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Phil Shepard

Elecraft SSB net announcement

The weekly Elecraft SSB net will meet tomorrow (4/15/12) at 1800Z on 14.3035
MHz +/- QRM. Dale, WC7S, will be the net control station from WY. Have a
good net.

73,

Phil, NS7P

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Phil Shepard

Elecraft SSB net announcement

The weekly Elecraft SSB net will meet tomorrow (4/22/12) at 1800Z on 14.3035
MHz +/- QRM. I will be the net control station from Oregon. See you there.

73,

Phil, NS7P

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Phil Shepard

Elecraft SSB net announcement

The weekly Elecraft SSB net will meet tomorrow (4/29/12) at 1800Z on 14.3035
MHz +/- QRM. I will be the net control station from Oregon. See you there.

73,

Phil, NS7P

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Tony

Re: Elecraft UK_EUlocal net

Dear all is there a eu/Uk Elecraft net. If so what the time and QRG please
Thanks
Tony G0GMS

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Dave Johnson

Re: Elecraft UK_EUlocal net

Not any more. I set an 80m SSB Sunday morning net up some time ago, it
was later run by Ian, G0VGS. There were few callers so we called it a
day.

73 Dave, G4AON

>Dear all is there a eu/Uk Elecraft net. If so what the time and QRG please
>Thanks
>Tony G0GMS
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David Cutter

Re: Elecraft UK_EUlocal net

I would be happy to join a net again, I've just strung up a new aerial and
you might hear me now on 80 or 40m.

David
G3UNA

----- Original Message -----
From: "Dave Johnson" <[hidden email]>
To: "elecraft" <[hidden email]>
Sent: Sunday, April 29, 2012 10:08 AM
Subject: Re: [Elecraft] Elecraft UK_EUlocal net

> Not any more. I set an 80m SSB Sunday morning net up some time ago, it
> was later run by Ian, G0VGS. There were few callers so we called it a
> day.
>
> 73 Dave, G4AON
>
>>Dear all is there a eu/Uk Elecraft net. If so what the time and QRG please
>>Thanks
>>Tony G0GMS
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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M0XDF

Re: Elecraft UK_EUlocal net

I too would be happy to join again, but the time didn't suit me - a bit early on a Sunday :-)
What about during the week in evening, (but diff band)?

73 de David, M0XDF (K3 #174, P3 #108)
--
Some primal termite knocked on wood, And tasted it, and found it good!
And that is why your Cousin May, Fell through the parlor floor today.
- Ogden Nash (1902-1971)

On 29 Apr 2012, at 13:09, David Cutter wrote:

> I would be happy to join a net again, I've just strung up a new aerial and
> you might hear me now on 80 or 40m.
>
> David
> G3UNA
>
>
> ----- Original Message -----
> From: "Dave Johnson" <[hidden email]>
> To: "elecraft" <[hidden email]>
> Sent: Sunday, April 29, 2012 10:08 AM
> Subject: Re: [Elecraft] Elecraft UK_EUlocal net
>
>
>> Not any more. I set an 80m SSB Sunday morning net up some time ago, it
>> was later run by Ian, G0VGS. There were few callers so we called it a
>> day.
>>
>> 73 Dave, G4AON
>>
>>> Dear all is there a eu/Uk Elecraft net. If so what the time and QRG please
>>> Thanks
>>> Tony G0GMS
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>
> ______________________________________________________________
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Gregg Marco W6IZT

PR-6 issue when QRO

I use my K3 on 6 meters with a concerted SB-220. When using the PR6
connected to the KXV3 as intended and using the amp, the GaAs FET is
destroyed immediately. My work around was to employ an external TR relay on
the K3 to switch TX RX, connecting the PR6 to the RX side of the relay and
to the RX input of the KXV3.Using this arrangement has worked fine for the
past few years.

With E skip season approaching I thought that I would try to resolve this
problem and get rid of the extra RF plumbing.

My initial thought was the TR relay in the amp might be too slow and RF was
being reflected back into the K3 during the transition from TX to RX. After
looking at the K3 block diagram I doubt that this is the case as the PR-6
should be switched out of the circuit well before any RF is present at the
output.

For reference the TR relays in the amp are spec'ed at 8 msec to switch and
the K3 is set at 8 msec TX delay, which I believe is the default.

Any ideas?

73
Gregg
W6IZT

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Ken G Kopp

Re: PR-6 issue when QRO

Gregg,

FWIW, I have a PR6 and use a THP amp on 6M with no problem.

73!

Kem - K0PP
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Don Wilhelm-4

Re: PR-6 issue when QRO

In reply to this post by Gregg Marco W6IZT

Gregg,

Unless you have changed the open frame relay in the SB-220, it will take
at least 15 ms to switch and be clear of the contact bounce. I would
suggest you change the stock relay for something faster.

73,
Don W3FPR

On 4/29/2012 8:55 AM, Gregg Marco W6IZT wrote:

> I use my K3 on 6 meters with a concerted SB-220. When using the PR6
> connected to the KXV3 as intended and using the amp, the GaAs FET is
> destroyed immediately. My work around was to employ an external TR relay on
> the K3 to switch TX RX, connecting the PR6 to the RX side of the relay and
> to the RX input of the KXV3.Using this arrangement has worked fine for the
> past few years.
>
> With E skip season approaching I thought that I would try to resolve this
> problem and get rid of the extra RF plumbing.
>
> My initial thought was the TR relay in the amp might be too slow and RF was
> being reflected back into the K3 during the transition from TX to RX. After
> looking at the K3 block diagram I doubt that this is the case as the PR-6
> should be switched out of the circuit well before any RF is present at the
> output.
>
> For reference the TR relays in the amp are spec'ed at 8 msec to switch and
> the K3 is set at 8 msec TX delay, which I believe is the default.
>

Gregg Marco W6IZT

Re: PR-6 issue when QRO

Don:

I have replaced the open frame relay with Schrack relays

73
Gregg

-----Original Message-----
From: Don Wilhelm [mailto:[hidden email]]
Sent: Sunday, April 29, 2012 10:12 AM
To: Gregg Marco W6IZT
Cc: 'elecraft'
Subject: Re: [Elecraft] PR-6 issue when QRO

Gregg,

Unless you have changed the open frame relay in the SB-220, it will take at
least 15 ms to switch and be clear of the contact bounce. I would suggest
you change the stock relay for something faster.

73,
Don W3FPR

On 4/29/2012 8:55 AM, Gregg Marco W6IZT wrote:

> I use my K3 on 6 meters with a concerted SB-220. When using the PR6
> connected to the KXV3 as intended and using the amp, the GaAs FET is
> destroyed immediately. My work around was to employ an external TR
> relay on the K3 to switch TX RX, connecting the PR6 to the RX side of
> the relay and to the RX input of the KXV3.Using this arrangement has
> worked fine for the past few years.
>
> With E skip season approaching I thought that I would try to resolve
> this problem and get rid of the extra RF plumbing.
>
> My initial thought was the TR relay in the amp might be too slow and
> RF was being reflected back into the K3 during the transition from TX
> to RX. After looking at the K3 block diagram I doubt that this is the
> case as the PR-6 should be switched out of the circuit well before any
> RF is present at the output.
>
> For reference the TR relays in the amp are spec'ed at 8 msec to switch
> and the K3 is set at 8 msec TX delay, which I believe is the default.
>

Joe Subich, W4TV-4

Re: PR-6 issue when QRO

Greg,

Is that SB-200 a "modified for 6 meters only" amplifier, one that has
six meters added to the HF bands or is the problem happening when
operating on HF bands?

Is the K3/PR6 configured to bypass and turn the PR6 off when operating
on HF?

73,

... Joe, W4TV

On 4/29/2012 11:10 AM, Gregg Marco W6IZT wrote:

> Don:
>
> I have replaced the open frame relay with Schrack relays
>
> 73
> Gregg
>
> -----Original Message-----
> From: Don Wilhelm [mailto:[hidden email]]
> Sent: Sunday, April 29, 2012 10:12 AM
> To: Gregg Marco W6IZT
> Cc: 'elecraft'
> Subject: Re: [Elecraft] PR-6 issue when QRO
>
> Gregg,
>
> Unless you have changed the open frame relay in the SB-220, it will take at
> least 15 ms to switch and be clear of the contact bounce. I would suggest
> you change the stock relay for something faster.
>
> 73,
> Don W3FPR
>
> On 4/29/2012 8:55 AM, Gregg Marco W6IZT wrote:
>> I use my K3 on 6 meters with a concerted SB-220. When using the PR6
>> connected to the KXV3 as intended and using the amp, the GaAs FET is
>> destroyed immediately. My work around was to employ an external TR
>> relay on the K3 to switch TX RX, connecting the PR6 to the RX side of
>> the relay and to the RX input of the KXV3.Using this arrangement has
>> worked fine for the past few years.
>>
>> With E skip season approaching I thought that I would try to resolve
>> this problem and get rid of the extra RF plumbing.
>>
>> My initial thought was the TR relay in the amp might be too slow and
>> RF was being reflected back into the K3 during the transition from TX
>> to RX. After looking at the K3 block diagram I doubt that this is the
>> case as the PR-6 should be switched out of the circuit well before any
>> RF is present at the output.
>>
>> For reference the TR relays in the amp are spec'ed at 8 msec to switch
>> and the K3 is set at 8 msec TX delay, which I believe is the default.
>>
>
> ______________________________________________________________
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> Help: http://mailman.qth.net/mmfaq.htm
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>

Mark n2qt

Re: PR-6 issue when QRO

In reply to this post by Don Wilhelm-4

I may just have been lucky so far, but with a DEM 6M preamp and
converted SB220, everyone has been getting along with the default
8ms delay in the K3 and a stock SB220 relay.

Be aware that relay switching speeds are specified without a
snubber diode connected. Adding the diode can greatly extend
the release time of a relay. With the limited testing I have done,
it seems not all relays act in the same way (i.e. some go much
slower, others not so much). In the Dow-key design guide they
indicate "A transient suppression diode across the actuating coil
can increase the release time of an electromechanical switch by
as much as 100 times." There are ways around this with the
use of zeners instead of just a diode.

Mark n2qt

-----Original Message-----
From: Don Wilhelm
Sent: Sunday, April 29, 2012 10:11 AM
To: Gregg Marco W6IZT
Cc: 'elecraft'
Subject: Re: [Elecraft] PR-6 issue when QRO

Gregg,

Unless you have changed the open frame relay in the SB-220, it will take
at least 15 ms to switch and be clear of the contact bounce. I would
suggest you change the stock relay for something faster.

73,
Don W3FPR

On 4/29/2012 8:55 AM, Gregg Marco W6IZT wrote:

> I use my K3 on 6 meters with a concerted SB-220. When using the PR6
> connected to the KXV3 as intended and using the amp, the GaAs FET is
> destroyed immediately. My work around was to employ an external TR relay
> on
> the K3 to switch TX RX, connecting the PR6 to the RX side of the relay and
> to the RX input of the KXV3.Using this arrangement has worked fine for the
> past few years.
>
> With E skip season approaching I thought that I would try to resolve this
> problem and get rid of the extra RF plumbing.
>
> My initial thought was the TR relay in the amp might be too slow and RF
> was
> being reflected back into the K3 during the transition from TX to RX.
> After
> looking at the K3 block diagram I doubt that this is the case as the PR-6
> should be switched out of the circuit well before any RF is present at the
> output.
>
> For reference the TR relays in the amp are spec'ed at 8 msec to switch and
> the K3 is set at 8 msec TX delay, which I believe is the default.
>

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Gregg Marco W6IZT

Re: PR-6 issue when QRO

In reply to this post by Joe Subich, W4TV-4

Joe:

It is a 6m only amp. Yes, the K3 is set to bypass the PR6 when on HF. The TR
relay has been replaced by a TR switch that Dick, K5AND designed that uses
Schrack relays that are spec'd to switch in 8 msec.

73
Gregg

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Joe Subich, W4TV
Sent: Sunday, April 29, 2012 11:34 AM
To: [hidden email]
Subject: Re: [Elecraft] PR-6 issue when QRO

Greg,

Is that SB-200 a "modified for 6 meters only" amplifier, one that has six
meters added to the HF bands or is the problem happening when operating on
HF bands?

Is the K3/PR6 configured to bypass and turn the PR6 off when operating on
HF?

73,

... Joe, W4TV

On 4/29/2012 11:10 AM, Gregg Marco W6IZT wrote:

> Don:
>
> I have replaced the open frame relay with Schrack relays
>
> 73
> Gregg
>
> -----Original Message-----
> From: Don Wilhelm [mailto:[hidden email]]
> Sent: Sunday, April 29, 2012 10:12 AM
> To: Gregg Marco W6IZT
> Cc: 'elecraft'
> Subject: Re: [Elecraft] PR-6 issue when QRO
>
> Gregg,
>
> Unless you have changed the open frame relay in the SB-220, it will
> take at least 15 ms to switch and be clear of the contact bounce. I
> would suggest you change the stock relay for something faster.
>
> 73,
> Don W3FPR
>
> On 4/29/2012 8:55 AM, Gregg Marco W6IZT wrote:
>> I use my K3 on 6 meters with a concerted SB-220. When using the PR6
>> connected to the KXV3 as intended and using the amp, the GaAs FET is
>> destroyed immediately. My work around was to employ an external TR
>> relay on the K3 to switch TX RX, connecting the PR6 to the RX side of
>> the relay and to the RX input of the KXV3.Using this arrangement has
>> worked fine for the past few years.
>>
>> With E skip season approaching I thought that I would try to resolve
>> this problem and get rid of the extra RF plumbing.
>>
>> My initial thought was the TR relay in the amp might be too slow and
>> RF was being reflected back into the K3 during the transition from TX
>> to RX. After looking at the K3 block diagram I doubt that this is the
>> case as the PR-6 should be switched out of the circuit well before
>> any RF is present at the output.
>>
>> For reference the TR relays in the amp are spec'ed at 8 msec to
>> switch and the K3 is set at 8 msec TX delay, which I believe is the

default.

>>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
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> list: http://www.qsl.net/donate.html
>

vk4tux

Re: PR-6 issue when QRO

In reply to this post by Don Wilhelm-4

Besides my earlier direct email to you Greg, changing the sb-220 120v FT
supply to a FWB rectifier and replace the C4 electrolytic with a 200uF to
320 uF works very well at speeding up the existing relay. The much larger
capacitor can be sourced from a good one from the HV capacitor bank when
replacing bad units.
The FT supply handles the much larger capacitance with no issue.

Circuit see right side : http://www.somis.org/add-160m-d.jpg

I have 3 sb-220's here, One has a AG6K qsk kit fitted which works very well.
They all have FWB rectifier (relay)supplies and 450v/320uF electrolytic's
which fit snug between the deck base and lower side rail @ 35mm diameter.
Just silicone in place.

Adrian ... vk4tux

NB; FT = Filament transformer

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Joe Subich, W4TV-4

Re: PR-6 issue when QRO

In reply to this post by Gregg Marco W6IZT

> The TR relay has been replaced by a TR switch that Dick, K5AND
> designed that uses Schrack relays that are spec'd to switch in 8
> msec.

Is the K5AND TR Switch design documented anywhere?

Does it use a single relay or multiple relays? Is there any chance that
the input replay is dropping out while the SB-200 is still making
RF?

Do you have any separate receive antennas connected to the "bypass"
ports on the PR6? Do the receive antennas have a "front end saver"
inline?

Short of a problem elsewhere, I do not see how 6 meter RF from the
amplifier can get back through the K3 T/R switch, HPA and LPA to
even get to the PR6.

73,

... Joe, W4TV

On 4/29/2012 11:56 AM, Gregg Marco W6IZT wrote:

> Joe:
>
> It is a 6m only amp. Yes, the K3 is set to bypass the PR6 when on HF. The TR
> relay has been replaced by a TR switch that Dick, K5AND designed that uses
> Schrack relays that are spec'd to switch in 8 msec.
>
> 73
> Gregg
>
> -----Original Message-----
> From: [hidden email]
> [mailto:[hidden email]] On Behalf Of Joe Subich, W4TV
> Sent: Sunday, April 29, 2012 11:34 AM
> To: [hidden email]
> Subject: Re: [Elecraft] PR-6 issue when QRO
>
>
> Greg,
>
> Is that SB-200 a "modified for 6 meters only" amplifier, one that has six
> meters added to the HF bands or is the problem happening when operating on
> HF bands?
>
> Is the K3/PR6 configured to bypass and turn the PR6 off when operating on
> HF?
>
> 73,
>
> ... Joe, W4TV
>
>
> On 4/29/2012 11:10 AM, Gregg Marco W6IZT wrote:
>> Don:
>>
>> I have replaced the open frame relay with Schrack relays
>>
>> 73
>> Gregg
>>
>> -----Original Message-----
>> From: Don Wilhelm [mailto:[hidden email]]
>> Sent: Sunday, April 29, 2012 10:12 AM
>> To: Gregg Marco W6IZT
>> Cc: 'elecraft'
>> Subject: Re: [Elecraft] PR-6 issue when QRO
>>
>> Gregg,
>>
>> Unless you have changed the open frame relay in the SB-220, it will
>> take at least 15 ms to switch and be clear of the contact bounce. I
>> would suggest you change the stock relay for something faster.
>>
>> 73,
>> Don W3FPR
>>
>> On 4/29/2012 8:55 AM, Gregg Marco W6IZT wrote:
>>> I use my K3 on 6 meters with a concerted SB-220. When using the PR6
>>> connected to the KXV3 as intended and using the amp, the GaAs FET is
>>> destroyed immediately. My work around was to employ an external TR
>>> relay on the K3 to switch TX RX, connecting the PR6 to the RX side of
>>> the relay and to the RX input of the KXV3.Using this arrangement has
>>> worked fine for the past few years.
>>>
>>> With E skip season approaching I thought that I would try to resolve
>>> this problem and get rid of the extra RF plumbing.
>>>
>>> My initial thought was the TR relay in the amp might be too slow and
>>> RF was being reflected back into the K3 during the transition from TX
>>> to RX. After looking at the K3 block diagram I doubt that this is the
>>> case as the PR-6 should be switched out of the circuit well before
>>> any RF is present at the output.
>>>
>>> For reference the TR relays in the amp are spec'ed at 8 msec to
>>> switch and the K3 is set at 8 msec TX delay, which I believe is the
> default.
>>>
>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net Please help support this email
>> list: http://www.qsl.net/donate.html
>>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
>

Gregg Marco W6IZT

Re: PR-6 issue when QRO

It has me stumped too Joe.

The TR switch uses two SPDT Tyco/Schrack relays. Dick layed out the PC
board. He has used it in several amps that he has built. Is it possible that
one of the relays is dropping out early? Maybe.

Nothing else is connected to the PR6. I thought about the RX antennas, but
they were not connected to the PR6. My RX antennas are disconnected from the
K3 and grounded during TX using the key out as the control line.

-----Original Message-----
From: Joe Subich, W4TV [mailto:[hidden email]]
Sent: Sunday, April 29, 2012 4:06 PM
To: Gregg Marco W6IZT; Elecraft Reflector
Subject: Re: [Elecraft] PR-6 issue when QRO

> The TR relay has been replaced by a TR switch that Dick, K5AND
> designed that uses Schrack relays that are spec'd to switch in 8 msec.

Is the K5AND TR Switch design documented anywhere?

Does it use a single relay or multiple relays? Is there any chance that the
input replay is dropping out while the SB-200 is still making RF?

Do you have any separate receive antennas connected to the "bypass"
ports on the PR6? Do the receive antennas have a "front end saver"
inline?

Short of a problem elsewhere, I do not see how 6 meter RF from the amplifier
can get back through the K3 T/R switch, HPA and LPA to even get to the PR6.

73,

... Joe, W4TV

On 4/29/2012 11:56 AM, Gregg Marco W6IZT wrote:

> Joe:
>
> It is a 6m only amp. Yes, the K3 is set to bypass the PR6 when on HF.
> The TR relay has been replaced by a TR switch that Dick, K5AND
> designed that uses Schrack relays that are spec'd to switch in 8 msec.
>
> 73
> Gregg
>
> -----Original Message-----
> From: [hidden email]
> [mailto:[hidden email]] On Behalf Of Joe Subich,
> W4TV
> Sent: Sunday, April 29, 2012 11:34 AM
> To: [hidden email]
> Subject: Re: [Elecraft] PR-6 issue when QRO
>
>
> Greg,
>
> Is that SB-200 a "modified for 6 meters only" amplifier, one that has
> six meters added to the HF bands or is the problem happening when
> operating on HF bands?
>
> Is the K3/PR6 configured to bypass and turn the PR6 off when operating
> on HF?
>
> 73,
>
> ... Joe, W4TV
>
>
> On 4/29/2012 11:10 AM, Gregg Marco W6IZT wrote:
>> Don:
>>
>> I have replaced the open frame relay with Schrack relays
>>
>> 73
>> Gregg
>>
>> -----Original Message-----
>> From: Don Wilhelm [mailto:[hidden email]]
>> Sent: Sunday, April 29, 2012 10:12 AM
>> To: Gregg Marco W6IZT
>> Cc: 'elecraft'
>> Subject: Re: [Elecraft] PR-6 issue when QRO
>>
>> Gregg,
>>
>> Unless you have changed the open frame relay in the SB-220, it will
>> take at least 15 ms to switch and be clear of the contact bounce. I
>> would suggest you change the stock relay for something faster.
>>
>> 73,
>> Don W3FPR
>>
>> On 4/29/2012 8:55 AM, Gregg Marco W6IZT wrote:
>>> I use my K3 on 6 meters with a concerted SB-220. When using the PR6
>>> connected to the KXV3 as intended and using the amp, the GaAs FET is
>>> destroyed immediately. My work around was to employ an external TR
>>> relay on the K3 to switch TX RX, connecting the PR6 to the RX side
>>> of the relay and to the RX input of the KXV3.Using this arrangement
>>> has worked fine for the past few years.
>>>
>>> With E skip season approaching I thought that I would try to resolve
>>> this problem and get rid of the extra RF plumbing.
>>>
>>> My initial thought was the TR relay in the amp might be too slow and
>>> RF was being reflected back into the K3 during the transition from
>>> TX to RX. After looking at the K3 block diagram I doubt that this is
>>> the case as the PR-6 should be switched out of the circuit well
>>> before any RF is present at the output.
>>>
>>> For reference the TR relays in the amp are spec'ed at 8 msec to
>>> switch and the K3 is set at 8 msec TX delay, which I believe is the
> default.
>>>
>>
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>>
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>>
> ______________________________________________________________
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Phil Shepard

Elecraft SSB net announcement

In reply to this post by Phil Shepard

The weekly Elecraft SSB net will meet tomorrow (5/6/12) at 1800Z on 14.3035
MHz +/- QRM. I will be the net control station from Oregon. See you there.

73,

Phil, NS7P

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Phil Shepard

Elecraft SSB net announcement

In reply to this post by Phil Shepard

The weekly Elecraft SSB net will meet tomorrow (5/13/12) at 1800Z on 14.3035
MHz +/- QRM. I will be the net control station from Oregon. See you there.

73,

Phil, NS7P

______________________________________________________________
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Home: http://mailman.qth.net/mailman/listinfo/elecraft
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Post: mailto:[hidden email]

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Please help support this email list: http://www.qsl.net/donate.html

Phil Shepard

Elecraft SSB net announcement

The weekly Elecraft SSB net will meet tomorrow (5/20/12) at 1800Z on 14.3035
MHz +/- QRM. I will be the net control station from Oregon. See you there.

73,

Phil, NS7P

______________________________________________________________
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Help: http://mailman.qth.net/mmfaq.htm
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