EPGA103+220 (VHF) Low-Noise - High Dynamic Range Preamp

Custom Products from Masters Communications

EPGA103+220
Enclosed VHF Low-Noise High Dynamic Range RF Preamplifier
for receive applications and duplex (repeater) service.

$145.00 built, tested, tuned - any available connector choice - shipping extra.
$14.50 USPS Priority Insured Shipping in the US.
Shipping on foreign orders are quoted by destination.

Ham 1.25 Meter
219 - 225 MHz.
Includes tuned input filtering for narrower operating frequency range.
Great for repeater service.

Click image for alternate view.

Masters Communications EPGA103+220 Preamp - Standard Features:
These standard features are included in the EPGA103+220 Preamp.

L/C tuned input circuit to help protect against out of band overload.
Uses a genuine MiniCircuits PGA103+ amplifier chip.
Very Low Noise - typically ~ 1.6 dB noise figure.
-3dB bandwidth - 25 MHz.
100% totally shielded aluminum box - properly machined for rugged / stable opertion.
12VDC operation at moderate current draw (7-15V acceptable - about 60-70 mA typical).
PGA103+ circuit runs at 3.5 volts - internally regulated (low-noise linear regulation).
P1dB = +17dBm at the device, +11 dBm at the output connector - because of output attenuator.
Available with BNC, UHF, or N Female Connectors (or a unique combination of any two - - can eliminate adapters)
Moderate Gain (held to about 14dB) - Less chance of receiver overload.
These preamps are NOT available as unassembled project kits - comes ready to install.
Power connection is made on the outside via DC Feedthru and ground lug (soldering preferred).
24" Siamese Black/Red power wire supplied - longer lenghts available, small fee applies.
$145.00 assembled, tested - with any connector option (BNC, UHF, N - any two).
Built to order and professionally tuned on a HP 8753ES Vector Network Analyzer.
Great input match so your duplexer notch tuning is not pulled out of whack.
Comes with performance graphs showing gain and input return loss (match) on your frequency.
Email Kevin to get one built for your repeater.

Individual Features:

Click on the model number for more information and ordering via email link.

Click button for email link -->

Frequency Range 219 - 225 MHz

Application Ham 1.25 Meter Band

Gain in dB 14 dB typical (+/- 1dB - can be customized)

Noise Figure in dB 1.5 dB typical (+/-.5dB)

Input Return Loss >20 dB (typically greater than -30dB)

Output Return Loss >20 dB

Overload Point 0 dBm

P1dB +11 dBm at output connector

DC Power Requirement 12VDC @ 60 - 100mA

Available RF Connectors
(any combination of two) BNC Female
UHF (SO239) Female
Type N Female

More Information:
Email Kevin Custer for ordering information and/or support of these exciting products.

Products of Masters Communications, all rights reserved.
Specifications may change without notice.
Images are property of Kevin Custer - W3KKC.
Board layout by Kevin Custer - W3KKC.
HTML August 21, 2025, W3KKC All Rights Reserved!

Click button for email link -->
Frequency Range	219 - 225 MHz
Application	Ham 1.25 Meter Band
Gain in dB	14 dB typical (+/- 1dB - can be customized)
Noise Figure in dB	1.5 dB typical (+/-.5dB)
Input Return Loss	>20 dB (typically greater than -30dB)
Output Return Loss	>20 dB
Overload Point	0 dBm
P1dB	+11 dBm at output connector
DC Power Requirement	12VDC @ 60 - 100mA
Available RF Connectors (any combination of two)	BNC Female UHF (SO239) Female Type N Female