Dear buyers from the USA. You don't have to worry about buying from me at all. The price you pay here is final and includes all import fees (customs, tax, etc.). The shipment will be delivered to you by USPS and I will handle all the formalities before shipping, so that you don't have any work or problems with it.

Description:

HF RX PREAMPLIFIER PCB – NORTON DESIGN • HIGH LINEARITY • LOW NOISE
Double-Sided PCB • Plated Through-Holes • Optimized for HF / Shortwave

Looking for a high-performance RX antenna preamplifier but don't want to spend a lot of money on a semi-professional commercial unit?

👉 Build it yourself! This PCB allows you to construct a high-quality Norton-design broadband HF receiver preamplifier with excellent linearity, low noise and strong-signal handling.

🔧 WHY A NORTON AMPLIFIER?

The Norton amplifier is an excellent topology for HF receiver applications, especially where strong signals and high dynamic range are important.

Very high linearity – ideal for crowded HF bands and contest operation
Low noise – helps improve weak signals without excessive degradation
Excellent large-signal handling / high IP3
Stable broadband characteristics
✔ Excellent for active receiving antennas, Beverage, K9AY, loops and DX antennas

Compared with simple JFET preamplifiers or basic MMIC modules, the Norton topology offers excellent performance for demanding HF receiving applications.


⚙️ PCB FEATURES

Double-sided RF PCB – 101 × 70 mm
Fully plated through-hole construction
✔ Professionally manufactured PCB with solder mask
✔ Optimized for a Norton broadband amplifier circuit
✔ RF-friendly PCB layout with low losses
✔ Mechanically robust construction
✔ Compatible with standard through-hole components
✔ Circuit schematic/documentation shown in the listing photos

⚠️ IMPORTANT – WHAT YOU ARE BUYING

You are buying the bare PCB only.

❌ No electronic components are included.
❌ No assembled amplifier is included.
❌ No enclosure, connectors or other hardware are included.

The PCB is supplied for you to build your own Norton HF preamplifier.


📡 TYPICAL APPLICATIONS

This PCB is ideal for:

HF / Shortwave / SWL reception
• Amateur radio receiving stations
Beverage antennas
K9AY antennas
• Waller-Flag antennas
• Mini-Whip antennas
• Active receiving loops
• Low-noise RX preamplifiers
• QRP receiving applications
• Preselector and filter projects
SDR receivers such as Airspy, Perseus, RSP, Hermes and Red Pitaya
• DX and weak-signal monitoring


🔍 EXAMPLES & MEASUREMENTS

Additional pictures in this listing show:

• An example of a completed amplifier
• Gain and linearity measurements
• The amplifier schematic / circuit diagram

This gives you a clear idea of the intended construction and expected performance.

Please note: The measured performance depends on the components used and the quality of the assembly.


📦 ITEM & SHIPPING

Included in this listing:

✔ 1 × bare double-sided HF preamplifier PCB

Condition: New, unused PCB from an uncompleted project.

Only the PCB shown in the listing is included.

I will, of course, combine shipping costs when you purchase multiple items from my listings.

Please check my other listings for additional HF and amateur radio equipment, PCBs and components.




Important information and terms and conditions: 

Even the postal services are about 99% reliable, sometimes could be something lost. I do recommend using signed and insured letter.

Yes, it costs more, but you can be sure, that you will get it or it can be fully refunded. I am sorry but I cannot be responsible for a normal

letter. I cannot manage worldwide postal services. I do always my best, but when I post you goods at the post office, my role is finished.

Do not write me, where is my ..... I want to refund .... etc. I am an honest man and if you don’t believe, please use signed and insured.

Especially if you are from Russia, Middle and the Far East, Italy and sometimes from the UK too. 

If you have selected economy shipping, without tracking. DO NOT OPEN THE CASE or ask for the refund!  You took a risk and I cannot do anything. 

I am giving you a possibility to get a cheap shipping, but it is out of my control if it will be delivered or not.  

During last time, there are several cases from Italy and Germany as well. It will lead to the strict requirement for signed and insured shipping ONLY (= more expensive for you). 

If you want to keep the low shipping fees in my auction, respect my rules, please. 

  

DO NOT BELIEVE eBay's estimated delivery time!

eBay does not know Czech or Worldwide postal system well. 

The delivery time is sometimes faster than proposed by eBay, but very often is slower (especially for overseas shipping and the UK included!!). 

I am trying to do my best, in 90% I am shipping first working day after the purchase, but the delivery time is out of my control. 

If you are in a hurry, ask me in advance and I will send you an offer for EMS shipping.   Thank you for the understanding and cooperation.