05 Sep 2010 - 02:31 GMT
Frequently Asked Questions

How do I know what delay I need?
The AMPSEQUENCER® comes factory set for a 20 millisecond delay, this is adequate for most settings.

It appears I need a longer setting how do I change it?
To increase the delay keep pressed the DASH paddle input to the AMPSEQUENCER® when you apply power to it (during Turn-ON).
To decrease the delay keep pressed the DOT paddle input to the AMPSEQUENCER® when you apply power to it (during Turn-ON).
A series of beeps will be heard on the AMPSEQUENCER® buzzer (or speaker) 1 beep = 10 milliseconds, 5 beeps = 80 milliseconds.

How do I determine exactly if the delay is enough?
The best way to know is to set a monitor scope on the output of the amplifier and adjust the AMPSEQUENCER® while sending 2 dots at 50 WPM followed by a pause.
The pause needs to be long enough to allow the amplifier relay to go fully back to the receive position.
Disconnect the Radio SEND cable from the radio to the AMPSEQUENCER®.
Start with minimum delay, and increase the delay until the first dot appears of the same length as the second one.
Another method is to send a sequence of Dot and pause at 50 WPM while monitoring the power output of the amplifier. The pause needs to be long enough to allow the amplifier relay to go fully back to the receive position.
Disconnect the Radio SEND cable from the radio to the AMPSEQUENCER®.
Start with minimum delay, and increment the delay until there is no increase in measured power.
Reconnect the Radio SEND cable from the radio to the AMPSEQUENCER®.

I don't notice any delay at all!
The delay involved is too small to be detected by most people until it reaches about 100 milliseconds.
If you have a monitor scope, you can measure the delay by triggering the scope with the KEY and measuring the time until the RF signal appears on the scope.

My amplifier keeps switching back to receive during normal transmission.
Make sure that you have a cable from your radio SEND (the signal used to key the amplifier) and the AMPSEQUENCER® SEND-IN. Make sure your radio is adjusted for semi-break-in and that a proper delay is adjusted.
Consult your transmitter manual on how to adjust the CW delay.
The AMPSEQUENCER® has been designed to be transparent to the operator, it relays on your transmitter CW-delay settings.

Can I use the AMPSEQUENCER® to switch the receiver?
YES! You can use the "PRE" signal which provides proper timings for external/MAST MOUNTED pre-amplifiers.

Which Radios can use the AMPSEQUENCER®?
Any radio can use the AMPSEQUENCER® since its driving input current requirements are in the order of microamps.

How do I know if the AMPSEQUENCER® can handle the relay of my amplifier?
Just measure the voltage of the amplifier control line. If the voltage is positive with respect to ground and is less than 40 Volts, you can use the AMPSEQUENCER® to control the amplifier!

The control line on my amplifier has a negative voltage what can I do?
You can still take advantage of the AMPSEQUENCER® just drive an external 12V micro-relay.
To do this connect one of the relay control coil inputs to +12V(or +13.8) the other to coil to the "AMPLIF" terminal on the AMPSEQUENCER®. Then use the normally open contacts of the relay by connecting one lead to ground and the other to your amplifier control line.


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