VHF RF Preamp

Custom Products from Masters Communications

Miniature VHF RF Preamp
For Amateur Radio Two-Way Radio Applications

Model P220
Frequency range 220 - 225 MHz

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

Ordering instructions on bottom of page.

The P220 is an affordable alternative to high-cost preamplifiers.

It is rated for 11 dB of gain while maintaining a 2dB (or lower) noise figure.

Input return loss (match) is very respectable (>-18 dB) when tuned for maximum gain.

Output return loss is also very good - >-20 dB.

This product is mostly thru-hole for easy assembly. Surface mounted parts are pre-installed.

Price $25.00 each - in unassembled kit form.
$55.00 each - assembled, tested, and tuned for any frequency between 220 and 225 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 P220 Assembled & Tested photo.
(Click image to enlarge)

Description:
The P220 is a VHF 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 P220 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.

Unassembled kit or assembled and tested. Surface mount components pre-installed on kits.

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 - all surface mounted components are pre-installed.

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 - Use down arrow to make selection.

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 December 27, 2020, W3KKC All Rights Reserved!

	Power Source: +10 to +15 VDC @ 10mA.
	Unassembled kit or assembled and tested. Surface mount components pre-installed on kits.
	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 - all surface mounted components are pre-installed.