Re: Sommerkamp FT-277ZD (Yaesu FT101ZD) MK3 has RX and TX problem on some bands
Dear Bruce Collins!
Thanks! I found the oscillator board, every crystal is on the board , no missing crystal
Thanks László ha5bzr?
As viewed from the front of the radio in it’s normal operating position, the crystal oscillator board is in the front right corner by the loading control shaft and is mounted vertically?
the slug adjustments for each crystal are for coupling and you should read the service manual to learn how to set each section’s output level. You don’t really change the frequency of each section by adjusting these slugs!!
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Re: Sommerkamp FT-277ZD (Yaesu FT101ZD) MK3 has RX and TX problem on some bands
As viewed from the front of the radio in it’s normal operating position, the crystal oscillator board is in the front right corner by the loading control shaft and is mounted vertically?
the slug adjustments for each crystal are for coupling and you should read the service manual to learn how to set each section’s output level. You don’t really change the frequency of each section by adjusting these slugs!!
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Re: Sommerkamp FT-277ZD (Yaesu FT101ZD) MK3 has RX and TX problem on some bands
Dear Roger VE7LB!
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Thanks the answer.
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Yes, I peaked the preselector for maximum on 1800kHz , but only S2, on 1850kHz is also S2 if I peak the preselector maximum
But on 1825kHz and 1875 kHz is S9
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Where is the 1st oscillator crystals for 160m and 10m?
For 160m is one crystal and 10m is four crystals??
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These crystals are for tx and rx or only tx?
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Thanks: Laszlo ha5bzr
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Re: Sommerkamp FT-277ZD (Yaesu FT101ZD) MK3 has RX and TX problem on some bands
On Sun, Nov 17, 2024 at 11:54 AM, <szegedylaszlo@...> wrote:
Dear Friends!
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RX:
I have a Sommerkamp FT277ZD MK3, it is the same transceiver like Yaesu FT101ZD MK3
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The marker signal is on 1800kHz only S2, but on 1825kHz is S9, on 1850kHz only S2, on 1875kHz is S9, why is so big difference?
Is it problem? Other bands the marker signal is about S9. Marker signal level is not good or my transceiver rx is not good on 160m?
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>> Did you peak the preselector setting for1800kHz?
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On 160m I hear the station well if the antenna is on the radio but the noise level is now only S3 on my Sommerkamp FT277ZD and the beacon on 1850kHz is S4, on my IC751A? the noise level is S8 and beacon is S9, other bands the two transceiver has the same noise level
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TX:
On 160m and 10m no power output, other bands is ok 100W.
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>> Check to see if the 1st oscillator crystals are actually there for 160m and 10m.
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On 160m and 10m if I rotate VOX GAIN to MOX the Ic is 50mA, it is ok.
But If try to increase the drive level clockwise the Ic is the same, not more, if I rotate the PRESELECTOR it does not matter, no power.
Can you help me?
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>> Check to see if the 1st oscillator crystals are actually there for 160m and 10m.
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I have only multimeter and Diamond SX-100 power/SWR meter. I have an oscilloscope also, but not using it.
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Thanks: Laszlo? ha5bzr
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73 Roger VE7LB
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Sommerkamp FT-277ZD (Yaesu FT101ZD) MK3 has RX and TX problem on some bands
Dear Friends!
?
RX:
I have a Sommerkamp FT277ZD MK3, it is the same transceiver like Yaesu FT101ZD MK3
?
The marker signal is on 1800kHz only S2, but on 1825kHz is S9, on 1850kHz only S2, on 1875kHz is S9, why is so big difference?
Is it problem? Other bands the marker signal is about S9. Marker signal level is not good or my transceiver rx is not good on 160m?
?
On 160m I hear the station well if the antenna is on the radio but the noise level is now only S3 on my Sommerkamp FT277ZD and the beacon on 1850kHz is S4, on my IC751A? the noise level is S8 and beacon is S9, other bands the two transceiver has the same noise level
?
TX:
On 160m and 10m no power output, other bands is ok 100W.
On 160m and 10m if I rotate VOX GAIN to MOX the Ic is 50mA, it is ok.
But If try to increase the drive level clockwise the Ic is the same, not more, if I rotate the PRESELECTOR it does not matter, no power.
Can you help me?
?
I have only multimeter and Diamond SX-100 power/SWR meter. I have an oscilloscope also, but not using it.
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Thanks: Laszlo? ha5bzr
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Re: Yaesu FT101ZD Slow rising output only on 40M!
I have had low drive issues on 40 and 80 related to worn contacts on one of the wafers of the band switch (FT101ZD first edition). ??
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On Nov 5, 2024, at 1:19?PM, PA3DAF via groups.io <PA3DAF@...> wrote:
Hello to you all,
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Recently I bought a Yaesu FT101ZD MK3. It needed a lot of cleaning and was “deaf” due to a blown J310 in the RF unit but everything works fine now except for a strange slow power increase on 40M.
I can tune the transceiver to maximum power but it takes about 10 seconds before the output is at its max. When I release the PTT, wait for a few seconds and go back to transmit I have instant full power BUT when I wait for a minute or longer the output power starts at about 25 Watts and slowly (10 seconds) climbs to full power. This happens only on 40M!!
I checked and rechecked everything but can’t find anything wrong:
- All (HV) voltages OK, changed all HV caps, no change.
- Output from the RF unit is stable.
- Output on the “rf-out” jack on the back is stable.
- Changed driver and PA tubes from my FT902, no change.
- Bandswitch is cleaned and all contacts checked with ohm meter.
- T/R relay OK.
- Aligned the trimmerboards for 40M, no change.
- All bands 100W output, 80-90W on 10m.
- No ALC indication on the meter.
- Checked for cold solder joints in driver and PA unit.
The output at the "RF OUT" jack is nice and steady so I suspected that there is something wrong with the (40M) C trimmer board or with a 40M only component in the PA tank circuit. I checked and changed C107, a 620pF ceramic capacitor for a silver mica, no change. I can perfectly align the 40M part of the trimmer board so that one also drops from the list.
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Today I fed the input of the driver with a signal generator at 7.1 MHz. 20 dBm input gives me 100W output and exactly the same behaviour as described above. So there must be something wrong in the driver of pa unit but only at 40M.
I’m really out of options now.  This is a video of the 101ZD outputmeter which demonstrates the effect: Video of the output at the RF JACK on a SA and the slow rising output on a watt meter with 50 Ohms dummy. Who has an idea what's wrong here. Any help will be appreciated. 73's Erwin, PA3DAF? ?
(I posted this problem in several other forums but forgot his one)
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Yaesu FT101ZD Slow rising output only on 40M!
Hello to you all,
?
?
?
Recently I bought a Yaesu FT101ZD MK3. It needed a lot of cleaning and was “deaf” due to a blown J310 in the RF unit but everything works fine now except for a strange slow power increase on 40M.
I can tune the transceiver to maximum power but it takes about 10 seconds before the output is at its max. When I release the PTT, wait for a few seconds and go back to transmit I have instant full power BUT when I wait for a minute or longer the output power starts at about 25 Watts and slowly (10 seconds) climbs to full power. This happens only on 40M!!
I checked and rechecked everything but can’t find anything wrong:
- All (HV) voltages OK, changed all HV caps, no change.
- Output from the RF unit is stable.
- Output on the “rf-out” jack on the back is stable.
- Changed driver and PA tubes from my FT902, no change.
- Bandswitch is cleaned and all contacts checked with ohm meter.
- T/R relay OK.
- Aligned the trimmerboards for 40M, no change.
- All bands 100W output, 80-90W on 10m.
- No ALC indication on the meter.
- Checked for cold solder joints in driver and PA unit.
The output at the "RF OUT" jack is nice and steady so I suspected that there is something wrong with the (40M) C trimmer board or with a 40M only component in the PA tank circuit. I checked and changed C107, a 620pF ceramic capacitor for a silver mica, no change. I can perfectly align the 40M part of the trimmer board so that one also drops from the list.
?
Today I fed the input of the driver with a signal generator at 7.1 MHz. 20 dBm input gives me 100W output and exactly the same behaviour as described above. So there must be something wrong in the driver of pa unit but only at 40M.
I’m really out of options now. This is a video of the 101ZD outputmeter which demonstrates the effect: Video of the output at the RF JACK on a SA and the slow rising output on a watt meter with 50 Ohms dummy. Who has an idea what's wrong here. Any help will be appreciated. 73's Erwin, PA3DAF? ?
(I posted this problem in several other forums but forgot his one)
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Hi,
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I'm looking for a S-Meter for.my FR-101.
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Thank
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Re: side-tone frequency adjustment?
cool. I'll see if I can get the board out and have a fiddle. thanks!
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Re: side-tone frequency adjustment?
Yep- I misunderstood the question. Thanks for the correction.
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Tom ai4th
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Re: side-tone frequency adjustment?
Is that a Sidetone Level control? I think he wants to adjust the sidetone frequency.
Per manual……. The tone oscillator Q7 (2SC373) operates when the MODE switch is in CW position, and the key is closed. (Pin 10 grounded). It is a phase shift oscillator operating at approximately 800 Hz. The tone output is activated by the keying c i r c u i t and then coupled through SIDETONE LEVEL control VR4 to the receiver audio amplifier for sidetone monitoring in CW operation. The output from Q7 is also coupled to the VOX amplifier Q4 for semi break- in CW operation.
You’d need to play with the RC values, my understanding.
Fernando N2FQ/6
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On Oct 19, 2024, at 11:38?AM, Tom ai4th <alnath14308@...> wrote:
Control is inside under the top lid on the side opposite the final amplifier cage. It is normally labeled. ?? It is worth getting the manual (and the service manual). Lots of user-useful stuff is under the lid!? Google is your friend- copies are free.
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73,
Tom ai4th
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Re: side-tone frequency adjustment?
Control is inside under the top lid on the side opposite the final amplifier cage. It is normally labeled. ?? It is worth getting the manual (and the service manual). Lots of user-useful stuff is under the lid!? Google is your friend- copies are free.
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73,
Tom ai4th
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side-tone frequency adjustment?
hi all
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My 101 has a cw side-tone frequency of about 1310 cps.? according to the manual it's meant to be around 800 (which would fit with the cw filter)
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Does anyone know of an easy (or difficult) way to adjust it, please?
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My s/n is:
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Going off some Inrad, Fox Tango and Yaesu data here:
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I've found filters in 20KHz, 12KHz, 6KHz, 2.4KHz (of various shape factors and pole counts), 1.8KHz, 600Hz, 500Hz and 250Hz bandwidths.
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Were there any more bandwidths offered? 4KHz, 350Hz, etc.?
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The 12KHz ones (Tayima P/N TF30H12) also cross to a YF30H12. I cannot find any of these stateside. Perhaps someone has a couple in their junk box? There's an eBay seller in UK who offers them but doesn't ship to the US - and won't return a message about them. Perhaps someone across the pond can help me snag a few?
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Thanks - 73
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Fred, N8YX
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Re: FR-101D with LED display?
Resurrecting an older thread, but with pertinent info for FR-101 owners:
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I recently bought an FR-101D (S/N 8H210225) from the auction site as a restoration project. The receiver has red LEDs in the display. Some years ago I'd gotten a late model display unit and bezel from a parts seller with the aim to convert my FR-101S to a D but this one just happened along.
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After cleaning and inspection I powered it up to check out the display. Bear in mind that a number of standard range crystals had been swapped for others of various coverage segments so I had no idea what to expect from the display. On most ranges it's reading 500KHz low. I'm assuming this has to do with a range selection line (0/+500) so that's to be investigated. I wanted to make sure someone hadn't fooled with the VFO so I swapped my other red display unit in.
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With that one...15 and 20M track correctly. The others...either show "96.000.0", "4.000.0", "1.000.0" or are 500KHz low. Next step was to physically examine the counter boards and check for evidence of funny business. What I found are two distinctly different PCBs. I'm not sure how either compare to the schematic posted earlier in thread but comparison and analysis is the next step. Then diagnosis and repair.
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The original counter has S/N 210142 affixed and the spare, 200350. I took pics of both sides of the boards as well as a rear shot with the S/N tags. Will upload them if anyone's interested, and update this thread with comparisons from the schematics.
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73 - Fred, N8YX
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The Actual Update Version of the FT-101ZD Survival Guide Wanted
I completed a web search for the subject document. ?I found version 3 at the foxtango website. ?I found one response at a person’s personal website with version 4, dated Spring 2016; all others found were prior to version 3. ?Perhaps I overlooked it at the foxtango website where I would expect it to be, but can anyone tell me what the real latest version of PA0PGA’s FT-101ZD Survival Guide actually is at present, and where it can be viewed and downloaded? ?Perhaps this group.io has it stored someplace. ?Version 4 has an apparent critical new message about the “Killer Condenser” in the final cage which short circuits and causes a calamity of damage, apparently having happened many times to others.
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Thank you.
73,
Michael Smith, N4KZO
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National WD9223 DPST 250VAC, 10A Power Switch
I’m looking for an original switch made in Japan, in new or like new condition.
Thank you.
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73,
Michael Smith, N4KZO
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Re: FT-101ZD Rectifier B Board Orange Material Around Base of Radial-Lead Capacitors
It is adhesive used to keep the caps in place, usually during machine soldering. It starts out yellow but as it ages it becomes brown. It also can become conductive and corrosive. Best to remove it before it creates problems. On Thu, 3 Oct 2024 13:06:26 -0700 "Fernando Quinones N2FQ via groups.io" <n2fq@...> wrote: I recapped that board and is dry adhesive. I just scraped it off and installed new capacitors.
I’m not worried about any vibration that might fatigue the leads of the caps.
Fernando N2FQ/6
On Oct 3, 2024, at 12:53?PM, Michael Smith via groups.io <tw8kcabpilot@...> wrote:
There is an orange material filling the edge-space between the Rectifier B Board and the end of some cylindrical electrolytic capacitors. This occurs only on capacitors along the outside of the mounted-capacitor array, upward and sideward (front-back), of several electrolytic capacitors on the vertically mounted board. -- 73 -Jim NU0C
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Re: FT-101ZD Rectifier B Board Orange Material Around Base of Radial-Lead Capacitors
I recapped that board and is dry adhesive. I just scraped it off and installed new capacitors.
I’m not worried about any vibration that might fatigue the leads of the caps.
toggle quoted message
Show quoted text
On Oct 3, 2024, at 12:53?PM, Michael Smith via groups.io <tw8kcabpilot@...> wrote:
There is an orange material filling the edge-space between the Rectifier B Board and the end of some cylindrical electrolytic capacitors. This occurs only on capacitors along the outside of the mounted-capacitor array, upward and sideward (front-back), of several electrolytic capacitors on the vertically mounted board. ?It looks to me like this orange material is meant to be there, as if it is perhaps a dielectric to prevent breakdown to anything grounded that gets close enough and to keep dust out of these crevices, as these capacitors are used in circuits that produce bias voltages. ?I’ve seen this material on more than one FT-101Z.
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Looking in the Survival Guide and Yaesu - Musen Maintenance Manual, I see no mention of what this material is. ?Does anyone know with certainty what this material is doing there, or how it got there?
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Thank you.
73,
Michael Smith, N4KZO
<IMG_0164.jpeg>
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FT-101ZD Rectifier B Board Orange Material Around Base of Radial-Lead Capacitors
There is an orange material filling the edge-space between the Rectifier B Board and the end of some cylindrical electrolytic capacitors. This occurs only on capacitors along the outside of the mounted-capacitor array, upward and sideward (front-back), of several electrolytic capacitors on the vertically mounted board. ?It looks to me like this orange material is meant to be there, as if it is perhaps a dielectric to prevent breakdown to anything grounded that gets close enough and to keep dust out of these crevices, as these capacitors are used in circuits that produce bias voltages. ?I’ve seen this material on more than one FT-101Z.
?
Looking in the Survival Guide and Yaesu - Musen Maintenance Manual, I see no mention of what this material is. ?Does anyone know with certainty what this material is doing there, or how it got there?
?
Thank you.
73,
Michael Smith, N4KZO
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Bruce Collins
Jimi Wills
Tom ai4th
Fernando Quinones N2FQ
Jim Shorney
