开云体育

...and if I measure at the output of Q4001 I get nothing. I think Q4001 is toast.

Hi Andy If I measure at J3006 on the RF board, I'm only getting 60mV This output runs to the input of Q4001 If I reseat the cable and measure at pin 1 of Q4001 I only get 12.5mV ?? Max

OK on your detector probe: 50mW should give 1.6V input Pin4 Q4001 up to 10 Watts so 22V RF output 50 Watts 50V 73 Andrew Sent: 14 July 2022 15:15 To: [email protected] Subject: Re: [YaesuFT847]

I'll have the parts here tomorrow to build the probe. Won't have a chance to look at it until next week, it's my wife's 60th birthday this weekend! Happy wife....

True I know it is tricky, anyhow there is some measuring to do first Sent: 14 July 2022 13:06 To: [email protected] Subject: Re: [YaesuFT847] Schematics? I saw that module. Wondering how legit is

Off to lunch back in 90 mins Sent: 14 July 2022 12:47 To: [email protected] Subject: Re: [YaesuFT847] Schematics? Hi Andy 3.66V I'll build an RF probe. Can't find a 1N34A. Any good subs?

I saw that module. Wondering how legit is is? Could be a counterfeit.

If you are referring to the 3.66V, that was on pin 2 of Q4001. I get 13.7V on pin 3. I'll need the probe to measure pin 1 input and pin 4 output.

Sent: 14 July 2022 13:02 To: [email protected] Subject: Re: [YaesuFT847] Schematics? http://guanxin.en.seekic.com/product/integrated_circuits_ics/PF0340A.html Any germanium or Shockey diode will do

http://guanxin.en.seekic.com/product/integrated_circuits_ics/PF0340A.html Any germanium or Shockey diode will do just add .6 off a volt OK 3.66V at 50 OHM + 3.8mW to 4mW Where are you measuring?

http://guanxin.en.seekic.com/product/integrated_circuits_ics/PF0340A.html Replacement 4001! Sent: 13 July 2022 19:25 To: [email protected] Subject: Re: [YaesuFT847] Schematics? The voltages at

Hi Andy 3.66V I'll build an RF probe. Can't find a 1N34A. Any good subs?

Hi max, Check the voltage on Pin 2 of Q4001, this is the power control! 73 Andrew Sent: 14 July 2022 11:55 To: [email protected] Subject: Re: [YaesuFT847] Schematics? Sent: 13 July 2022 19:25 To:

Sent: 13 July 2022 19:25 To: [email protected] Subject: Re: [YaesuFT847] Schematics? The voltages at Q4001 look good, as do the measurements at Q4006. Does the 285mA reading seem reasonable

The voltages at Q4001 look good, as do the measurements at Q4006. Does the 285mA reading seem reasonable considering Q4006 is not putting any power out? I think Q4001 is good based on the signal

Greetings, I was wondering and it is possible the question has been asked and answered, so I am sorry then. The FT 847 moni feature for SSB is nice. Is there a way to enable this feature for AM and FM

That is good news, so looks like a drive issue or lack of 73 Andrew Get Outlook for Android

I know the presets you are talking about. The previous owner said 440 was working at one time but hadn't used that band in a while. Went to work satellites and no output. It's not a big deal for me,

Emitter is grounded. There is another possibility. On one of the boards is a line of presets that control output power. It could be that the UHF one is faulty, but I have no idea how that circuit

*Hi Andy, In measuring Q4006 earlier, I get 0.725V on the base, 13.67 on the collector in both TX and RX. * The emitter measures a short to ground. Max