!! Protect your Transceiver !!

With this new Soft-Key who safely acts as an amplifier interface between your modern transceiver and the Heathkit SB-220/221 or HL-2200 Linear Power Amplifier. This unit is mounted inside the amplifier and transforms the 120VDC key switching, to approximately 0.7VDC at 1.5mA, without it you run the risk of severely damaging the keying circuit in your transceiver.

The switching transistor is in flat position, to install the module in a reduced space, (see pics).

Fully assembled, and tested, no needs other parts, it simply, just install, and solder wires (now the module is supplied with welded wires for fast install). Detailed schematic with parts list, PCB layout, and installation, provided by download in PDF format.

Size: 4.7 cm length x 4.5 cm width x 1.5 cm high.  

Compatible with the following Linear Amplifiers:

- HEATHKIT  SB-220/221/HL-2200 (Soft-Key powered by +120 VDC)

Remarks: It can only switch  Positive Voltages

Any doubts? check out the feedback from other buyers about this item.

==> Already sold several hundreds <==
!! 100% of buyers are satisfied !!

!!Best Price on eBay!!

Sent carefully packed via Priority international Flat Rate Envelope with Tracking.

I ship worldwide

E-MAIL If you have any question, don't hesitate to ask me.

THANKS for your interest on this item!

Note: since part of the price has been transferred to the shipping price in order to minimize the taxes that buyers have to pay, I am unable to offer discounts on grouped shipments.

I Shipping via Priority International Flat Rate Envelope, in order to provide a delivery time, not too long.

I sent no later than 5 working days after payment.

***France is not the next door***

Transit time can be up to 4 weeks, (!! Be patient !!).

I do the maximum in terms of product quality, shipping, and packaging, for everyone to be happy.

***I aspire to have 100% positive feedback***

So I would advise to "impatient people" do not buy if you do not agree with these simple principles,

!!! Remember purchase is not compulsory !!!

Thank you *** to take into account these observations ****

And most importantly, thank you very much for almost 4000 buyers were satisfied.