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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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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.

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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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

On Sun, Nov 17, 2024 at 11:54 AM, <szegedylaszlo@...> wrote:

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?

?

>> 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

?

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?

?

>> Check to see if the 1st oscillator crystals are actually there for 160m and 10m.

?

?

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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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

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!!

Dear Bruce Collins!