Re: FT-101E Receive Faulty

#53

Well, if one or both power tubes are slightly oscillating from poor neutralization, your receiver could hear it as a carrier or the bizarre harmonics from that oscillation could also leak into your audio chain somehow.?

Re: FT-101E Receive Fault

#52

开云体育

Hi Noel,

The fault is only on receive, I have not tried to transmit yet.? I have found the info about neutralization, but not sure how this affects receive only.

Steve G4AQB

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Sent from for Windows

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Re: FT-101E Receive Fault

#51

Steve

the RF gain circuit is connected to PC 1181 - MJ(1), PB 1183 -MJ(3), PB 1582- MJ(7). Check the voltage chart.

pg 4-17

Emerson

PP6EW

Em qua., 8 de set. de 2021 às 01:14, Steve <steve@...> escreveu:

Show quoted text

Hi
I have been given an FT101E in very good condition, but it has a fault on receive, here are the symptoms:

Picking up stations, but when the RF gain is turned up the signal becomes unstable and oscillates.
Can anyone suggest where the fault may be?

Steve G4AQB

Re: FT-101E Receive Fault

noel pakihi

#50

Gidday Steve,

The paired finals possibly need neutralizing.
Search the files folder for instructions

73 de VK2CAO

FT-101E Receive Fault

#49

Hi
I have been given an FT101E in very good condition, but it has a fault on receive, here are the symptoms:

Picking up stations, but when the RF gain is turned up the signal becomes unstable and oscillates.
Can anyone suggest where the fault may be?

Steve G4AQB

Re: FT-101e Meter issue

Timothy Brown WB2PAY

#48

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?

Roger,

?

Yes, I agree I have to check the circuit before replacing the meter and destroying a new meter.

I will search ebay again and see if I can find the item you mention.

Thanks

?

Tim Brown, WB2PAY,
Licensed since 1962

?

Show quoted text

From: [email protected] [mailto:[email protected]] On Behalf Of Roger VE7LB
Sent: Monday, July 19, 2021 12:00 PM
To: [email protected]
Subject: Re: [Yaesu-FT-101] FT-101e Meter issue

Hi Tim,
When I search eBay for FT-101 meter I get about 10 results for S meters including one for $16 delivered. Item # 114863571802 .
Before putting in a good meter suggest checking the IC current measurement section resistors first.

73
Roger VE7LB

Re: FT-101e Meter issue

#47

Hi Tim,
When I search eBay for FT-101 meter I get about 10 results for S meters including one for $16 delivered. Item # 114863571802 .
Before putting in a good meter suggest checking the IC current measurement section resistors first.

73
Roger VE7LB

Re: FT-101e Meter issue

Timothy Brown WB2PAY

#46

开云体育

While?evaluating?an old rig for a friend, I discovered the meter in a FT-101E is not working.

I found using a millivolt source and series current limiting resistor that the meter coil is open.

Substituting my Fluke on the 300mv range I was able to get readings, although it is difficult to

correlate them to what they would be on an analog meter.

?

I could not find? specs on what the micro amp rating?for the meter.

?

Searching epay, I found rigs to be parted out but no individual meter movement that has been scavenged

from a rig.

?

I would be interested in finding data about and ?a source for the meter movement.

?

Thanks

?

Tim Brown, WB2PAY,
Licensed since 1962

Re: modulation usb lsb calibration ft-101zd

#45

ok grazie

iz8jfa

73

------ Messaggio originale ------

Da: "Roger VE7LB" <Roger_VE7LB@...>

A: [email protected]

Inviato: 13/07/2021 20:36:56

Oggetto: Re: [Yaesu-FT-101] modulation usb lsb calibration ft-101zd

Hi Franco,

Many FT-101's have had their Carrier Crystals adjusted to match the aging crystal filter. A different white noise sound when switching from USB to LSB or vice-versa is the usual indication of a problem.

Please see the pdf located in our Files Folder #6 FT-101ZD Carrier Crystals Adjustment. Also good for the original FT-101 series.

73
Roger VE7LB

Mail priva di virus.

Re: modulation usb lsb calibration

#44

Hi Franco,

Many FT-101's have had their Carrier Crystals adjusted to match the aging crystal filter. A different white noise sound when switching from USB to LSB or vice-versa is the usual indication of a problem.

Please see the pdf located in our Files Folder #6 FT-101ZD Carrier Crystals Adjustment. Also good for the original FT-101 series.

Also please see the FT-101ZD operators manual located in folder #6 page 35.

73
Roger VE7LB

Re: modulation usb lsb calibration ft-101zd

#43

Hi Franco,

Many FT-101's have had their Carrier Crystals adjusted to match the aging crystal filter. A different white noise sound when switching from USB to LSB or vice-versa is the usual indication of a problem.

Please see the pdf located in our Files Folder #6 FT-101ZD Carrier Crystals Adjustment. Also good for the original FT-101 series.

73
Roger VE7LB

Re: modulation usb lsb calibration

#42

I don't know but from the service manual I can't figure out what I need to adjust

------ Messaggio originale ------

Da: "Emerson PP6EW via groups.io" <elsh_x@...>

A: "[email protected]" <[email protected]>

Inviato: 13/07/2021 16:10:37

Oggetto: Re: [Yaesu-FT-101] modulation usb lsb calibration

Franco

I'm not sure, but you can verify the signal amplitude of USB and LSB oscillators Q3 and Q5 at the PB 1184. Are the same?

Emerson
PP6EW

Mail priva di virus.

Re: modulation usb lsb calibration

Emerson PP6EW

#40

Franco

I'm not sure, but you can verify the signal amplitude of USB and LSB oscillators Q3 and Q5 at the PB 1184. Are the same?

Emerson

PP6EW

modulation usb lsb calibration ft-101zd

#39

hello I have a modulation difference between usb and lsb in lsb the modulation is wider, in usb it comes out narrower what should I calibrate to have a usb and lsb modulation the same?

iz8jfa

franco

Mail priva di virus.

modulation usb lsb calibration

#38

hello I have a modulation difference between usb and lsb in lsb the modulation is wider, in usb it comes out narrower what should I calibrate to have a usb and lsb modulation the same?

iz8jfa

franco  73

Mail priva di virus.

Re: frequency calibration ft-101zd

#37

tc01 now adjusted the frequency is all correct on the whole hf range
thank you

izjfa 73

------ Messaggio originale ------

Da: "Roger VE7LB" <Roger_VE7LB@...>

A: [email protected]

Inviato: 08/07/2021 17:54:14

Oggetto: Re: [Yaesu-FT-101] frequency calibration ft-101zd

Hi Franco,
Try adjusting the TC-1 trimmer on the display board.

73
Roger VE7LB

Mail priva di virus.

Re: frequency calibration ft-101zd

#36

Hi Franco,
Try adjusting the TC-1 trimmer on the display board.

73
Roger VE7LB

frequency calibration ft-101zd

#35

hello my ft-101zd is not perfectly in frequency it is out of frequency example if I go to 141000 mhz the correct frequency is 140998 mhz to center it in frequency I have the instruments of the laboratory frequency meter but I don't know what I need to adjust can someone help me?

iz8jfa franco

Mail priva di virus.

Re: FT-101e ALC issue

#33

I used an NTE 312 which I have on hand to fix the Sony icf-2010 receivers. 2sk19gr actually crossed to an NTE 133 which I also have, but the 133 has a different pin assignment.

Show quoted text

On Thu, Jun 10, 2021, 12:27 PM Bruce Collins KB0TJ <kb0tj1@...> wrote:

VG.?
What FET device did you use?

On Thu, Jun 10, 2021 at 9:06 AM Bob Dostall KF8IY <bobd@...> wrote:
Hi Buddy,
I just wanted to let you know that I replaced the FET Q6 on the processor board also and now the ALC is rock solid. The sad part is that my first instinct was to replace the ALC pot. and Q6 from the start, but I talked myself out of it. Oh well. I do want to thank you for your replies and pointing me back to the right direction. It's much appreciated.
Bob Dostall
Senior Technician
Vasu Communications

On Tue, Jun 8, 2021 at 2:57 PM Bob Dostall KF8IY via <bobd=[email protected]> wrote:
Well Buddy I decided to just replace VR2 ALC pot and VR1 as well on the speech processor board. That seems to have pretty much fixed it. The ALC meter deflection diminishes somewhat after I ran it for an hour, but I still get about a half of a scale of deflection?after an hour. It was never that good before. I did try another driver and same results. I think that I'll consider myself happy at this point.
Bob Dostall
Senior Technician
Vasu Communications

On Tue, Jun 8, 2021 at 1:15 PM Bruce Collins KB0TJ <kb0tj1@...> wrote:
Have you replaced the 12BY7 with a new one yet?
I have found a few times an ALC issue go away for some reason with a new driver tube.?

Re: FT-101e ALC issue

#32

VG.?

What FET device did you use?

Show quoted text

On Thu, Jun 10, 2021 at 9:06 AM Bob Dostall KF8IY <bobd@...> wrote:

Hi Buddy,
I just wanted to let you know that I replaced the FET Q6 on the processor board also and now the ALC is rock solid. The sad part is that my first instinct was to replace the ALC pot. and Q6 from the start, but I talked myself out of it. Oh well. I do want to thank you for your replies and pointing me back to the right direction. It's much appreciated.
Bob Dostall
Senior Technician
Vasu Communications

On Tue, Jun 8, 2021 at 2:57 PM Bob Dostall KF8IY via <bobd=[email protected]> wrote:
Well Buddy I decided to just replace VR2 ALC pot and VR1 as well on the speech processor board. That seems to have pretty much fixed it. The ALC meter deflection diminishes somewhat after I ran it for an hour, but I still get about a half of a scale of deflection?after an hour. It was never that good before. I did try another driver and same results. I think that I'll consider myself happy at this point.
Bob Dostall
Senior Technician
Vasu Communications

On Tue, Jun 8, 2021 at 1:15 PM Bruce Collins KB0TJ <kb0tj1@...> wrote:
Have you replaced the 12BY7 with a new one yet?
I have found a few times an ALC issue go away for some reason with a new driver tube.?