User's Manual
Pacifi c Crest
ADL Vantage/ADL Vantage Pro Users Guide
11
protocol and the radio link rate. If you want to select a modula on type fi rst and then an appropriate channel band-
width, protocol and link rate, please use ADLCONF to confi gure the radio.
Tips and Techniques for Best Performance
Antenna
Antenna placement is cri cal for good performance. Range and coverage is directly propor onal to the height of the
transmi ng and receiving antennas in addi on to antenna gain. Where possible, select a reference sta on loca on that
takes advantage of terrain to get the transmi ng antenna as high as possible.
Always use the telescoping antenna mast and raise the antenna as high as is prac cal and safe given terrain and wind
condi ons.
Do not use a gained antenna if doing so increases the radio’s Eff ec ve Isotropic Radiated Power beyond the limit of your
license.
Line Loss
Line loss from connectors and cables between the radio and antenna decreases the output power transmi ed by the
antenna, thereby decreasing the signal’s range. To minimize line loss, please check the loss-per-length of cable to be
used. For every 3 dB of line loss, the ERP (Eff ec ve Radiated Power) will decrease by half. For example, if you have a 4
W radio and a line loss of 3 dB in your cable and antenna, the power eff ec vely radia ng from the antenna will be 2 W.
Every 6 dB of loss will reduce the radio’s eff ec ve range by 50%.
Power Supplies
Maintain ba eries in a fully charged state. They will last longer if they are not allowed to become completely discharged.
We recommend rou nely connec ng the ba ery to its charger a er every working day and for 24 hours every 3 months
during period of non-use. This will assure op mal performance and long ba ery life.
Equipment Care
Rou ne equipment care will prolong the life and reliability of your ADL Vantage. Radio communica on equipment is
suscep ble to damage from shock or environmental extremes. Never operate the ADL Vantage outside the opera ng-
specifi ca ons contained in Appendix C.
CSMA (Carrier Sense Mul ple Access)
CSMA is a technology implemented in ADL Vantage/ADL Vantage Pro radios to meet the United States Federal Commu-
nica on Commission (FCC) transmi er requirements. It is illegal to transmit on any UHF radio within the United States
without CSMA enabled. CSMA holds off the radio transmission if the frequency is currently being used by a co-channel
user. On occasion, you may note that the radio broadcasts stop for short periods of me. Most o en, this is a case of
co-channel interference and the ADL Vantage/ADL Vantage Pro radio is holding off broadcasts due to the FCC-mandated
CSMA.
Note: You should turn CSMA off when transmi ng within the European Union.