Re: FT-101 EE PB1547 Voltages
Vince
I? have replaced Q3 2sc784 by a BF199.
Emerson PP6EW
Em sex., 8 de mar. de 2024 às 11:20, Vincent Fischer < vf6fhellcat@...> escreveu:
Emerson!
Have you led me literally STRAIGHT to the likely source of my TX issue?! Please check out the Q3 transistor base voltages in attached image.
Thank you,
Vince, KN6KKZ
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Re: FT-101 EE PB1547 Voltages
Emerson! Have you led me literally STRAIGHT to the likely source of my TX issue?! Please check out the Q3 transistor base voltages in attached image. Thank you, Vince, KN6KKZ 
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Re: FT-101 EE PB1547 Voltages
Emerson,
Thank you very much for sharing that information! I will certainly dig into the manual and try to learn the procedure to test that component. I have ordered the silver mica caps C13, C11 and C131, as I’ve been told that they should be replaced regardless of how they test. I also ordered a 10pf final neutralizer cap to be prepared to use USA made 6JS6C’s. I have a retired radio/TV shop owner ham friend looking through his tube inventory as we speak.
Thanks again!
Vince, KN6KKZ
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Re: FT-101 EE PB1547 Voltages
Vince
The pin 5 voltage spec is around -150v.? A source of Tx problems is often Q3 (2sc784R) at PB 1181B RF unit.
The attached manual can help you,? Good luck
Emerson PP6EW
Em qua., 6 de mar. de 2024 às 19:54, Vincent Fischer < vf6fhellcat@...> escreveu:
Hello,?
I am new to the FT-101 world and new to the group and new to radio repair in general (and to be clear, I’m NOT an 11meter operator). I recently got my hands on a beautiful old FT-101 EE. It receives perfectly but no TX (3 watts). I have pulled all the boards and carefully cleaned all the contacts. I see no sign of damage or excessive heat in any of the components, with exception of the NEC tubes which both have some pretty dark oval staining inside. No signs of modification in this rig. I have checked the voltages on PB1547, and have found pin #2 at -72v (-60v spec), pin #4 at -21v (-20v spec) and pin #5 at -192v (-100v spec). I’m wondering if that high voltage on pin #5 is an indicator of a specific issue, or with the bias and driver voltages being within reason, could those old tubes have died from “natural causes”. Any feedback is greatly appreciated!
Vince Fischer, KN6KKZ
Ione, Ca.
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FT-101 EE PB1547 Voltages
Hello,?
I am new to the FT-101 world and new to the group and new to radio repair in general (and to be clear, I’m NOT an 11meter operator). I recently got my hands on a beautiful old FT-101 EE. It receives perfectly but no TX (3 watts). I have pulled all the boards and carefully cleaned all the contacts. I see no sign of damage or excessive heat in any of the components, with exception of the NEC tubes which both have some pretty dark oval staining inside. No signs of modification in this rig. I have checked the voltages on PB1547, and have found pin #2 at -72v (-60v spec), pin #4 at -21v (-20v spec) and pin #5 at -192v (-100v spec). I’m wondering if that high voltage on pin #5 is an indicator of a specific issue, or with the bias and driver voltages being within reason, could those old tubes have died from “natural causes”. Any feedback is greatly appreciated!
Vince Fischer, KN6KKZ
Ione, Ca.
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Re: Rs: need help fixing a Yeasu ft-101-es
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On Fri, Jan 26, 2024 at 2:27?AM Steven Eizenberg < kc7byp@...> wrote: Hi All. Re: I reasnly got a partly working Yeasu FT-101-ES. I got it asis from a pawn shop. The Pawn shop got the 101 in an estate sale. The 101 came Complete expect for no A/C or DC power cord. I got an A/C power cord from eBay. The A/C
cord arrived about a week ago. the 101 powers up BUT there is very little
sound, just a tinny bit of static and when I turn on my FT-890 HF rig (It works great) to 3.980mhz and turned the antenna switch to the
FT-101-ES and turned the mod on the 101 to tune and moved the ptt
switch to MOX I got a very loud tone out of the transmit on the 101 and about 30 watts power reading on my MFJ-941E tuner with the 101 preselect, plate and load tuned right. I can hear my own voice on the FT-890 when I speak in the mic on the 101. All 3 tube filaments light up. So that tells me that the TX is working up to the
driver tube and probably the finals are putting some power out.? It also tells me that the 3 ganged tuned IF cans haven't been messed with (thank God for that). It has been many years since I last worked on any FT-101 anything. I am going to need some guidance on fixing this rig. All I have for test gear is an old Echo tube driven RF GEN and a Ideal 61-340 digital VOM. I sold my portable tube checker a few years back.
BTW When I tried to TX on the FT-890 I heard NOTHING on the FT-101-ES
?
?
?
From the desk of the Amateur radio station of?KC7BYP
1/24/2024
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Re: need help fixing a Yeasu ft-101-es
Glad it worked out.? Thanks for the feedback.
--
73, KK7JNR
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Re: need help fixing a Yeasu ft-101-es
Hi Dan. I found out why the the reason that the receive isn't working. A suggestion from Alex N7SM at the winter field day. To check the headphone jack. Sure enough I jumped the pines on the back of the headphone jack with an alger clip and I got full sound. But I don't reremember how to get the head phone jack out.
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Re: Rs: need help fixing a Yeasu ft-101-es
Hi Steve, I have the FT-101E but have never heard of the ES.? I checked online to see if any schematics were available but did not locate one.? I did find out the below information about it.? Maybe that's why I'm not finding any documentation on it.? It looks to have been manufactured in the late 70's.? Since you have three tubes your transceiver must have been modified for more power output.? I assume that the input power was changed from 100VAC to the US 120VAC requirement.? Using your VOM you could measure the supply voltages.? A schematic from another model might help verifying if your unit is close to that to determine voltages.? The unit is old enough that you may have high ESR, leaking capacitors throughout.? That should be an easy check to measure some of the smaller caps with an ESR meter and you can do it in circuit as long as the caps have been discharged before measuring.? You mentioned working on these units before, so you probably know all this.? I'm not an expert but plan on powering up my 101E but using a dim bulb tester I need to build.? I bought my Yaesu it the late 70's and would hate to see any smoke as most parts are obsolete.?? Good luck and let us know how it goes.
- The?FT-101ES?was a special FT-101E model for the Japanese market only with a single 6JS6C tube and 50-watt output.
Dan -- 73, KK7JNR
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Rs: need help fixing a Yeasu ft-101-es
Hi All. Re: I reasnly got a partly working Yeasu FT-101-ES. I got it asis from a pawn shop. The Pawn shop got the 101 in an estate sale. The 101 came Complete expect for no A/C or DC power cord. I got an A/C power cord from eBay. The A/C
cord arrived about a week ago. the 101 powers up BUT there is very little
sound, just a tinny bit of static and when I turn on my FT-890 HF rig (It works great) to 3.980mhz and turned the antenna switch to the
FT-101-ES and turned the mod on the 101 to tune and moved the ptt
switch to MOX I got a very loud tone out of the transmit on the 101 and about 30 watts power reading on my MFJ-941E tuner with the 101 preselect, plate and load tuned right. I can hear my own voice on the FT-890 when I speak in the mic on the 101. All 3 tube filaments light up. So that tells me that the TX is working up to the
driver tube and probably the finals are putting some power out.? It also tells me that the 3 ganged tuned IF cans haven't been messed with (thank God for that). It has been many years since I last worked on any FT-101 anything. I am going to need some guidance on fixing this rig. All I have for test gear is an old Echo tube driven RF GEN and a Ideal 61-340 digital VOM. I sold my portable tube checker a few years back.
BTW When I tried to TX on the FT-890 I heard NOTHING on the FT-101-ES
?
?
?
From the desk of the Amateur radio station of?KC7BYP
1/24/2024
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Re: FR-101D with LED display?
Thanks for the info! I uploaded some pictures of the display unit and the restoration. I'm definitely need to find a FL-101 now! HI....
Erwin, PA3DAF
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Re: FR-101D with LED display?
Erwin, I have one of these FR-101’s with the LED’s as well. I have never been able to find any documentation on the LED version either other than verifying these were part of the last production run of the FR-101.? If you do happen to find any additional info on yours, please share with the group. I think these were quite rare. Yours is the only other one I’m aware of.? I also have several FR-101’s with the more common green VFD tubes. Great receiver, (I have mine paired with the matching FL-101).
Tom / W7OA
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On Jan 11, 2024, at 10:35, PA3DAF <PA3DAF@...> wrote:
?I recently bought this FR-101D with LED display. It was very dirty inside and outside but with all filters, FM unit and a 2 meter converter. Last weeks I cleaned it thoroughly and everything seems to work but it needs some realignment and the top cover can use some new paint.? But how rare are these? I only find pictures and info of the D versions with the green nixie tubes. I can't find any schematic or manual about his LED version and it's all original Yaesu! Who has more info? <thumbnail_IMG_6035.jpg> Erwin, PA3DAF
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Re: FR-101D with LED display?
Hello Erwin,
I have an FR-101D, together with the matching hybrid transmitter, the FL-101.
My FR-101D has the green display. I have the original manual for it. I bought the pair together with the FL-2000B at an estate sale. The transmitter and the receiver didn't work initially, but after thorough cleaning from accumulated dirt inside and applying contact cleaner to all the switches, potentiometers, and internal connectors, the set works great. I use the setup dedicated to a regional AM net on 80 meters, and I get compliments on the audio quality.
I can scan my manual and make a PDF file I'll be happy to share with you.
73, Meir WF2U
Landrum, SC
On Jan 11, 2024, at 1:35?PM, PA3DAF < pa3daf@...> wrote:
I recently bought this FR-101D with LED display. It was very dirty inside and outside but with all filters, FM unit and a 2 meter converter. Last weeks I cleaned it thoroughly and everything seems to work but it needs some realignment and the top cover can use some new paint.? But how rare are these? I only find pictures and info of the D versions with the green nixie tubes. I can't find any schematic or manual about his LED version and it's all original Yaesu! Who has more info?
Erwin, PA3DAF
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Re: FR-101D with LED display?
Hi,
I’ve just checked my FR101D and it has a green display, I too have an FL101 and the FR101D, I also have a standard FR101 analogue display. The only thing I can’t find is the 5 pin plug for the cable end. Thinking of using Din socket and plug.
Regards
Amanda
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Re: FR-101D with LED display?
The red LED’S came out in the last runs of the FR-101 digital display models. ? 73 Roger VE7LB ?
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From: [email protected] <[email protected]> On Behalf Of PA3DAF
Sent: Thursday, January 11, 2024 1:42 PM
To: [email protected]
Subject: [Yaesu-FT-101] FR-101D with LED display?? [Edited Message Follows] I recently bought this FR-101D with LED display. It was very dirty inside and outside but with all filters, FM unit and a 2 meter converter. Last weeks I cleaned it thoroughly and everything seems to work but it needs some realignment and the top cover can use some new paint.? But how rare are these? I only find pictures and info of the D versions with the green nixie tubes. I can't find any schematic or manual about this LED version and it's all original Yaesu! Who has more info?
Erwin, PA3DAF
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Re: FR-101D with LED display?
If you go onto the Fox Tango International? website i think there are or maybe some info on there .There is alawys somebody on that site who will point you in the right direction .
I also have the the FR101/FL101 reveiver/ transmitter but mine was rescued after a lightning strike the transmitter taking the hit? the joining harness was almost destroyed but they both still function after repair work hope maybe helps , Regards Steve 2E0MDM?
On Thu, 11 Jan 2024, 18:35 PA3DAF, < PA3DAF@...> wrote: I recently bought this FR-101D with LED display. It was very dirty inside and outside but with all filters, FM unit and a 2 meter converter. Last weeks I cleaned it thoroughly and everything seems to work but it needs some realignment and the top cover can use some new paint.? But how rare are these? I only find pictures and info of the D versions with the green nixie tubes. I can't find any schematic or manual about his LED version and it's all original Yaesu! Who has more info?
Erwin, PA3DAF
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FR-101D with LED display?
I recently bought this FR-101D with LED display. It was very dirty inside and outside but with all filters, FM unit and a 2 meter converter. Last weeks I cleaned it thoroughly and everything seems to work but it needs some realignment and the top cover can use some new paint.? But how rare are these? I only find pictures and info of the D versions with the green nixie tubes. I can't find any schematic or manual about this LED version and it's all original Yaesu! Who has more info?  Erwin, PA3DAF
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Re: FT-101ZD Relay Cleaning
Garden variety?
Peter G0 LQU
Eric W7EV wrote:
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I'm assuming this radio has a garden variety changeover relay but wanted to check with those more experienced with the ZD. Assuming the relay is the stock relay, are there any tricks I should be aware of or anything I should be concerned about? Is it silver plated? I don't want to damage it so can I just attack it with a dollar bill and some deoxit? Anyone? Anyone?
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I'm assuming this radio has a garden variety changeover relay but wanted to check with those more experienced with the ZD.? Assuming the relay is the stock relay, are there any tricks I should be aware of or anything I should be concerned about? Is it silver plated? I don't want to damage it so can I just attack it with a dollar bill and some deoxit? Anyone?? Anyone?
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Re: Yaesu ft 101E no ALC indication on SSB
Thanks again Peter. I'll look into those items. (when I next get the inclination!)
Peter G0LQU
Peter Roberts G4DJB wrote:
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Okay Peter - that one sounds very much like a leaky C13. That capacitor couples the anode of the driver to the grids of the PA and is another of those known weak spots!
I sounds as if your radio does need a fair bit of TLC and I would recommend replacing C11, C13, C131 and C17 - all of these are chassis mounted items on the underside of the radio in the driver/PA area. Whilst there, the driver & PA areas should also be checked to see if any of the resistors there have gone out of tolerance and replace any that have.
I have an early 101 and a late 101E and have seen all of the above capacitors go leaky on one or both radios, plus a number of the resistors in the driver/PA area go out of tolerance.
73,
Peter
G4DJB
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Vince, KN6KKZ
