may need a cleaning. In the day, carbon tetrachloride which is bad for you spray on tuner cleaner, Rock them back and forth, main problem is the band switch.
2 Missing jumper. There is a jumper required on the main accessory plug in the back. If it is missing, the filaments in the finals and the driver tube do not work. You will not have any cathode current to measure. Look through the vent holes and see if the filaments are lit.
3 As mentioned before, flat capacitors. This usually causes other problems, not failure of the finals.
I have one question, does the radio receive? The preselector tuning works best peaking a received signal. The 10 mhz receive only band would test the sensitivity of the receiver. WWV should be receivable at your location.
Craig
1 Intermittent switches. They may need a cleaning. In the day, carbon tetrachloride which is bad for you spray on tuner cleaner, Rock them back and forth, main problem is the band switch.
2 Missing jumper. There is a jumper required on the main accessory plug in the back. If it is missing, the filaments in the finals and the driver tube do not work. You will not have any cathode current to measure. Look through the vent holes and see if the filaments are lit.
3 As mentioned before, flat capacitors. This usually causes other problems, not failure of the finals.
I have one question, does the radio receive? The preselector tuning works best peaking a received signal. The 10 mhz receive only band would test the sensitivity of the receiver. WWV should be receivable at your location.
Craig
K4EET
Chaplain
Gerald, Craig brought up a point that I was not aware of. Check for the jumper in Item 2 since that apparently will also "kill" the idle current.
Craig, Gerald already checked the receive and it seems to be OK. Not sure of the sensitivity.
73, Dave K4EET
K4EET
Chaplain
Craig,
I have reviewed both the Operations Manual and the Service Manual but cannot find any reference to the connector with the jumper. I was hoping to find a pictorial for Gerald to refer to. Do you have a picture of the jumper that you referred to in Item 2?
73, Dave K4EET
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