ENERGY-ONIX PACKAGES
 MEDIUM POWER FM TRANSMITTERS
(1.5KW TO 10KW TRANSMITTER POWER OUTPUTS)

The FCC authorized power of an FM station is designated as EFFECTIVE RADIATED POWER (ERP).

ERP is a function of:

    A) Transmitter output power.
    B) Transmission line loss (type and length).
    C) Antenna power gain (number of bays).

Use the chart below to find the Energy-Onix transmitter/antenna combination appropriate to your needs. The LEGEND C-SERIES transmitters are completely solid state, and the ECO SERIES transmitters incorporate solid-state drivers and 1-tube grounded grid outputs.

Locate the desired ERP value on the chart, and then follow the row and column entries to find the optimum Energy-Onix transmitter and SWR FM3 antenna for your facility.

        Recommended for 3KW ERP

        Recommended for 6KW ERP

        Recommended for 25KW ERP

        Recommended for 50KW ERP

Energy-Onix Medium Power
Transmitter/Antenna Combinations
SWR
FM3 Series
Medium
Power
FM Antenna
LEGEND 1500C
LEGEND 2000C
LEGEND 3000C
LEGEND 4000C
LEGEND 5000C
LEGEND 10,000C
LEGEND 10,000C
LEGEND 10,000C
ECO-4
ECO-4
ECO-4
ECO-4
ECO-6
ECO-6
ECO-8
ECO-10
Up to
1.5KW
Transmitter
Pwr Output
UP TO
1.35KW
AIP*
Up to
2KW
Transmitter
Pwr Output
UP TO
1.80KW
AIP*
Up to
3KW
Transmitter
Pwr Output
UP TO
2.70KW
AIP*
Up to
4KW
Transmitter
Pwr Output
UP TO
3.60KW
AIP*
Up to
5KW
Transmitter
Pwr Output
UP TO
4.50KW
AIP*
Up to
6KW
Transmitter
Pwr Output
UP TO
5.40KW
AIP*
Up to
8KW
Transmitter
Pwr Output
UP TO
7.20KW
AIP*
Up to
10KW
Transmitter
Pwr Output
UP TO
9.00KW
AIP*
FM3/1
1-BAY
.46 PWR GAIN
UP TO
.621KW
ERP
UP TO
.828KW
ERP
UP TO
1.24KW
ERP
-----
-----
-----
-----
-----
FM3/2
2-BAY
1.0 PWR GAIN
UP TO
1.35KW
ERP
UP TO
1.80KW
ERP
UP TO
2.70KW
ERP
UP TO
3.60KW
ERP
UP TO
4.50KW
ERP
UP TO
5.40KW
ERP
-----
-----
FM3/3
3-BAY
1.5 PWR GAIN
UP TO
2.03KW
ERP
UP TO
2.70KW
ERP
UP TO
4.05KW
ERP
UP TO
5.40KW
ERP
UP TO
6.75KW
ERP
UP TO
8.10KW
ERP
UP TO
10.8KW
ERP
-----
FM3/4
4-BAY
2.1 PWR GAIN
UP TO
2.84KW
ERP
UP TO
3.78KW
ERP
UP TO
5.67KW
ERP
UP TO
7.56KW
ERP
UP TO
9.45KW
ERP
UP TO
11.3KW
ERP
UP TO
15.1KW
ERP
UP TO
18.9KW
ERP
FM3/5
5-BAY
2.7 PWR GAIN
UP TO
3.65KW
ERP
UP TO
4.86KW
ERP
UP TO
7.29KW
ERP
UP TO
9.72KW
ERP
UP TO
12.2KW
ERP
UP TO
14.6KW
ERP
UP TO
19.4KW
ERP
UP TO
24.3KW
ERP
FM3/6
6-BAY
3.2 PWR GAIN
UP TO
4.32KW
ERP
UP TO
5.76KW
ERP
UP TO
8.64KW
ERP
UP TO
11.5KW
ERP
UP TO
14.4KW
ERP
UP TO
17.3KW
ERP
UP TO
23.0KW
ERP
UP TO
28.8KW
ERP
FM3/7
7-BAY
3.8 PWR GAIN
UP TO
5.13KW
ERP
UP TO
6.84KW
ERP
UP TO
10.3KW
ERP
UP TO
13.7KW
ERP
UP TO
17.1KW
ERP
UP TO
20.5KW
ERP
UP TO
27.4KW
ERP
UP TO
34.2KW
ERP
FM3/8
8-BAY
4.3 PWR GAIN
UP TO
5.81KW
ERP
UP TO
7.74KW
ERP
UP TO
11.6KW
ERP
UP TO
15.5KW
ERP
UP TO
19.4KW
ERP
UP TO
23.2KW
ERP
UP TO
31.0KW
ERP
UP TO
38.7KW
ERP
FM3/10
10-BAY
5.6 PWR GAIN
UP TO
7.56KW
ERP
UP TO
10.1KW
ERP
UP TO
15.1KW
ERP
UP TO
20.2KW
ERP
UP TO
25.2KW
ERP
UP TO
30.2KW
ERP
UP TO
40.3KW
ERP
UP TO
50.4KW
ERP
FM3/12
12-BAY
6.7 PWR GAIN
UP TO
9.05KW
ERP
UP TO
12.1KW
ERP
UP TO
18.1KW
ERP
UP TO
24.1KW
ERP
UP TO
30.2KW
ERP
UP TO
36.2KW
ERP
UP TO
48.2KW
ERP
UP TO
60.3KW
ERP

*AIP – ANTENNA INPUT POWER is determined by the type and length of transmission line between transmitter and antenna. The figure given is based on a transmission line efficiency of 90%, which is a good ballpark figure for use in system planning. Your exact line efficiency figure will be determined by the actual facility configuration.

As may be seen from the chart, equivalent ERP values can be produced by:

      A) High transmitter output power/low antenna power gain.
      B) Low transmitter output power/high antenna power gain.
      C) Some combination in between.

Obviously, an antenna cannot "amplify", so how does a multi-bay antenna produce a higher ERP? The answer lies in consideration of the useful component of the antenna's radiation pattern. This "useful" elevation component is the radiation directed toward the horizon. (Anything above will be "Lost in Space"; anything below will have a "Close Encounter" with the ground.) A single bay antenna will produce (more or less) a "ball" of radiation, while a 12-bay antenna will produce a relatively narrow beam directed toward the horizon.

So why doesn't everyone use very high gain antennas? After all, with a high gain antenna, you can use a lower power (and less expensive) transmitter, as well as paying lower monthly electric bills. The downside is increased antenna size (and cost), increased tower height, and increased wind loading. Even if these limitations are acceptable, there is a further consideration.

Imagine a facility with a high antenna located within a populous area. If a high gain (narrow beam width) antenna is used, it is possible for the signal to "skip over" areas relatively close to the tower, resulting in significant gaps in coverage. (It is possible, as an extra cost option, to incorporate "beam tilt" in the antenna design to alleviate this problem.) On the other hand, a low transmitter power, high antenna gain installation could be ideal for a heavy duty tower located some distance from the high density population area.

The "ball of radiation" produced by a low gain antenna is sometimes the optimum choice, particularly for areas where multi-path (reflection) propagation is a problem and a narrow beam width is undesirable. The majority of installations use antennas of two to six bays.

Although 7/8" air dielectric coaxial cable is rated at over 6KW average power, we recommend using 1 5/8" transmission line for transmitter power outputs above 3KW.

FLEXWELL HCC78-50J 7/8" cable is priced at $8.01/foot and has an efficency of 91.8% per 100 ft.

FLEXWELL HCC158-50J 1 5/8" cable is priced at $17.20/foot and has an efficency of 95.4% per 100 ft.

All transmitters (except Legend 1500C and Legend 2000C) and the FM3 series antennas utilize 1 5/8" EIA flanges. Therefore, 7/8" cable installation will require two 1 5/8" to 7/8" reducers. The MYAT 201-064 reducer is priced at $200.00.

Transmission line must be pressurized with dry air or nitrogen to prevent moisture intrusion. In order for this to be accomplished, a gas barrier connector (with pressurization port) is installed at transmitter end of cable, and a gas pass connector is installed at the antenna input.

7/8" EIA
1 5/8" EIA
Gas Pass
$132.00
$268.00
Gas Barrier
$195.00
$309.00


Accessories required to complete cable installation include:

A) One HOISTING GRIP for every 200' of cable (vertical run): 7/8" - $43.50; 1 5/8" - $51.00

B) One HANGER KIT for every 30' of cable (vertical run): 7/8" - $41.00; 1 5/8" - $41.00

C) Three GROUNDING KITS – one near antenna input, one at bottom of tower, one at building entrance: 7/8" - $31.00; 1 5/8" - $33.00

D) One WALL FEED-THRU: 7/8" - $52.50; 1 5/8" - $75.00

E) One NITROGEN TANK REGULATOR KIT: $295.00

Prices are subject to Change. Please call Energy-Onix for the most up to date prices.

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Valatie,NY 12184
Phone 518.758.1690 FAX 518.758.1476
E-MAIL: info@energy-onix.com