The NEMARC - N3OZT repeater, located in Jarrettsville, MD is on the air! This repeater is under development, so its usage is currently very light. You’ll find the N3OZT repeater on 145.270 (-600 offset, 114.8 PL).

146.595 FM simplex is still our most used 2 meter frequency. QSOs there are more often the result of planned (organized on our Discord chat group, etc.), instead of serving as our daily, Harford County intercom frequency, as it once did, but several of us still monitor there regularly and it is still the best place to find us on 2 meters!

To give you more insight into the coverage area of the N3OZT NEMARC repeater and the constraints to manage, here is a coverage area map of our repeater, and the other area repeaters on the same frequency.

Of course, the folks on these other repeaters don't want to hear our repeater any more than we want to hear theirs, so our power output and the antenna directivity of our repeater must be carefully managed. Bryan, N3OZT and Bob, N3UR have worked really hard, carefully calculating power output, feed line loss, antenna performance and many other factors, to maximize the coverage area of our machine, without interfering with our repeater neighbors.

This map shows why the coverage of our machine must be carefully managed, so as not to interfere with other repeaters.

Here are some repeaters that are easy to work from Harford County. All these repeaters are easy to bring up from my home QTH near Bel Air using my Diamond X510 MA antenna with its base at 25 feet. Almost all are full scale:

Frequency	County	Location	PL
145.270	Harford	NEMARC Jarrettsville	114.8
145.310	Lancaster	Lancaster	118.8
145.330	Harford	Towson	None
145.410	Carroll	Westminster	114.8*
145.670	Harford	Bel Air	77 East coast reflector node
146.480	Harford	EmComm Backup	Simplex
146.520	All	National Simplex	Simplex
146.595	Harford	NEMARC Area Wide	Simplex
146.670	Baltimore	Towson	107.2* Skywarn Bal, Car, How
146.745	Lancaster	Buck	114.8
146.760	Anne Arundel	Jessup	107.2
146.775	Harford	Hickory	146.2 ARES - RACES Har
146.805	Anne Arundel	Millersville	107.2
146.820	Wicomico	Salisbury	156.7
146.835	Prince Georges	Greenbelt	None
146.850	Cecil	Port Deposit	107.2 Skywarn Cec, Har
146.895	Carroll	Manchester	None
146.940	Queen Annes	Centerville	107.2
147.000	Montgomery	Ashton (minus offset)	156.7
147.030	Baltimore	Baltimore	156.7
147.075	Baltimore	Baltimore	107.2
147.105	Anne Arundel	Davidsonville	107.2
147.120	Harford	Bel Air	114.8
147.240	Baltimore	Baltimore	None
147.375	Kent	Worton	156.7
224.220	Harford	Abingdon	110.9
449.775	Harford	Hickory	162.2 ARES - RACES Har
449.825	Cecil	Port Deposit	107.2 Skywarn Cec, Har

* PL Listed, but not required on last check.

Many additional repeaters are listed here.

And other Maryland repeaters are on the TMARC site here.

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