Bird Technologies 61-89A-50 User Manual

YOU'RE HEARD, LOUD AND CLEAR.

Installation Instructions for

SBII 800 MHz Filter Conversion Kit

Part# 89-89A-05041-3/5/10/15/18/10-18/15-18

Manual Part Number

7-9424

8625 Industrial Parkway, Angola, NY 14006 Tel: 716-549-4700 Fax: 716-549-4772 sales@birdrf.com www.bird-technologies.com

Warranty

This warranty applies for one year from shipping date.

TX RX Systems Inc. warrants its products to be free from defe ct in material and w orkmanship at the time of sh ipmen t.

Our obligation under warranty is li mited to replacement or repa ir, at our option, of any such products that shall have been defective at the ti me of manu fact ure. TX RX Systems Inc. reserves the right to replace with merchandise of equal performance althou gh not i dentic al in e very way to that originally sold. TX RX Systems Inc. is not liable for dam- age caused by lightning or other natural disasters. No product will be accepted for repair or replacement without our prior written appr oval. The purc haser must prep ay all s hipping c harges o n ret ur ned p roducts. TX RX Systems Inc. shall in no event be liable for consequential damages, installa tio n costs or expense of a ny nature r esulting f rom the purchase or use of products , whet her or not the y are used in ac cordan ce wi th instruction s . This w arran ty is in li eu of all other warranties, either expressed or implied, inclu ding any implied war ranty or merc hantability of fitness. No representative is authorized to assume for TX RX Systems Inc. any other liability or warranty than set forth above in connection with our products or services.

TERMS AND CONDITIONS OF SALE

PRICES AND TERMS:

Prices are FOB seller’s plant in Angola, NY domestic packaging only, and are subject to change without notice. Federal, State and local sales or excise taxes are not included in prices. When Net 30 terms are applicable, payment is due within 30 days of invoice date. All orders are subject to a $100.00 net minimum.

QUOTATIONS:

Only written quotations are valid.

ACCEPTANCE OF ORDERS:

Acceptance of orders is valid only when so acknowledged in writing by the seller.

SHIPPING:

Unless otherwise agreed at the time the order is placed, seller reserves the right to make partial shipments for which payment shall be made in accordance with seller’s stated terms. Shipments are made with transportation charges collect unless otherwise specified by the buyer. Seller’s best judgement will be used in routing, except that buyer’s routing is used where practicable. The seller is not responsible for selection of most economical or timeliest routing.

CLAIMS:

All claims for damage or loss in transit must be made promptly by the buyer against the carrier. All claims for shortages must be made within 30 days after date of shipment of material from the seller’s plant.

SPECIFICATION CHANGES OR MODIFICATIONS:

All designs and specifications of seller’s products are subject to change without notice provided the changes or modifications do not affect performance.

RETURN MATERIAL:

Product or material may be returned for credit only after written authorization from the seller, as to which seller shall have sole discretion. In the event of such authorization, credit given shall not exceed 80 percent of the original purchase. In no case will Seller authorize return of material more than 90 days after shipment from Seller’s plant. Credit for returned material is issued by the Seller only to the original purchaser.

ORDER CANCELLATION OR ALTERATION:

Cancellation or alteration of acknowledged orders by the buyer will be accepted only on terms that protect the seller against loss.

NON WARRANTY REPAIRS AND RETURN WORK:

Consult seller’s plant for pricing. Buyer must prepay all transportation charges to seller’s plant. Standard shipping policy set forth above shall apply with respect to return shipment from TX RX Systems Inc. to buyer.

DISCLAIMER

Product part numbering in photographs and drawings is accurate at time of printing. Part number labels on TX RX products supersede part numbers given within this manual. Information is subject to change without notice.

Bird Technologies Group TX RX Systems Inc.

Manual Part Number 7-9424

First Printing: July 2006

Version Number Version Date

1 07/24/06

Symbols Commonly Used

WARNING

CAUTION or ATTENTION

High Voltage

Use Safety Glasses

ESD Elecrostatic Discharge

Hot Surface

Electrical Shock Hazard

NOTE

Important Information

Bird Technologies Group TX RX Systems Inc.

GENERAL DESCRIPTION

These instructions are for rebanding 800 Mhz Signal Booster II systems in the field. Caution should be taken not to drop the filters or sharply bump the tuning rods located on the top of the filters, doing so could result in de-tuning of the filters. The conversion process consists of replacing the original filters with new ones, adding a signal sampler if required, replacing the Tee-connector as well as several critical length cables. If there are any questions or concerns regarding the installation of this rebanding kit, please contact the customer service department at (716) 549-4700 extension 5044.

Types of 800 MHz SB II Re-banding kits

There are two types of rebanding kits available for the 800 MHz SB II system. Which type of kit you use will depend on whether your unit originally shipped from the factory with 18 MHz bandwidth duplexer assemblies (called 18 MHz systems) or with either 3/5/10/15 MHz bandwidth preselectors (called Non-18 MHz systems). The correct type of rebanding kit to use for your particular SB II system will be determined by the TXRX Sales Department at the time you place your order for the re-banding kit.

Procedure for Non-18 MHz Systems

Re-banding kits for systems that originally left the factory as Non-18 MHz systems will consist of replacement filters which have the new desired bandwidth, new tee-connectors, and several criti-

cal length cables. The filters are pre-tuned at the factory so the position of the tuning rods should not be changed. The conversion process consists of simply replacing the old filters, tee-connectors and cables with the new ones. A simplified block diagram for a Non-18 MHz SB II system is shown in Figure 1. The parts to be swapped out are indicated.

All work should be performed by a qualified electronics technician familiar with the communications system. Refer to the system drawings at the back of this manual as a guide to the correct placement of assemblies and cables. Follow the instructions listed below in a step-by-step fashion.

1) Open the signal booster enclosure and turn OFF the AC power. Disconnect or turn OFF any battery back-up DC input.

2) Disconnect three cables from the two filters on the right side of the cabinet. Disconnect the cables at the filter. Two of cables run to a teeconnector and one of the cables runs to the card cage.

3) Disconnect the signal sampler from the filter. The right side filters should be ready for removal at this point.

4) Disconnect three cables from the two filters on the left side of the cabinet. Disconnect the

Signal

To

Cabinet

Connector

Sampler

Filter Filter

Replace Filters,

Cables and Tees

Filter Filter

Test Por t

Amp

Circulator

Amp

Test Por t

Signal

Sampler

Replace Filters,

Cables and Tees

Figure 1: Simplified block diagram of the Non-18 MHz SB II system.

TXRX Systems Inc. Manual 7-9424-1 07/24/06 Page 1

To

Cabinet

Connector

cables at the filter. Two of cables run to a teeconnector and one of the cables runs to the card cage.

7) Install the replacement filters in reverse order making sure that the mounting plates are firmly attached to the cabinet.

Rebanding 3 MHz systems. SB II

NOTE

filter is mounted horizontally at the top of the cabinet. If you are rebanding a 3 MHz system to a higher bandwidth system then the extra filter will be removed permanently. Disconnect and discard the cable between the left side preselector and the extra filter.

5) Disconnect the signal sampler from the left side filter. The two left side filters should be ready for removal at this point.

6) Remove the screws which hold the filter mounting plates to the cabinet mounting panel and remove the filter assemblies from the cabinet. Use care when removing the filters so as not to damage any of the cables that are dangling in the cabinet.

NOTE

systems with an original 3 MHz bandwidth use an extra filter in series with the preselector on the left side of the cabinet. This extra

Rebanding 3 MHz systems. The extra filter should be removed from the cabinet first to provide additional room to maneuver the remaining filters out of the cabinet.

8) Reconnect three cables to the two filters on the right side of the cabinet. Reconnect the cables at the filter. Two of the cables run to a tee-connector and one of the cables runs to the card cage.

9) Reconnect the signal sampler to the right side filter.

10) Reconnect three cables to the two filters on the

left side of the cabinet. Reconnect the cables at the filter. Two of the cables run to a tee-connector and one of the cables runs to the card cage.

11) Reconnect the signal sampler to the left side

filter.

12) Verify that all filters and cables have been rein-

stalled properly, the booster should look exactly as it did before installing the rebanding kit.

13) Energize the booster and verify correct opera-

tion.

Circulator

Amp

To

Cabinet

Duplexer

Connector

Signal

Sampler

To

Duplexer

Cabinet

Connector

Amp

Figure 2: Simplified block diagram of the 18 MHZ SB II system.

TXRX Systems Inc. Manual 7-9424-1 07/24/06 Page 2

Circulator

Procedure for 18 MHz Systems

Re-banding kits for systems that originally left the factory as 18 MHz systems will consist of replacement filters which have the new desired bandwidth, new tee-connectors, several critical length cables, as well as a signal sampler. The filters are pretuned at the factory so the position of the tuning rods should not be changed. The conversion process consists of simply replacing the old filters (duplexer assemblies) with new filters, adding teeconnectors, cables, and signal samplers. In addition, the circulators will be attached to the cabinet mounting plate instead of the duplexer assemblies. A simplified block diagram for a 18 MHz SB II system is shown in Figure 2. Note that the original duplexer assembly has the tee-connector, critical length cables, and signal sampler built-in. The rebanding kit includes these parts as individual assemblies.

All work should be performed by a qualified electronics technician familiar with the communications system. Refer to the system drawings at the back of this manual as a guide to the correct placement of assemblies and cables. Follow the instructions listed below in a step-by-step fashion.

7) Install the tee-connectors and associated cables to the bottom connectors on the right and left side filters. Refer to the appropriate system drawing in the rear of this manual to make sure you have the correct cables going to the correct ports. These are length sensitive cables so it is important to connect them correctly. Install the 2 thru-hole connectors at the bottom of the cabinet.

8) Attach the card cage to the right and left filters with the supplied cables.

9) Attach the signal samplers to the filters as shown in the drawing.

10) Install the two circulators on the cabinet mount-

ing plate as shown in the drawing.

11) Install cables from the circulators to the power

amps and from the circulators to the signal samplers.

12) Verify that all filters and cables have been

installed properly. The booster should now look like the system drawing.

1) Open the signal booster enclosure and turn OFF the AC power. Disconnect or turn OFF any battery back-up DC input.

2) Disconnect and discard the 3 cables connected to the right and left side duplexer assembly. Including the thru-hole connectors at the bottom of the cabinet.

3) Disconnect and discard the remaining cable connected to the right and left side circulators.

4) Remove the mounting screws for the right and left side duplexer assemblies and remove them, with the attached circulators from the cabinet. Use care when removing the duplexer assemblies so as not to damage any of the cables that are still in the cabinet.

5) Remove the circulators from the duplexer assemblies, they will be re-used.

6) Install the right and left side replacement filters (two on each side) making sure that the mounting plates are firmly attached to the cabinet.

13) Energize the booster and verify correct operation.

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2 - PLACES, EA. MTD.

WITH (2) 8 - 32 x 5/8"

#8 WASHER No. 8-20393

AND (2) #8 SPLIT

WASHERS No. 8-20394

HANDLE No. 8-20358

B.H.M.S. No. 8-6757, (2)

#8 SPLIT

WASHER

Output

3-20543

Input

4 - 40 x 1/4" P.H.M.S.

PRESELECTOR No. 3-12975,

MTD. TO MT. BRACKET

PART No. 1-20382 WITH (3)

No. 8-7370 & THEN MTD. TO

3-20544

WITH (14) 6 - 32 x 1/2"

POWER AMP ASS'Y.

PART No. 3-20028, MTD.

PANEL WITH (4) 6 - 32 x 3/8"

B.H.M.S. PART No. 8-6001

B.H.M.S. No. 8-6727 &

(14) #6 SPLIT WASHERS

PART No. 8-6750

PRESELECTOR No. 3-12975,

MTD. TO MT. BRACKET

RF IN

3-19961

RF IN

4 - 40 x 1/4" P.H.M.S.

PART No. 1-20381 WITH (3)

No. 8-7370 & THEN MTD. TO

PANEL WITH (5) 6 - 32 x 3/8"

B.H.M.S. PART No. 8-6001

CARD CAGE SUB- ASS'Y.

PART No. 3-21182, MTD.

3-19960

PART No. 3-19576

MID LEVEL AMP

RF OUT

STATUS

PART No. 3-20208

RF OUT

STATUS

ATTENUATOR

DOWNLINK OLC

INC.

SYSTEMS

TX RX

ANGOLA, N. Y. 14006

8625 INDUSTRIAL PARKWAY

WITH (14) 6 - 32 x 3/8"

P.H.M.S. No. 8-18492 &

(14) #6 SPLIT WASHER

PART No. 8-6750

*SEE DETAIL 'D' ON

PAGE 2

3-20036

UPLINK OLC

KC

SM

KAS

5-24-05

3-21-06

11-28-05

SCALE: 1" = 2"

#23099

#A23172

#A23257

Change No.

A

B

C

Rev. Date Initiator

A MEMBER OF BIRD TECHNOLOGIES GROUP

TEE CONNECTOR

PART No. 8-5855

3-0489

on Page 2

See Detail 'E'

.XX ± .01

.XXX ± .005

.XXXX ± .0005

TOLERANCES, UNLESS

OTHERWISE SPECIFIED

2 - PLACES

POWER JUNCTION BOX

PART No. 3-20197, MTD.

3-7310

ANGLES ± 1°

FILLETS .005 − .040

PLATING OR COATING.

80 FINISH ALL OVER.

DIMENSIONS APPLY AFTER

BREAK ALL EDGES .005 MIN.

ALL DIMENSIONS ARE IN INCHES.

ALL PARTS TO BE FREE OF BURRS.

WITH (2) 10 - 32 x 3/8"

*SEE DETAIL 'E' ON

PAGE 2

P.H.M.S. No. 8-6369 &

(2) #10 SPLIT WASHER

PART No. 8-6163

3-15515

AC In

5-24-05

BCW

Engineered By:

Designed By:

5-24-05

5-25-05

BW

KAS

Detailed By:

Drawn By:

SUPPLIED WITH

HARDWARE

ON PAGE 2.

*SEE DETAIL ' C'

UpLink In

HOLE COVER

EMI/RFI FILTER

PART No. 8-20847, MTD.

DIAGRAM FOR

SIGNAL BOOSTER II

ASSEMBLY & CABLING

Title:

Checked By:

ENCLOSURE.

DownLin k Out

ENCLOSURE

SUPPLIED WITH

2 - PLACES

WITH (2) 8 - 32 x 3/8"

T.H.M.S. No. 8-18254 &

(2) 8 - 32 KEPNUTS

PART No. 8-6017

*SEE DE TAIL ' F' ON

C

Rev.

(Page 1 of 2)

3-20405

61-89A-50-C10-(XX)

Drawing No.

SEE 6-20 405 FOR SPECIFICATION S

PAGE 2

ARE SUPPLIED WITH ENC.

MOUNT PANEL No. 1-20225

MTD. WITH (8) FULLY

THREADED 10 - 32 x 7/16"

FLAT HEAD S.H.C.S.

(TX RX No. 8-20449) WHICH

TO PANEL WITH (3) 4 - 40 x 5/16"

800-900 MHz ISOLATOR No. 8-20113

2 - PLACES, EA. MTD. TO BRACKET

No. 1-20086 WITH (2) m2 x.4X 6mm

P.H.M.S. No. 8-20210 & THEN MTD.

P.H.M.S. No. 8-6154

ENCLOSURE

PART No. 1-20164 (-G1)

(PAINTED STEEL)

PART No. 1-20372 (-G2)

(STAINLESS STEEL)

3-20578

PART No. 3-19804

FACEPLATE ASS'Y.

PART No. 3-20208

3-20544

Output

Input

2 - PLACES

SAMPLER ASS'Y.

PART No. 3-3060

RF IN

ATTENUATOR

RF OUT

3-19961

PART No. 3-19576

RF OUT

MID LEVEL AMP

STATUS

DL PA

STATUS

12v UL PA

24v

3-20578

3-19960

Red & Blac k Wires

Blk Red

Cancel

3-20035

Enter

STRAIN RELIEF

3-20037

No. 8-20111

Brown

N

Orange Green Brown Blue Yellow White

3-0489

3-20034

3-7310

3-20869

Blue

3-20868

CAPACITIVE FILTER

PART No. 3-20989, MTD.

WITH (1) 4 - 40 x 1/4"

B.H.M.S. No. 8-7438

PAGE 2

*SEE DETAIL 'A' ON

2-POSITION TERMINAL

WITH (1) 4 - 40 x 3/4"

STRIP No. 8-19999, MTD.

Black

Red

Grn/Ylw

+SFG+V -V -S L

6-POSITION TERMINAL

P.H.M.S. No. 8-6721

STRIP No. 8-20000, MTD.

WITH (3) 4 - 40 x 3/4"

P.H.M.S. No. 8-6721

FLAT WASHER

PART No. 1-2743

2 - PLACES

3-15515

3-20543

MTD. TO MT. BRACKET

4 - 40 x 1/4" P.H.M.S.

No. 8-7370 & THEN MTD. TO

PRESELECTOR No. 3-12975,

PART No. 1-20381 WITH (3)

POWER AMP ASS'Y.

B.H.M.S. PART No. 8-6001

PANEL WITH (5) 6 - 32 x 3/8"

PART No. 3-19787, MTD.

WITH (14) 6 - 32 x 1/2"

B.H.M.S. No. 8-6727 &

(14) #6 SPLIT WASHERS

PART No. 8-6750

PRESELECTOR No. 3-12975,

MTD. TO MT. BRACKET

PART No. 1-20382 WITH (3)

4 - 40 x 1/4" P.H.M.S.

No. 8-7370 & THEN MTD. TO

PANEL WITH (4) 6 - 32 x 3/8"

B.H.M.S. PART No. 8-6001

4-WAY BACKED MT.

WITH WIRE TIE

PART No. 8-6322

PART No. 8-6112

POWER SUPPLY MODULE

PART No. 8-20667, MTD. TO

MT. BRACKET No. 1-20673

WITH (3) M4 x 8mm P.H.M.S.

No. 8-18530 & THEN MTD. TO

PANEL WITH (2) 6 - 32 x 3/8"

P.H.M.S. No. 8-18492 & (2)

#6 SPLIT WASHERS No. 8-6750

GROUNDING STRAP No. 8-20120

' ON PAGE 2

USING H ARDWARE SUPPL IED

*SEE DETAIL 'B

STUD ON ENCLOSURE & DOOR

WITH ENCLOSURE

TO BE ATTACHED TO GROUND

DownLin k In

2 - PLACES

LOCKWASHER

PART No. 8-6791

UpLink Out

TXRX Systems Inc. Manual 7-9424-1 07/24/06 Page 12

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Power Ratio and Voltage Ratio to Decibel

Conversion Chart

Loss or Gain Power Ratio Voltage Ratio

+9.1 dB 8.128 2.851

-9.1 dB 0.123 0.351

- dB +- dB +

Voltage

Ratio

1 1 0 1 1

0.989 0.977 0.1 1.012 1.023

0.977 0.955 0.2 1.023 1.047

0.966 0.933 0.3 1.035 1.072

0.955 0.912 0.4 1.047 1.096

0.944 0.891 0.5 1.059 1.122

0.933 0.871 0.6 1.072 1.148

0.923 0.851 0.7 1.084 1.175

0.912 0.832 0.8 1.096 1.202

0.902 0.813 0.9 1.109 1.23

0.891 0.794 1 1.122 1.259

0.881 0.776 1.1 1.135 1.288

0.871 0.759 1.2 1.148 1.318

0.861 0.741 1.3 1.161 1.349

0.851 0.724 1.4 1.175 1.38

0.841 0.708 1.5 1.189 1.413

0.832 0.692 1.6 1.202 1.445

0.822 0.676 1.7 1.216 1.479

0.813 0.661 1.8 1.23 1.514

0.804 0.646 1.9 1.245 1.549

0.794 0.631 2 1.259 1.585

0.785 0.617 2.1 1.274 1.622

0.776 0.603 2.2 1.288 1.66

0.767 0.589 2.3 1.303 1.698

0.759 0.575 2.4 1.318 1.738

0.75 0.562 2.5 1.334 1.778

0.741 0.55 2.6 1.349 1.82

0.733 0.537 2.7 1.365 1.862

0.724 0.525 2.8 1.38 1.905

0.716 0.513 2.9 1.396 1.95

0.708 0.501 3 1.413 1.995

0.7 0.49 3.1 1.429 2.042

0.692 0.479 3.2 1.445 2.089

0.684 0.468 3.3 1.462 2.138

0.676 0.457 3.4 1.479 2.188

0.668 0.447 3.5 1.496 2.239

0.661 0.437 3.6 1.514 2.291

0.653 0.427 3.7 1.531 2.344

0.646 0.417 3.8 1.549 2.399

0.638 0.407 3.9 1.567 2.455

0.631 0.398 4 1.585 2.512

0.624 0.389 4.1 1.603 2.57

0.617 0.38 4.2 1.622 2.63

0.61 0.372 4.3 1.641 2.692

0.603 0.363 4.4 1.66 2.754

0.596 0.355 4.5 1.679 2.818

0.589 0.347 4.6 1.698 2.884

0.582 0.339 4.7 1.718 2.951

0.575 0.331 4.8 1.738 3.02

0.569 0.324 4.9 1.758 3.09

Power

Ratio

dB

Voltage

Ratio

Power

Ratio

Voltage

Ratio

0.562 0.316 5 1.778 3.162

0.556 0.309 5.1 1.799 3.236

0.55 0.302 5.2 1.82 3.311

0.543 0.295 5.3 1.841 3.388

0.537 0.288 5.4 1.862 3.467

0.531 0.282 5.5 1.884 3.548

0.525 0.275 5.6 1.905 3.631

0.519 0.269 5.7 1.928 3.715

0.513 0.263 5.8 1.95 3.802

0.507 0.257 5.9 1.972 3.89

0.501 0.251 6 1.995 3.981

0.496 0.246 6.1 2.018 4.074

0.49 0.24 6.2 2.042 4.169

0.484 0.234 6.3 2.065 4.266

0.479 0.229 6.4 2.089 4.365

0.473 0.224 6.5 2.113 4.467

0.468 0.219 6.6 2.138 4.571

0.462 0.214 6.7 2.163 4.677

0.457 0.209 6.8 2.188 4.786

0.452 0.204 6.9 2.213 4.898

0.447 0.2 7 2.239 5.012

0.442 0.195 7.1 2.265 5.129

0.437 0.191 7.2 2.291 5.248

0.432 0.186 7.3 2.317 5.37

0.427 0.182 7.4 2.344 5.495

0.422 0.178 7.5 2.371 5.623

0.417 0.174 7.6 2.399 5.754

0.412 0.17 7.7 2.427 5.888

0.407 0.166 7.8 2.455 6.026

0.403 0.162 7.9 2.483 6.166

0.398 0.159 8 2.512 6.31

0.394 0.155 8.1 2.541 6.457

0.389 0.151 8.2 2.57 6.607

0.385 0.148 8.3 2.6 6.761

0.38 0.145 8.4 2.63 6.918

0.376 0.141 8.5 2.661 7.079

0.372 0.138 8.6 2.692 7.244

0.367 0.135 8.7 2.723 7.413

0.363 0.132 8.8 2.754 7.586

0.359 0.129 8.9 2.786 7.762

0.355 0.126 9 2.818 7.943

0.351 0.123 9.1 2.851 8.128

0.347 0.12 9.2 2.884 8.318

0.343 0.118 9.3 2.917 8.511

0.339 0.115 9.4 2.951 8.71

0.335 0.112 9.5 2.985 8.913

0.331 0.11 9.6 3.02 9.12

0.327 0.107 9.7 3.055 9.333

0.324 0.105 9.8 3.09 9.55

0.32 0.102 9.9 3.126 9.772

Power

Ratio

dB

Voltage

Ratio

Power

Ratio

Bird Technologies Group TX RX Systems Inc.

Return Loss vs. VSWR

Watts to dBm

Return Loss VSWR

30 1.06

25 1.11

20 1.20

19 1.25

18 1.28

17 1.33

16 1.37

15 1.43

14 1.50

13 1.57

12 1.67

11 1.78

10 1.92

9 2.10

Watts dBm

300 54.8

250 54.0

200 53.0

150 51.8

100 50.0

75 48.8

50 47.0

25 44.0

20 43.0

15 41.8

10 40.0

5 37.0

4 36.0

3 34.8

2 33.0

1 30.0

dBm = 10log P/1mW

Where P = power (Watt)

Insertion Loss

Input Power (Watts)

50 75 100 125 150 200 250 300

3 25 38 50 63 75 100 125 150

2.5 28 42 56 70 84 112 141 169

2 32 47 63 79 95 126 158 189

1.5 35 53 71 88 106 142 177 212

1 40 60 79 99 119 159 199 238

Insertion Loss

.5 45 67 89 111 134 178 223 267

Output Power (Watts)

Free Space Loss

Distance (miles)

.25 .50 .75 1 2 5 10 15

150 68 74 78 80 86 94 100 104

220 71 77 81 83 89 97 103 107

460 78 84 87 90 96 104 110 113

860 83 89 93 95 101 109 115 119

940 84 90 94 96 102 110 116 120

Frequency (MHz)

1920 90 96 100 102 108 116 122 126

Free Space Loss (dB)

Free space loss = 36.6 + 20log D + 20log F

Where D = distance in miles and F = frequency in MHz

Bird Technologies Group TX RX Systems Inc.

8625 Industrial Parkway, Angola, NY 14006 Tel: 716-549-4700 Fax: 716-549-4772 sales@birdrf.com www.bird-technologies.com

Bird Technologies 61-89A-50 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Table of Contents

GENERAL DESCRIPTION

Types of 800 MHz SB II Re-banding kits

Procedure for Non-18 MHz Systems

Procedure for 18 MHz Systems