Clubs/Groups:

American Radio Relay League (ARRL)

Red Rose Repeater Assn. - Lancaster (W3RRR)

Keystone VHF Club - York (W3HZU

Harrisburg Radio Amateurs Club (W3UU)

Lebanon Valley Society of Radio Amateurs (K3LV)

Central PA SKYWARN

Lancaster County ARES

AMSAT

Equipment Manufacturers:

Yaesu

Icom

Kenwood

Alinco

Acom

Ten-Tec

FlexRadio

Xiegu

Baofeng

MFJ (includes Cushcraft, Ameritron, Hy-Gain, etc.)

Diamond Antennas

Comet Antennas

Alpha Antennas

Opek

Mosley Antennas

Polyphaser

Rohn Towers

Vendors:

Ham Radio Outlet

GigaParts

DX Engineering

Main Trading Company (MTC)

R & L Electronics

Universal Radio

Norm's Rotor Service

General:

DXNews.com

DX-World.net

QRZ.Com

QRZCQ

PA Repeater List

Repeater Maps by State

N1YZ's Net List

Echolink

AllStarLink

eHam.net

Amateur Radio Newsline

DX Zone

Regulatory:

FCC Part 97 Rules/Regulations

FCC Universal Licensing System (ULS)

POTA:

Parks On The Air (POTA)

POTA.app (Spotting)

Contesting:

PA QSO Party

ARRL Contest Portal

CQ World Wide DX Contest

WA7BNM Contest Calendar

DX Clusters:

DX Summit

Holy Cluster

Ham Alert

DX Heat

Propagation:

Propagation/Space Weather
VOACAP for HF

HF Activity Group