I'm pretty sure there is no WiMax hardware in the Triumph, since it is a rebadged Huawei that was originally made for another region. Anyway, I've pulled the build.prop from my Virgin Evo V which does have WiMax. I did a quick skim and nothing jumped out at me, but here's the whole thing for you guys to look for yourself:
ro.ril.oem.ecclist=911
ro.ril.set.mtusize=1472
ro.com.google.clientidbase=android-htc
ro.com.google.clientidbase.yt=android-virgin-us
ro.com.google.clientidbase.am=android-virgin-us
ro.com.google.clientidbase.gmm=android-htc
ro.com.google.clientidbase.ms=android-virgin-us
ro.bt.tetheringUI=0
ro.usb.tetheringUI=0
ro.product.brand=virgin_mobile
ro.product.model=HTCEVOV4G
ro.cdma.home.operator.alpha=Virgin Mobile
gsm.sim.operator.alpha=Virgin Mobile
gsm.operator.alpha=Virgin Mobile
ro.cdma.home.operator.numeric=311490
gsm.sim.operator.numeric=311490
gsm.operator.numeric=311490
gsm.sim.operator.iso-country=us
gsm.operator.iso-country=us
ro.da1.enable=true
persist.radio.voice.dom.roam=0
# begin build properties
# autogenerated by buildinfo.sh
ro.aa.customizationid=363616
ro.aa.project=Shooter_ICS_35_S
ro.aa.romver=1.13.652.2
ro.aa.maincid=SPCS_002
ro.aa.cidlist=SPCS_002
ro.aa.rid=87
ro.aa.modelid=PG8610000
ro.build.display.id=1.13.652.2 710RD
ro.aa.skulist=652
ro.aa.taskid=259760
ro.aa.mainsku=652
ro.cwkey=SPCS_002
ro.com.google.clientidbase=android-htc
ro.build.id=IML74K
ro.build.display.id=IML74K
ro.build.version.incremental=372137.2
ro.build.version.sdk=15
ro.build.version.codename=REL
ro.build.version.release=4.0.3
ro.build.date=四 5月 3 22:08:29 CST 2012
ro.build.date.utc=1336054109
ro.build.type=user
ro.build.user=
ro.build.host=ABM011
ro.build.tags=release-keys
ro.product.model=PG86100
ro.product.brand=virgin_mobile
ro.product.name=htc_shooter
ro.product.device=shooter
ro.product.board=shooter
ro.product.cpu.abi=armeabi-v7a
ro.product.cpu.abi2=armeabi
ro.product.manufacturer=HTC
ro.product.locale.language=hdpi
ro.wifi.channels=
ro.board.platform=msm8660
# ro.build.product is obsolete; use ro.product.device
ro.build.product=shooter
# Do not try to parse ro.build.description or .fingerprint
ro.build.description=1.13.652.2 CL372137 release-keys
ro.build.description=1.13.652.2 CL372137 release-keys
ro.build.changelist=372137
ro.build.fingerprint=virgin_mobile/htc_shooter/shooter:4.0.3/IML74K/372137.2:user/release-keys
ro.build.characteristics=default
ro.build.project=Shooter_ICS_35_S:259760
ro.product.version=1.13.652.2 710RD
ro.build.languageremove=0
ro.build.sense.version=3.5
keyguard.no_require_sim=1
# end build properties
#
# system.prop for shooter
#
ro.sf.lcd_density=240
sf.debug.enable3D = 1
debug.fb.rgb565 = 0
debug.sf.hw = 1
debug.composition.type = c2d
debug.enabletr = true
debug.qctwa.preservebuf = 1
rild.libpath=/system/lib/libhtc_ril.so
# Default network type.
# 4 => CDMA mode preferred.
ro.telephony.default_network=4
#
# system props for the data modules
#
ro.use_data_netmgrd=true
persist.data_netmgrd_nint=8
persist.data_netmgrd_mtu=1472
#
wifi.interface=wlan0
wifi.supplicant_scan_interval=15
# The OpenGL ES API level that is natively supported by this device.
# This is a 16.16 fixed point number
ro.opengles.version = 131072
# This is a high density device with more memory, so larger vm heaps for it.
# Change to 32m, due to 2.3.3 GB already change to 32m
# For ICS project, default 32m/48m
dalvik.vm.heapsize=128m
dalvik.vm.heapgrowthlimit=48m
# For the default value of agps
ro.ril.def.agps.mode = 2
# For emmc phone storage
ro.phone_storage = 0
# For ext4 file system
ro.ext4fs = 1
# For FOTA setting (leave empty value to use default)
ro.htc.checkin.url =
http://andchin.htc.com/android/checkin
ro.htc.checkin.crashurl =
http://andchin.htc.com/android/crash
ro.htc.checkin.url_CN =
http://andchin.htccomm.com.cn/android/checkin
ro.htc.checkin.crashurl_CN =
http://andchin.htccomm.com.cn/android/crash
ro.htc.checkin.exmsg.url =
http://fotamsg.htc.com/android/extra/
ro.htc.checkin.exmsg.url_CN =
http://fotamsg.htccomm.com.cn/android/extra/
ro.htc.appupdate.url =
http://apu-chin.htc.com/check-in/rws/and-app/update
ro.htc.appupdate.url_CN =
http://apu-chin.htccomm.com.cn/check-in/rws/and-app/update
ro.htc.appupdate.exmsg.url =
http://apu-msg.htc.com/extra-msg/rws/and-app/msg
ro.htc.appupdate.exmsg.url_CN =
http://apu-msg.htccomm.com.cn/extra-msg/rws/and-app/msg
# release Bluetooth HW/SW information
ro.bt.chipset= Broadcom BCM4329-B1
ro.bt.stack= Broadcom BTL-A
ro.bt.stack.version= 2.0.50.032
#0x10000010010100101000011 represent bt profile list
ro.bt.profiles= 4270403
# Properties of BTLA stack
service.brcm.bt.activation = 0
service.brcm.bt.srv_active = 0
service.brcm.bt.hcid_active = 0
service.brcm.bt.btld = 0
service.brcm.bt.btld_pid = 0
service.brcm.bt.avrcp_pass_thru = 0
service.brcm.bt.avrcp_toggle = 1
service.brcm.bt.local_name =
#Welly_Fang
ro.htc.device.slot1 = NV
# Following property will be reference by Settings.
ro.product.processor = 1.2 GHz dual core
ro.product.ram = 1GB
ro.product.display_resolution = 4.3 inch qHD resolution
ro.product.main_camera = 5M * 2
ro.product.front_camera = 1.3M
ro.product.bluetooth = 3.0
ro.product.wifi = 802.11 b/g/n
# For opensense sdk
ro.htc.common.version = 3.0.0.0
# Properties for supporting framework features
ro.htc.framework.screencapture = true
# For QC perf binary hooks
# src:vendor/qcom/proprietary/android-perf/release/lib/<CPU arch>/libqc-opt.so
ro.vendor.extension_library=/system/lib/libqc-opt.so
#
# ADDITIONAL_BUILD_PROPERTIES
#
ro.setupwizard.mode=OPTIONAL
ro.config.ringtone=QuietlyBrilliant.mp3
ro.config.notification_sound=Zeta.mp3
ro.config.alarm_alert=NewDay.mp3
ro.config.cal_notification=Epsilon.mp3
ro.config.msg_notification=Gamma.mp3
drm.service.enabled=true
ro.com.google.gmsversion=4.0_r2
media.a1026.nsForVoiceRec=0
htc.audio.alt.enable=1
htc.audio.hac.enable=1
lpa.decode=true
lpa.use-stagefright=true
htc.audio.q6.topology=0
ro.setupwizard.enterprise_mode=1
dalvik.vm.dexopt-flags=m=y
net.bt.name=Android
dalvik.vm.stack-trace-file=/data/anr/traces.txt