[ICOM] AmpSequencer, Switching Buffer semi-QSK device

[David J. Ring, Jr.]

> When using either the 775 or 765 with a Collins 30L-1 and other linears
> with a high current changeover relay, is it necessary to use an external
> relay device?
>
> I have heard that some of the newer transceivers will not tolerate the
> current in some of the older amplifiers.
>
> Thank you
>
> David, W3ST
> Publisher of the Collins Journal


David,

I just saw this wonderful product - it is a Amplifier Sequencer, it turns 
off any U/VHF mast mounted preamps, closes the amplier relays (it has a high 
enough rating on the buffer switch to handle most (if not all) old 
amplifiers), then it delays by 10 ms (adjustable) the signal to the 
transmitter from PTT (push-to-talk) line or the CW key.  It can be put in 
between a paddle OR a hand key.  It can be used for RTTY and will eliminate 
hot switching.

I just ordered one because I needed a buffer switching unit to switch my old 
National NCL-2000 amplifier.   This unit supplies "quasi-QSK" to the old 
amplifier - better than VOX not as good as PIN diodes.

For the price I think it is worth it. Just about $40.00 - shipping is world 
wide from Italy, USA and Brazil, circuit boards, and also chassis boxes.

The advertisement is in June QST p. 150.

There is much more information on the web - everything that could be
imagined - except the circuit diagram - and this is because the device is
patent pending.

Here is the web page:

http://netcertus.com/cgi-bin/netc/net.cgi?page=ampsequencer

There are links on the left side of each page showing what is on the web
site.

At the bottom is:  Contact Us.

If you click this, you will be taken to a web page where you can ask for
more information, or ask about ordering one of these units.

I got a very prompt response.

73

David N1EA


----- Original Message ----- 
From: "David Knepper" <cra at floodcity.net>
To: "ICOM Reflector" <icom at mailman.qth.net>
Sent: Sunday, May 22, 2005 9:48 PM
Subject: [ICOM] Assistance Needed


When using either the 775 or 765 with a Collins 30L-1 and other linears with
a high current changeover relay, is it necessary to use an external relay
device?

I have heard that some of the newer transceivers will not tolerate the
current in some of the older  amplifiers.

Thank you

David, W3ST
Publisher of the Collins Journal
Secretary to the Collins Radio Association
To Join the CRA go to www.collinsra.com
Nets:  3805 Khz, Monday/Wednesdays 8 PM EST and 14250 Khz Saturday, 12 Noon
EST