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Using K2 with broken D1 on the K60XV

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Michael Jensen

Using K2 with broken D1 on the K60XV

Hi

During last night trying to finish op the asssembly of the K60XV i
faced MHz) the S the transverter band n i was looking for bad soldering components. I did hit D1, the pind diode that ofca have ofcause placed an order to replace this diode, but it wil not arrive here for the weekend. Beeing a lazzy basterd, i like to
use th and put back th it will not be a issue t with a broken or removed diode if&nbs Did i get that wrong ??

If any comments on the S meter showing full signal, they are
welcome as

Thanks in advance

OZ1BZJ

Michael

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Don Wilhelm-3

RE: Using K2 with broken D1 on the K60XV

Michael,

You are correct - the PIN doides D1 and D2 form the T/R switch for the low
power output.

If you do not use the low power output, you can operate the K2 from the
normal BNC antenna jack as usual without that diode installed.

The number of bars on the K2 LED during transmit indicate the approximate
power output of the K2 - if you had the LED Display set for RF, the Low
power output set for 1 mW maximum, and the requested power set for 1 mW, the
expected result would be all bars lighted.

If you dialed only .5 mW on the K2 power request knob, one would expect only
5 of the bars lighted. If you have all bars lighted no matter what the
power request setting, you should look into the circuits at the lower right
quadrant of the K60XV schematic (labeled XVTR ALC) - you will find the
problem with that portion of the circuit. I would need more detail to
provide additional information.

73,
Don W3FPR

> -----Original Message-----
>
> During last night trying to finish op the asssembly of the K60XV i
> faced=a issue, that during the test on the transverter band (50
> MHz) the S=meter was showing full signal at all times. Only on
> the transverter band n=t on 60M or any other band. In desperation
> i was looking for bad soldering=pushing a little to the
> components. I did hit D1, the pind diode that ofca=se broke. I
> have ofcause placed an order to replace this diode, but it wil=
> not arrive here for the weekend. Beeing a lazzy basterd, i like to
> use th= K2 for the weekend, but i do not like to remove the K60XV
> and put back th= components. Now the question, for what i can see
> it will not be a issue t= use the K2 with the K60XV installed
> with a broken or removed diode if&nbs=;a transverter is not used.
> Did i get that wrong ??
>
> If any comments on the S meter showing full signal, they are
> welcome as =ell
>
> Thanks in advance

> OZ1BZJ
>
> Michael
>

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Michael Jensen

Re: Using K2 with broken D1 on the K60XV

Hi Don

Thanks for confirming me on the use with the broken pin Diode.

For the issue with S meter i did not explain the case very good. The issue I
see is in RX not in TX . I have not testede the K60XV in TX yet. But in RX
the S meter show full signal (all bar light). This do only happen in the
transverter band on 10M or even on the 60M everything looks ok. Nothing are
connected to the low power in/out on the K2.

Br.

Michael

---- Original Message -----
From: "Don Wilhelm" <[hidden email]>
To: <[hidden email]>; "'Elecraft Reflector'"
<[hidden email]>
Sent: Thursday, January 05, 2006 8:58 PM
Subject: RE: [Elecraft] Using K2 with broken D1 on the K60XV

> Michael,
>
> You are correct - the PIN doides D1 and D2 form the T/R switch for the low
> power output.
>
> If you do not use the low power output, you can operate the K2 from the
> normal BNC antenna jack as usual without that diode installed.
>
> The number of bars on the K2 LED during transmit indicate the approximate
> power output of the K2 - if you had the LED Display set for RF, the Low
> power output set for 1 mW maximum, and the requested power set for 1 mW,
> the
> expected result would be all bars lighted.
>
> If you dialed only .5 mW on the K2 power request knob, one would expect
> only
> 5 of the bars lighted. If you have all bars lighted no matter what the
> power request setting, you should look into the circuits at the lower
> right
> quadrant of the K60XV schematic (labeled XVTR ALC) - you will find the
> problem with that portion of the circuit. I would need more detail to
> provide additional information.
>
> 73,
> Don W3FPR
>
>> -----Original Message-----
>>
>> During last night trying to finish op the asssembly of the K60XV i
>> faced=a issue, that during the test on the transverter band (50
>> MHz) the S=meter was showing full signal at all times. Only on
>> the transverter band n=t on 60M or any other band. In desperation
>> i was looking for bad soldering=pushing a little to the
>> components. I did hit D1, the pind diode that ofca=se broke. I
>> have ofcause placed an order to replace this diode, but it wil=
>> not arrive here for the weekend. Beeing a lazzy basterd, i like to
>> use th= K2 for the weekend, but i do not like to remove the K60XV
>> and put back th= components. Now the question, for what i can see
>> it will not be a issue t= use the K2 with the K60XV installed
>> with a broken or removed diode if&nbs=;a transverter is not used.
>> Did i get that wrong ??
>>
>> If any comments on the S meter showing full signal, they are
>> welcome as =ell
>>
>> Thanks in advance
>
>> OZ1BZJ
>>
>> Michael
>>
>
>
>

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Don Wilhelm-3

RE: Using K2 with broken D1 on the K60XV

Michael,

Given the conditions you now report, I would say that you have some kind of
noise source that is causing the S-meter to respond. You will have to track
down the source of that noise. Have you tried it with a 50 ohm load on the
input jack to the K60XV? There are no active components in the receive path
(other than the PIN diode) on the K60XV board - the input jack is routed
directly to the K2 bandpass filter, so you may want to check the K60XV
carefully for wiring errors.

73,
Don W3FPR

> -----Original Message-----
> From: [hidden email]
> [mailto:[hidden email]]On Behalf Of Michael Jensen
> Sent: Friday, January 06, 2006 1:55 PM
> To: [hidden email]; 'Elecraft Reflector'
> Subject: Re: [Elecraft] Using K2 with broken D1 on the K60XV
>
>
> Hi Don
>
> Thanks for confirming me on the use with the broken pin Diode.
>
> For the issue with S meter i did not explain the case very good.
> The issue I
> see is in RX not in TX . I have not testede the K60XV in TX yet.
> But in RX
> the S meter show full signal (all bar light). This do only happen in the
> transverter band on 10M or even on the 60M everything looks ok.
> Nothing are
> connected to the low power in/out on the K2.
>
> Br.
>
> Michael
>
>
> ---- Original Message -----
> From: "Don Wilhelm" <[hidden email]>
> To: <[hidden email]>; "'Elecraft Reflector'"
> <[hidden email]>
> Sent: Thursday, January 05, 2006 8:58 PM
> Subject: RE: [Elecraft] Using K2 with broken D1 on the K60XV
>
>
> > Michael,
> >
> > You are correct - the PIN doides D1 and D2 form the T/R switch
> for the low
> > power output.
> >
> > If you do not use the low power output, you can operate the K2 from the
> > normal BNC antenna jack as usual without that diode installed.
> >
> > The number of bars on the K2 LED during transmit indicate the
> approximate
> > power output of the K2 - if you had the LED Display set for RF, the Low
> > power output set for 1 mW maximum, and the requested power set
> for 1 mW,
> > the
> > expected result would be all bars lighted.
> >
> > If you dialed only .5 mW on the K2 power request knob, one would expect
> > only
> > 5 of the bars lighted. If you have all bars lighted no matter what the
> > power request setting, you should look into the circuits at the lower
> > right
> > quadrant of the K60XV schematic (labeled XVTR ALC) - you will find the
> > problem with that portion of the circuit. I would need more detail to
> > provide additional information.
> >
> > 73,
> > Don W3FPR
> >
> >> -----Original Message-----
> >>
> >> During last night trying to finish op the asssembly of
> the K60XV i
> >> faced=a issue, that during the test on the transverter band (50
> >> MHz) the S=meter was showing full signal at all times. Only on
> >> the transverter band n=t on 60M or any other band. In desperation
> >> i was looking for bad soldering=pushing a little to the
> >> components. I did hit D1, the pind diode that ofca=se broke. I
> >> have ofcause placed an order to replace this diode, but it wil=
> >> not arrive here for the weekend. Beeing a lazzy basterd,
> i like to
> >> use th= K2 for the weekend, but i do not like to remove the K60XV
> >> and put back th= components. Now the question, for what i can see
> >> it will not be a issue t= use the K2 with the K60XV installed
> >> with a broken or removed diode if&nbs=;a transverter is not used.
> >> Did i get that wrong ??
> >>
> >> If any comments on the S meter showing full
> signal, they are
> >> welcome as =ell
> >>
> >> Thanks in advance
> >
> >> OZ1BZJ
> >>
> >> Michael
> >>
> >
> >
> >
>
>
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>
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