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Ok then the PA transistors are not been driven, 100 Watts is over 20 Amps, so it is not the low pass filters. You will need to probe the HF PA, check the bias pots? are are creating the correct

Roughly 5 A at 50 Mhz? with an unstable reading on the power supply

How much current is it drawing at full throttle ?Get BlueMail for Android ?

Dear FT 847 owners, after 20 + years of honest service few days ago my FT 847 started to loose output power on HF and 50/70 Mhz. Now on HF and 50/70 Mhz it delivers only less that 10 w out. I

Hi I think they are pull off, however, check there are no small screw holes. Check the RX IF circuit for the AGC line I do not have a circuit with me, but I will be at home in 7

May be a silly suggestion, is IF shift in correct position?

I already did a reset. Same.? TNX already removed the knob. 73 ----- Mensagem de Andy Bosworth <sidthepop@...> --------- Data: Tue, 22 Aug 2023 14:04:13 +0100 De: Andy Bosworth

Sent while portable! please excuse typos.

Do a reset on radio first before finding a fault that may not exist. VFO knob is removed by turning radio upside down, look at shuffle jog, there is a slot in it. Use small Allen Key, about 1.5mm or

OK! TNX for answer. How do I remove the front knob of the radio? I need to clean the board. 73 ----- Mensagem de Andrew Lenton <a@...> --------- Data: Tue, 22 Aug 2023 13:26:31 +0100 De:

Hi S meter is derived from the agc level, do a place to start 73 Andrew on beach in Cornwall ?Get BlueMail for Android ?

My FT847 do not have any s meter reading. Audio seems ok as tx also. Where to look pse for this issue? 73 CU3AK Eloy

Sounds like a cable problem. Do you know someone with an MD100 who you can borrow their cable? At least lend them your cable and see if it’s working. Need to think about this and try some

Hello Spence, This is results of the continuity measurements. I measured continuity between pins 7 and 8 at the bottom of the mic and it tested OK. so the mic itself is good. I then measured pins 7

The only switches underside are high emphasis, filter pass through and low cut. There is no in and off. De Spence M0STO Sent while portable! please excuse typos.

All you have to do is turn the microphone on, you will find a switch underneath on the base. Some radios it will work on both of us. It will only work on position one or position two. Sent from Jeff

Sorry forgot to ask if you have tried shouting into the mic in SSB.? Also the shield/ground wire is between the mic element and the internal cabling. Replacing the external cable won’t solve this

Hi, Steven, I’ve had a few MD100’s and they have a common failing. The shield wire drops off and you lose microphone ground (not to be confused with signal ground on pin 5). The

I have a Yaesu MD-100A8X microphone connected to a Yaesu FT-847 radio and when I press the PTT the radio shows a carrier going out and the carrier is being seen by all parties but no audio. Through

Impeccable condition. Includes the following: - CW filter 500Hz - Signalink USB digital sound card for digital mode like FT8, SSTV, RTTY - RS232 to USB adapter for CAT rig control - Power cable with