UHF RF Preamp

Custom Products from Masters Communications

Miniature UHF RF Preamp
For Amateur or GMRS Two-Way Radio Applications

Model P440
Frequency range 420 - 470 MHz

"DOCS Page" Click Here for schematic, installation, and set-up instructions.

Ordering instructions on bottom of page.

The P440 is an affordable alternative to high-cost preamplifiers.

It is rated for 13 dB of gain while maintaining a 2dB (or lower) noise figure.

Input return loss is very respectable, >-16 dB when tuned for maximum gain.

Output return loss is >-10 dB when tuned for maximum gain.

This product is all thru-hole for easy assembly.

Price $25.00 each - in unassembled kit form.
$55.00 each - assembled, tested, and tuned for any frequency between 420 and 470 MHz. <

Shipping and handling is calculated at checkout for US and International orders.
First-Class shipping available to most locations worldwide, calculated at checkout.
PayPal accepted - order below.

Actual Size P440 photo.
(Click image to enlarge)

Description:
The P440 is a UHF RF (receiver) preamplifier intended to be placed in the RX path of a duplex radio or repeater. There is no bypass circuitry for the transmitter.

Click Here for P440 Product Documentation - schematic, installation, set-up instructions, and a link to the parts list.

Evaluation Article of the P144 and P440 preamps by Bob Meister WA1MIK.

Features:

Power Source: +10 to +15 VDC @ 10mA.

Kit or assembled and tested.

Circuit board will accommodate SMA female connectors (included).

RF is NOT switched for transmit. Damage will occur if accidental transmit power reaches the preamp!

Small size - fits easily in most radios.

Simple to hook up and set up.

90 day Limited Warranty. Repair available for units out of, or not covered under, warranty (my determination).

Mounts with double-sided foam tape or stand-off (not included).

Hookup is made to solder pads/holes for coax and power (not included).

Kit comes with thru-hole resistors and capacitors, and is fine for the first time builder.

If ordering "Assembled & Tested" please email me at the link below and tell me what frequency you'd like the preamp tuned to.

Ordering Information:
Quantity can be changed at PayPal after pressing the "Add to Cart" button.

Secure PayPal Ordering - Make Choice Carefully!

Unassembled Project Kit

Assembled and Tested
(please provide a note with the desired tuned frequency - email link below)

Shipping amount is calculated at checkout for shipping to most locations Worldwide.

If ordering "Assembled & Tested" please email me at the link below and tell me what frequency you'd like the preamp tuned to.

Email Kevin Custer for ordering information, order by check, and/or support of this exciting product.

Product of Masters Communications, all rights reserved.
Specifications may change without notice.
Images are property of Kevin Custer.
Board layout by Kevin Custer.
HTML May 21, 2018, W3KKC All Rights Reserved!

	Power Source: +10 to +15 VDC @ 10mA.
	Kit or assembled and tested.
	Circuit board will accommodate SMA female connectors (included).
	RF is NOT switched for transmit. Damage will occur if accidental transmit power reaches the preamp!
	Small size - fits easily in most radios.
	Simple to hook up and set up.
	90 day Limited Warranty. Repair available for units out of, or not covered under, warranty (my determination).
	Mounts with double-sided foam tape or stand-off (not included).
	Hookup is made to solder pads/holes for coax and power (not included).
	Kit comes with thru-hole resistors and capacitors, and is fine for the first time builder.