Re: [Flexradio] Flex 1500 and 100 Watt amplifier for sale:correction.

[Koos Du Plessis]

Hi all,

The add was perfectly clear to me.  Where could you ever expect to buy both 
these items for only $500?

There are no such things as bargains in this hobby and on these items.

Vy 73 de Koos
ZS6BFD

Sent from my iPhone

On 03 Sep 2013, at 4:52 AM, Burt  wrote:

> No one misread your ad, your ad was clear. You were offering a Flex 1500 AND 
> 100w amp for $500.
> It was not the readers fault, you made  the mistake as we all can at times. 
> Most don't blame others for their mistakes however.
> 
> 
> 
> From: Bill K 
> To: flexradio@flex-radio.biz 
> Sent: Monday, September 2, 2013 10:30 PM
> Subject: [Flexradio] Flex 1500 and 100 Watt amplifier for sale:correction.
> 
> 
> Several people have misread my ad for for a 1500 Flex and Superpacker 
> Amplifier. Each item can be bought separately for $500 or buy the pair for 
> $1000
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Re: [Flexradio] Using a 2nd Independent Receiver with the Flex 5000A

[Gary Smith]

Thanks guys for all the help. I'm going to attempt the splitter approach.
I'll do some serious testing to ensure I don't blow the 2nd receiver front
end.

Thanks again.
Gary - WB8BFW

-Original Message-
From: FlexRadio [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Gary
Smith
Sent: Monday, September 02, 2013 8:18 PM
To: flexradio@flex-radio.biz
Subject: [Flexradio] Using a 2nd Independent Receiver with the Flex 5000A

Is it possible to use a second (independent) receiver with the Flex 5000A on
the same antenna that the Flex is using?

If so, how would I configure it.
Any help is very much appreciated.

Gary - WB8BFW




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Re: [Flexradio] Using a 2nd Independent Receiver with the Flex 5000A

[Stu Phillips]

No.

Get a 3 dB splitter.. Configure the 5000 to use the RX1 IN/OUT loopŠ put
the 3 dB splitter in the RX loop, feed one side back to the 5000, the
other to your second radio.

You might want to use one of the TX relays to set your other receiver to
mute during transmitŠ

Other than that, you are good to go.  On HF, you will barely, if at all,
notice the impact of the 3 db splitter.  Half of the signal goes to each
output port (aka 3 dB loss relative to the input).

Stu K6TU

On 9/2/13 8:39 PM, "Gary Smith"  wrote:

>I'm sorry that I did not make my point clear. I'm talking a separate
>external receiver, such as an icon or Yaesu.
>The one reply suggested the need of a duplexer. That sounds like an
>expensive solution, maybe the only one?
>
>Gary - WB8BFW
>
>-Original Message-
>From: FlexRadio [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of
>Gary
>Smith
>Sent: Monday, September 02, 2013 8:18 PM
>To: flexradio@flex-radio.biz
>Subject: [Flexradio] Using a 2nd Independent Receiver with the Flex 5000A
>
>Is it possible to use a second (independent) receiver with the Flex 5000A
>on
>the same antenna that the Flex is using?
>
>If so, how would I configure it.
>
> 
>
>Any help is very much appreciated.
>
> 
>
>Gary - WB8BFW
>
> 
>
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Re: [Flexradio] Using a 2nd Independent Receiver with the Flex 5000A

[Gary Smith]

I'm sorry that I did not make my point clear. I'm talking a separate
external receiver, such as an icon or Yaesu.
The one reply suggested the need of a duplexer. That sounds like an
expensive solution, maybe the only one?

Gary - WB8BFW

-Original Message-
From: FlexRadio [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Gary
Smith
Sent: Monday, September 02, 2013 8:18 PM
To: flexradio@flex-radio.biz
Subject: [Flexradio] Using a 2nd Independent Receiver with the Flex 5000A

Is it possible to use a second (independent) receiver with the Flex 5000A on
the same antenna that the Flex is using?

If so, how would I configure it.

 

Any help is very much appreciated.

 

Gary - WB8BFW

 

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Re: [Flexradio] Using a 2nd Independent Receiver with the Flex 5000A

[Lee Mushel]

But always remember the tremendous power of the diversity features of the 
5000A which require two reasonably separated antennas.


Lee  K9WRU


- Original Message - 
From: "Paul" 

To: "'Gary Smith'" ; 
Sent: Monday, September 02, 2013 8:18 PM
Subject: Re: [Flexradio] Using a 2nd Independent Receiver with the Flex 
5000A





Yes. After installing RX2 you will be able to choose the antenna on the
antenna menu.
Then just choose "RX1 Tap" and the second receiver will be listening on 
the

same antenna.
You may want to also check "disable RX2 on TX1 transmit" so you're not 
TXing

into RX2

Paul Delaney - K6HR
http://k6hr.dyndns.org:8080


-Original Message-
From: FlexRadio [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of 
Gary

Smith
Sent: Monday, September 02, 2013 5:18 PM
To: flexradio@flex-radio.biz
Subject: [Flexradio] Using a 2nd Independent Receiver with the Flex 5000A

Is it possible to use a second (independent) receiver with the Flex 5000A 
on

the same antenna that the Flex is using?

If so, how would I configure it.



Any help is very much appreciated.



Gary - WB8BFW



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Re: [Flexradio] Flex 1500 and 100 Watt amplifier for sale:correction.

[Burt]

No one misread your ad, your ad was clear. You were offering a Flex 1500 AND 
100w amp for $500.
It was not the readers fault, you made  the mistake as we all can at times. 
Most don't blame others for their mistakes however.
 


 From: Bill K 
To: flexradio@flex-radio.biz 
Sent: Monday, September 2, 2013 10:30 PM
Subject: [Flexradio] Flex 1500 and 100 Watt amplifier for sale:correction.
  

Several people have misread my ad for for a 1500 Flex and Superpacker 
Amplifier. Each item can be bought separately for $500 or buy the pair for $1000
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Re: [Flexradio] Using a 2nd Independent Receiver with the Flex 5000A

[Drax Felton]

Or if you mean truly a separate radio like an icom or yaesu then you need a 
diplexer such as this:

http://www.smc-comms.com/hfm21_diplexer.php




Sent from my iPhone

On Sep 2, 2013, at 10:18 PM, "Paul"  wrote:

> 
> Yes. After installing RX2 you will be able to choose the antenna on the
> antenna menu.
> Then just choose "RX1 Tap" and the second receiver will be listening on the
> same antenna.
> You may want to also check "disable RX2 on TX1 transmit" so you're not TXing
> into RX2
> 
> Paul Delaney - K6HR
> http://k6hr.dyndns.org:8080
> 
> 
> -Original Message-
> From: FlexRadio [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Gary
> Smith
> Sent: Monday, September 02, 2013 5:18 PM
> To: flexradio@flex-radio.biz
> Subject: [Flexradio] Using a 2nd Independent Receiver with the Flex 5000A
> 
> Is it possible to use a second (independent) receiver with the Flex 5000A on
> the same antenna that the Flex is using?
> 
> If so, how would I configure it.
> 
> 
> 
> Any help is very much appreciated.
> 
> 
> 
> Gary - WB8BFW
> 
> 
> 
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> 
> 
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[Flexradio] Flex 1500 and 100 Watt amplifier for sale:correction.

[Bill K]

Several people have misread my ad for for a 1500 Flex and Superpacker 
Amplifier. Each item can be bought separately for $500 or buy the pair for $1000
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Re: [Flexradio] Using a 2nd Independent Receiver with the Flex 5000A

[Paul]

Yes. After installing RX2 you will be able to choose the antenna on the
antenna menu.
Then just choose "RX1 Tap" and the second receiver will be listening on the
same antenna.
You may want to also check "disable RX2 on TX1 transmit" so you're not TXing
into RX2

Paul Delaney - K6HR
http://k6hr.dyndns.org:8080
 
 
-Original Message-
From: FlexRadio [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Gary
Smith
Sent: Monday, September 02, 2013 5:18 PM
To: flexradio@flex-radio.biz
Subject: [Flexradio] Using a 2nd Independent Receiver with the Flex 5000A

Is it possible to use a second (independent) receiver with the Flex 5000A on
the same antenna that the Flex is using?

If so, how would I configure it.

 

Any help is very much appreciated.

 

Gary - WB8BFW

 

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[Flexradio] 1500 and THP HL45B

[amfone]

  Anyone every try the Tokyo High Power HL45B with the Flex 1500 and wonder if 
so what experience's you had? I'm  thinking of using the amp alone with the 
Flex but also to drive a larger amp like the Drake L7.


Thanks 73
Tim
WB8UHZ
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[Flexradio] Using a 2nd Independent Receiver with the Flex 5000A

[Gary Smith]

Is it possible to use a second (independent) receiver with the Flex 5000A on
the same antenna that the Flex is using?

If so, how would I configure it.

 

Any help is very much appreciated.

 

Gary - WB8BFW

 

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[Flexradio] For Sale Flex 1500 and Amplifier

[Bill K]

For sale Flex 1500 ,#1811-1477,includes USB and push to talk cable. $500 also 
HF Projects Super Packer V-2 100 Watt Amp. $500 Price includes free shipping. 
Pictures available. w...@hotmail.com. 
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Re: [Flexradio] TXOut Delay.

[manualman]

I've been using my Flex 5000 with a SB-200 and installed Harbach soft-key
for several years. Whatever is the default keying delay setting is what
I've been using and neither rig has coughed up any hair balls over the
past 5 years.

Pete, wa2cwa
http://www.manualman.com
 
On Mon, 2 Sep 2013 06:10:25 -0700 Steven Hess 
writes:
> I've been running 5 ms and seemed to have no problems there but am 
> cautious
> which is the reason for my inquiry.
> I have a Harbach Electronics Soft-Key installed in the SB 200 and 
> also am
> using a AmpKeyer in line as it provides a standby mode and I was 
> gifted it.
> I have noted the 50 ms and am trying that as it seems like an idea 
> that
> will be gentler on the 572b tubes.
> 
> 
> On Mon, Sep 2, 2013 at 7:01 AM, Lee Mushel  
> wrote:
> 
> > Interesting thread.   I suspect that the topic is simpler than 
> people
> > might want it to be.   When I started to use the Flex3000 with a 
> rather
> > heavily used SB200 some three years ago I wondered about the 
> possibility of
> > mixing tube and solid-state voltages and was told to "not worry 
> about it."
> >   But being a conservative person I bought a "Sunlight" isolation 
> relay box
> > (no longer available), never adjusted anything and have never had 
> any
> > problems. But then I've long felt that people tend to be overly 
> cautious
> > which can lead to wanting to be "taken care of."
> >
> > 73
> >
> > Lee  K9WRU


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[Flexradio] looking for internal tuner -5000a

[y...@aol.com]

Anyone in the group have a 5000a tuner they would sell?
73
dale wt4t
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Re: [Flexradio] TXOut Delay.

[Steven Hess]

Seeing as I am using two of these devices in series I am good to go here.

I can understand the relay closure and setting issue. My understanding was
the Grid voltage dropped when keyed? Or am I thinking of something else?

I am trying 50 ms. I am not seeing any real difference in how my rig
responds with the increased setting. I may try an even less aggressive
setting here.


On Mon, Sep 2, 2013 at 7:52 AM, Jordan Arndt  wrote:

> Page 9 of the Flex5k manual discusses the keying line limitations and
> shows an intermediate ckt to be used called the "Protective PTT circuit
> between TX1-3 and Amplifier".  The relay you use "external" to the Flex
> should handle whatever voltage/current parameters are required by your rig.
> If you have a -125Vdc line to be keyed, use a relay with contacts rated for
> that voltage or better. A 30-50ms delay should be fine...
>
> 73...Jordan VE6ZT
>
> - Original Message - From: "Jim Barber" 
> Cc: 
> Sent: Monday, September 02, 2013 8:18 AM
> Subject: Re: [Flexradio] TXOut Delay.
>
>
>  If you don't care about arcing the relay contacts or generating a burst
>> of nasty, broad signal  when you key up,
>> then of course you'd be right.
>>
>> If your transceiver could handle the switch voltage/current/inductive
>> spike of the amplifier relay key line,
>> you'd be right again. In your case, though, since the SB-200 uses a 120V
>> relay coil, I somehow doubt the F3K's
>> switching transistor would tolerate that for long without the isolation
>> box. Perhaps someone from Flex knows the actual spec.
>>
>> Not sure how "overly cautious" applies here?
>>
>> 73,
>> Jim N7CXI
>>
>> On 9/2/2013 7:01 AM, Lee Mushel wrote:
>>
>>> Interesting thread.   I suspect that the topic is simpler than people
>>> might want it to be.   When I started to use the Flex3000 with a rather
>>> heavily used SB200 some three years ago I wondered about the possibility of
>>> mixing tube and solid-state voltages and was told to "not worry about it."
>>>   But being a conservative person I bought a "Sunlight" isolation relay box
>>> (no longer available), never adjusted anything and have never had any
>>> problems. But then I've long felt that people tend to be overly cautious
>>> which can lead to wanting to be "taken care of."
>>>
>>> 73
>>>
>>> Lee  K9WRU
>>> - Original Message - From: "Jim Barber" 
>>> Cc: 
>>> Sent: Sunday, September 01, 2013 10:14 PM
>>> Subject: Re: [Flexradio] TXOut Delay.
>>>
>>>
>>>  50ms is probably around the minimum for an SB-200.

 It all depends on the relay(s). In the case of the SB-200 it's an old
 open-frame type, very slow. Amps advertised for "QSK" use often have vacuum
 relays, which can switch many times faster.

 If you're running SSB, keep in mind that hotswitching the antenna
 contacts is the major issue, but not the only one. Some amp designs (not
 the SB-200) have a separate relay for the tube bias, which is often
 buffered with a simple R/C network. The point is that you shouldn't put
 drive on the tube(s) before the operating bias has had time to switch from
 cut-off to operate. In the case of the SB-220 for example, the cutoff bias
 is set to a unnecessarily high voltage as a matter of convenience, which
 makes the situation worse.

 My .02,

 Jim N7CXI


 On 9/1/2013 8:22 PM, Steve Sterling wrote:

> Steven-- I was kinda waiting to see what others thought, but haven't
> seen any response in 24+ hours.
>
> I have mine set at 50ms.  That's a pretty reasonable time for power
> and antenna relays to pull in and get seated.
>
> I originally started at 100ms, but the delay was noticable-- not long,
> but you could kinda tell it was there. I can't tell 50ms at all, except a
> little on CW. I start getting faults in my amp with less than 20-25ms of
> transmit delay on 80 and 40 meters.  20 meters I could set it at 0ms and 
> it
> never faults. Go figure.
>
> Steve WA7DUH
>
> On 8/31/2013 7:52 AM, Steven Hess wrote:
>
>> I've got a SB 200 with a interface for proper keying from a modern
>> rig to
>> the relay installed.
>> What should I set the TXOut delay for to make sure the relays are
>> properly
>> closed before I pass RF to the amplifier? I've got it set for 7 In the
>> General Options tab of PowerSDR right now.
>>
>> Steven
>>
>>
>
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Re: [Flexradio] Is the Flex-Radio website down?

[Russ Hines]

Okay, the main website appears to be up and running the last 12+ hours 
or so, but the Support "Knowledge Base" and "Downloads" pages cough up a 
"server error."


And all I wanted to do was upgrade my PowerSDR. ;-(

73,
Russ
WB8ZCC


"Of liberty I would say that, in the whole plenitude of its
extent, it is unobstructed action according to our will. But
rightful liberty is unobstructed action according to our will
within limits drawn around us by the equal rights of others. I do
not add 'within the limits of the law,' because law is often but
the tyrant's will, and always so when it violates the right of an
individual." --Thomas Jefferson to Isaac H. Tiffany, 1819.

On 9/1/2013 12:47, Russ Hines wrote:

Not that, but could be a DNS server having problems.

Thanks, all, I'll assume it's not a local issue here.

73,
Russ
WB8ZCC


"Of liberty I would say that, in the whole plenitude of its
extent, it is unobstructed action according to our will. But
rightful liberty is unobstructed action according to our will
within limits drawn around us by the equal rights of others. I do
not add 'within the limits of the law,' because law is often but
the tyrant's will, and always so when it violates the right of an
individual." --Thomas Jefferson to Isaac H. Tiffany, 1819.

On 9/1/2013 12:31, Rich - W3ZJ wrote:

It seems to be down. I doubt they have changed their IP address so it
wouldn't be a DNS issue.

73, Rich - W3ZJ

Russ Hines wrote:

Is the site down, or broken DNS???

Having difficulty resolving http://www.flex-radio.com

Anyone else?

73,
Russ
WB8ZCC

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Re: [Flexradio] TXOut Delay.

[Jordan Arndt]

Page 9 of the Flex5k manual discusses the keying line limitations and shows 
an intermediate ckt to be used called the "Protective PTT circuit between 
TX1-3 and Amplifier".  The relay you use "external" to the Flex should 
handle whatever voltage/current parameters are required by your rig. If you 
have a -125Vdc line to be keyed, use a relay with contacts rated for that 
voltage or better. A 30-50ms delay should be fine...


73...Jordan VE6ZT

- Original Message - 
From: "Jim Barber" 

Cc: 
Sent: Monday, September 02, 2013 8:18 AM
Subject: Re: [Flexradio] TXOut Delay.


If you don't care about arcing the relay contacts or generating a burst of 
nasty, broad signal  when you key up,

then of course you'd be right.

If your transceiver could handle the switch voltage/current/inductive 
spike of the amplifier relay key line,
you'd be right again. In your case, though, since the SB-200 uses a 120V 
relay coil, I somehow doubt the F3K's
switching transistor would tolerate that for long without the isolation 
box. Perhaps someone from Flex knows the actual spec.


Not sure how "overly cautious" applies here?

73,
Jim N7CXI

On 9/2/2013 7:01 AM, Lee Mushel wrote:
Interesting thread.   I suspect that the topic is simpler than people 
might want it to be.   When I started to use the Flex3000 with a rather 
heavily used SB200 some three years ago I wondered about the possibility 
of mixing tube and solid-state voltages and was told to "not worry about 
it."   But being a conservative person I bought a "Sunlight" isolation 
relay box (no longer available), never adjusted anything and have never 
had any problems. But then I've long felt that people tend to be overly 
cautious which can lead to wanting to be "taken care of."


73

Lee  K9WRU
- Original Message - From: "Jim Barber" 
Cc: 
Sent: Sunday, September 01, 2013 10:14 PM
Subject: Re: [Flexradio] TXOut Delay.



50ms is probably around the minimum for an SB-200.

It all depends on the relay(s). In the case of the SB-200 it's an old 
open-frame type, very slow. Amps advertised for "QSK" use often have 
vacuum relays, which can switch many times faster.


If you're running SSB, keep in mind that hotswitching the antenna 
contacts is the major issue, but not the only one. Some amp designs (not 
the SB-200) have a separate relay for the tube bias, which is often 
buffered with a simple R/C network. The point is that you shouldn't put 
drive on the tube(s) before the operating bias has had time to switch 
from cut-off to operate. In the case of the SB-220 for example, the 
cutoff bias is set to a unnecessarily high voltage as a matter of 
convenience, which makes the situation worse.


My .02,

Jim N7CXI


On 9/1/2013 8:22 PM, Steve Sterling wrote:
Steven-- I was kinda waiting to see what others thought, but haven't 
seen any response in 24+ hours.


I have mine set at 50ms.  That's a pretty reasonable time for power and 
antenna relays to pull in and get seated.


I originally started at 100ms, but the delay was noticable-- not long, 
but you could kinda tell it was there. I can't tell 50ms at all, except 
a little on CW. I start getting faults in my amp with less than 20-25ms 
of transmit delay on 80 and 40 meters.  20 meters I could set it at 0ms 
and it never faults. Go figure.


Steve WA7DUH

On 8/31/2013 7:52 AM, Steven Hess wrote:
I've got a SB 200 with a interface for proper keying from a modern rig 
to

the relay installed.
What should I set the TXOut delay for to make sure the relays are 
properly

closed before I pass RF to the amplifier? I've got it set for 7 In the
General Options tab of PowerSDR right now.

Steven




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Re: [Flexradio] TXOut Delay.

[Jim Barber]

If you don't care about arcing the relay contacts or generating a burst 
of nasty, broad signal  when you key up,

then of course you'd be right.

If your transceiver could handle the switch voltage/current/inductive 
spike of the amplifier relay key line,
you'd be right again. In your case, though, since the SB-200 uses a 120V 
relay coil, I somehow doubt the F3K's
switching transistor would tolerate that for long without the isolation 
box. Perhaps someone from Flex knows the actual spec.


Not sure how "overly cautious" applies here?

73,
Jim N7CXI

On 9/2/2013 7:01 AM, Lee Mushel wrote:
Interesting thread.   I suspect that the topic is simpler than people 
might want it to be.   When I started to use the Flex3000 with a 
rather heavily used SB200 some three years ago I wondered about the 
possibility of mixing tube and solid-state voltages and was told to 
"not worry about it."   But being a conservative person I bought a 
"Sunlight" isolation relay box (no longer available), never adjusted 
anything and have never had any problems. But then I've long felt that 
people tend to be overly cautious which can lead to wanting to be 
"taken care of."


73

Lee  K9WRU
- Original Message - From: "Jim Barber" 
Cc: 
Sent: Sunday, September 01, 2013 10:14 PM
Subject: Re: [Flexradio] TXOut Delay.



50ms is probably around the minimum for an SB-200.

It all depends on the relay(s). In the case of the SB-200 it's an old 
open-frame type, very slow. Amps advertised for "QSK" use often have 
vacuum relays, which can switch many times faster.


If you're running SSB, keep in mind that hotswitching the antenna 
contacts is the major issue, but not the only one. Some amp designs 
(not the SB-200) have a separate relay for the tube bias, which is 
often buffered with a simple R/C network. The point is that you 
shouldn't put drive on the tube(s) before the operating bias has had 
time to switch from cut-off to operate. In the case of the SB-220 for 
example, the cutoff bias is set to a unnecessarily high voltage as a 
matter of convenience, which makes the situation worse.


My .02,

Jim N7CXI


On 9/1/2013 8:22 PM, Steve Sterling wrote:
Steven-- I was kinda waiting to see what others thought, but haven't 
seen any response in 24+ hours.


I have mine set at 50ms.  That's a pretty reasonable time for power 
and antenna relays to pull in and get seated.


I originally started at 100ms, but the delay was noticable-- not 
long, but you could kinda tell it was there. I can't tell 50ms at 
all, except a little on CW. I start getting faults in my amp with 
less than 20-25ms of transmit delay on 80 and 40 meters.  20 meters 
I could set it at 0ms and it never faults. Go figure.


Steve WA7DUH

On 8/31/2013 7:52 AM, Steven Hess wrote:
I've got a SB 200 with a interface for proper keying from a modern 
rig to

the relay installed.
What should I set the TXOut delay for to make sure the relays are 
properly

closed before I pass RF to the amplifier? I've got it set for 7 In the
General Options tab of PowerSDR right now.

Steven




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Re: [Flexradio] TXOut Delay.

[Steven Hess]

I've been running 5 ms and seemed to have no problems there but am cautious
which is the reason for my inquiry.
I have a Harbach Electronics Soft-Key installed in the SB 200 and also am
using a AmpKeyer in line as it provides a standby mode and I was gifted it.
I have noted the 50 ms and am trying that as it seems like an idea that
will be gentler on the 572b tubes.


On Mon, Sep 2, 2013 at 7:01 AM, Lee Mushel  wrote:

> Interesting thread.   I suspect that the topic is simpler than people
> might want it to be.   When I started to use the Flex3000 with a rather
> heavily used SB200 some three years ago I wondered about the possibility of
> mixing tube and solid-state voltages and was told to "not worry about it."
>   But being a conservative person I bought a "Sunlight" isolation relay box
> (no longer available), never adjusted anything and have never had any
> problems. But then I've long felt that people tend to be overly cautious
> which can lead to wanting to be "taken care of."
>
> 73
>
> Lee  K9WRU
> - Original Message - From: "Jim Barber" 
> Cc: 
> Sent: Sunday, September 01, 2013 10:14 PM
> Subject: Re: [Flexradio] TXOut Delay.
>
>
>  50ms is probably around the minimum for an SB-200.
>>
>> It all depends on the relay(s). In the case of the SB-200 it's an old
>> open-frame type, very slow. Amps advertised for "QSK" use often have vacuum
>> relays, which can switch many times faster.
>>
>> If you're running SSB, keep in mind that hotswitching the antenna
>> contacts is the major issue, but not the only one. Some amp designs (not
>> the SB-200) have a separate relay for the tube bias, which is often
>> buffered with a simple R/C network. The point is that you shouldn't put
>> drive on the tube(s) before the operating bias has had time to switch from
>> cut-off to operate. In the case of the SB-220 for example, the cutoff bias
>> is set to a unnecessarily high voltage as a matter of convenience, which
>> makes the situation worse.
>>
>> My .02,
>>
>> Jim N7CXI
>>
>>
>> On 9/1/2013 8:22 PM, Steve Sterling wrote:
>>
>>> Steven-- I was kinda waiting to see what others thought, but haven't
>>> seen any response in 24+ hours.
>>>
>>> I have mine set at 50ms.  That's a pretty reasonable time for power and
>>> antenna relays to pull in and get seated.
>>>
>>> I originally started at 100ms, but the delay was noticable-- not long,
>>> but you could kinda tell it was there. I can't tell 50ms at all, except a
>>> little on CW. I start getting faults in my amp with less than 20-25ms of
>>> transmit delay on 80 and 40 meters.  20 meters I could set it at 0ms and it
>>> never faults. Go figure.
>>>
>>> Steve WA7DUH
>>>
>>> On 8/31/2013 7:52 AM, Steven Hess wrote:
>>>
 I've got a SB 200 with a interface for proper keying from a modern rig
 to
 the relay installed.
 What should I set the TXOut delay for to make sure the relays are
 properly
 closed before I pass RF to the amplifier? I've got it set for 7 In the
 General Options tab of PowerSDR right now.

 Steven


>>>
>>> __**_
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>>> http://www.flexradio.com/
>>>
>>>
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>>
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>



-- 

Apply appropriate technology. Use what works without prejudice.
Steven L Hess ARS KC6KGE DM05gd22
Google Voice 661 769 6201 +SMS
openSUSE Linux 12.3 KDE
Known as FlameBait and The Sock Puppet of Doom.
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Re: [Flexradio] TXOut Delay.

[Lee Mushel]

Interesting thread.   I suspect that the topic is simpler than people might 
want it to be.   When I started to use the Flex3000 with a rather heavily 
used SB200 some three years ago I wondered about the possibility of mixing 
tube and solid-state voltages and was told to "not worry about it."   But 
being a conservative person I bought a "Sunlight" isolation relay box (no 
longer available), never adjusted anything and have never had any problems. 
But then I've long felt that people tend to be overly cautious which can 
lead to wanting to be "taken care of."


73

Lee  K9WRU
- Original Message - 
From: "Jim Barber" 

Cc: 
Sent: Sunday, September 01, 2013 10:14 PM
Subject: Re: [Flexradio] TXOut Delay.



50ms is probably around the minimum for an SB-200.

It all depends on the relay(s). In the case of the SB-200 it's an old 
open-frame type, very slow. Amps advertised for "QSK" use often have 
vacuum relays, which can switch many times faster.


If you're running SSB, keep in mind that hotswitching the antenna contacts 
is the major issue, but not the only one. Some amp designs (not the 
SB-200) have a separate relay for the tube bias, which is often buffered 
with a simple R/C network. The point is that you shouldn't put drive on 
the tube(s) before the operating bias has had time to switch from cut-off 
to operate. In the case of the SB-220 for example, the cutoff bias is set 
to a unnecessarily high voltage as a matter of convenience, which makes 
the situation worse.


My .02,

Jim N7CXI


On 9/1/2013 8:22 PM, Steve Sterling wrote:
Steven-- I was kinda waiting to see what others thought, but haven't seen 
any response in 24+ hours.


I have mine set at 50ms.  That's a pretty reasonable time for power and 
antenna relays to pull in and get seated.


I originally started at 100ms, but the delay was noticable-- not long, 
but you could kinda tell it was there. I can't tell 50ms at all, except a 
little on CW. I start getting faults in my amp with less than 20-25ms of 
transmit delay on 80 and 40 meters.  20 meters I could set it at 0ms and 
it never faults. Go figure.


Steve WA7DUH

On 8/31/2013 7:52 AM, Steven Hess wrote:
I've got a SB 200 with a interface for proper keying from a modern rig 
to

the relay installed.
What should I set the TXOut delay for to make sure the relays are 
properly

closed before I pass RF to the amplifier? I've got it set for 7 In the
General Options tab of PowerSDR right now.

Steven




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