Friday, November 28, 2014

Pofung BF-9500: UHF Mobile

Pofung BF-9500 UHF 400-470MHz 50W mobile transceiver at 409Shop for $150.

  1. Output:50W/25W/10W
  2. Frequency:400-470MHz
  3. 200 Channels(0-199)
  4. Display on a Large LCD with adjustable brightness
  5. Amateur operation mode and Professional operation mode
  6. Programming different CTCSS,DCS,2Tone,5Tone in per channel
  7. Using 5Tone to send message, Emergency alarm, Call all, ANI, Remotely Kill, Remotely waken
  8. Automatic calling identification function by DTMF-ANT or 5Tone-ANT

All of our item are Brand newMain Function
Menu setting
Work by repeater station
Auto repeater offset
Remote Kill/stun/activate/revive
Wide/Narrow band setting
Channel name editing
CTCSS/DCS setting and scanning
High/Mid/Low power selectable
Voice compander
Repeater offset shift
Talk around
Monitor function
Squelch function
Volume adjustment
Channel mode/Frequency mode switch
Emergency alarm
Voice prompt
Auto power off
Emergency alarm
COMP function
Scan function
1750MHz tone
Call keypad
Frequency range
Channel capacity
Channel spacing
Frequency step
Working Voltage
13.8V ±15%
Squelch style
Frequency Stability
Operating temperature
-20 °C to +60°C
145(W) x 47(H) x 190(D)mm

Sensitivity(12dB SINAD)
Adjacent channel selectivity
Inter modulation
Spurious Rejection
Acoustic frequency response
+ 1— -3dB(0.3-2.55k)
Audio distortion
Audio Output Power

Modulation mode
adjacent channel power
Audio distortion
Acoustic frequency response
+ 1— -3dB(0.3-2.55k)

Bucket Cross-Band Repeater

A cross-band repeater in a bucket project:
"The “Bucket Repeater” is a battery powered cross-band VHF/UHF repeater in a weather proof enclosure that can operate unattended for a week or more, and be remotely activated or deactivated from miles away as needed."

He uses a Puxing PX-UV973 for the radio and has a complete parts list.

Via AR-15 Ham Radio Forum

Thursday, November 27, 2014

Baofeng UV-5X: Happy New Year 2015!

Nate sent me a link to the "2015 Exclusive Sale" of the Baofeng UV-5X. You can run over it or drown it!

    BAOFENG UV-5X UHF+VHF Dual Band/Dual Watch Two-Way Radio FM Function
    Kindly reminder:
    It is a thin layer of protective film on the screen, not scratches. To tear it off while using is not recommended,
    as such layer protects the screen well.
     1. Dual-band handheld transceiver with display function menu on the display “LCD”
     2. DTMF encoded
     3. Lithium-ion battery with high capacity
     4. Commercial FM radio receiver (65 MHz ~ 108MHz)
     5. Incorporates 105 codes “DCS” and 50 privacy codes “CTCSS” programmable
     6. Function “VOX” (voice operated transmission)
     8. Alarm function
     9. Up to 128 memory channels
    10.Broadband (wide) / Narrowband (narrow), selectable
    11.High power / low (5W/1W) selectable
    12.Display illumination and programmable keyboard
    13.Function “beep” on the keyboard
    14.Dual watch/dual reception
    15.Selectable frequency step 2.5/5/6.25/10/12.5/25kHz
    16.Function “OFFSET” (frequency offset for repeater access)
    17.Battery saving function “SAVE”
    18.Timer transmission “TOT” programmable
    19.Selecting the Scan Mode
    20.Function Busy Channel Lock “BCLO”
    21.Built-in RX CTCSS/DCS scan
    22.Built-in LED flashlight
    23.Programmable by PC
    24.Level threshold “Squelch” adjustable from 0 to 9
    25.Crossband reception
    26.Tone end of transmission
    27.Built-in key lock
    How to set the frequency you want?Have you see the button of VFO/MR? That's it! By this button you can switch the mode between frequency and channel.
    - First turn on your tranceiver, press the VFO/MR, make sure it is on frequency mode;
    - Second,press the numbers on keypad directly to enter the frequency, for instance: 5 2 0 0 0 0.
    Congratulations, now the frequency of 520 is set well.

    - Frequency Range: VHF 136-174 MHz (Rx/Tx). UHF 400-520MHz (Rx/Tx);
                    65MHz ~ 108MHz (Only commercial FM radio reception)
    - Memory channels: Up to 128 channels
    - Frequency stability: 2.5ppm
    - Frequency step: 2.5KHz/5KHz/6.25KHz/10KHz/12.5KHz/25KHz
    - Antenna impedance: 50Ω
    - Operating temperature: -20°C to +60°C
    - Supply voltage: Rechargeable Lithium-ion 7.4V/1800mAh
    - Consumption in standby: ≤ 75mA
    - Consumption in reception: 380mA
    - Consumption in transmission: ≤ 1.4A
    - Mode of Operation: Simple or semi-duplex
    - Duty cycle: 03/03/54 min (Rx/Tx/Standby)
    - Dimension: 110x58x33 mm
    - Weight: 222g (included battery+ antenna)

    - RF power: 4W/1W
    - Type of modulation: FM
    - Emission class: 16kΦF3E / 11kΦF3E (W/N)
    - Maximum deviation: ≤ ±5kHz / ≤ ±2.5kHz(W/N)
    - Spurious emissions: <-60db br="">
    Receiver- Receiver sensitivity: 0.2uV(at 12dB SINAD)
    - Intermodulation: 60dB
    - Audio Output: 1000mW
    - Adjacent channel selectivity: 65/60dB

    Power Adapter
    - Input: AC100-240V, 50-60Hz; Output: DC10V/500mA; Plug Type: US

    Package contents:1x BAOFENG UV-5X FM Two-Way Radio Body (One 7.4V/1800mAh Battery included)
    1x Antenna
    1x Power Adapter
    1x Belt Clip
    1x Battery Charger
    1x Earpiece
    1x Hand Strap
    1x User Manual

Pitch Perfect

I lost my man card long ago.

Pitch Perfect for $4 with free shipping at Target.

And the trailer for Pitch Perfect 2.

Picking the Perfect Running Shoe

Another running related infograph... this one for picking the best running shoe so you can run 26.2 miles more or less.


And you should pick up two different pairs:
"The results of two studies, one published in British Journal of Sports Medicine and the other in Scandinavian Journal of Medicine & Science in Sports, suggest that runners who train in more than one pair of shoes were indeed at a reduced risk for injury. The researchers suggest that the parallel use of more than one pair of running shoes varies the load applied to the musculoskeletal system, which can help protect runners from injury."
So basically, I'm doing it wrong.

Wednesday, November 26, 2014

Intel Wireless AC 7260 Update

So I was having a problem with my Intel AC 7260 wireless card using the VHT (802.11ac) mode. I would get better performance by forcing it to HT (802.11n). We updated to AOS on the controllers/access points and I am getting much better results on VHT now. I cannot say if the problem is with Intel or Aruba, but clearly the mix was limiting my performance.

New results with VHT

Client connecting to server, TCP port 5001
TCP window size:  512 KByte

[ ID] Interval       Transfer     Bandwidth
[  4]  0.0- 2.0 sec  35.2 MBytes   148 Mbits/sec
[  4]  2.0- 4.0 sec  34.2 MBytes   144 Mbits/sec
[  4]  4.0- 6.0 sec  34.6 MBytes   145 Mbits/sec
[  4]  6.0- 8.0 sec  34.4 MBytes   144 Mbits/sec
[  4]  8.0-10.0 sec  34.8 MBytes   146 Mbits/sec
[  4]  0.0-10.0 sec   173 MBytes   145 Mbits/sec

[  4]  0.0- 2.0 sec  32.6 MBytes   137 Mbits/sec
[  4]  2.0- 4.0 sec  36.0 MBytes   151 Mbits/sec
[  4]  4.0- 6.0 sec  36.0 MBytes   151 Mbits/sec
[  4]  6.0- 8.0 sec  37.5 MBytes   157 Mbits/sec
[  4]  8.0-10.0 sec  34.0 MBytes   143 Mbits/sec

[  4]  0.0-10.0 sec   177 MBytes   148 Mbits/sec

Old results with VHT

Client connecting to server, TCP port 5001
TCP window size:  512 KByte

[ ID] Interval       Transfer     Bandwidth
[  4]  0.0- 2.0 sec  24.0 MBytes   101 Mbits/sec
[  4]  2.0- 4.0 sec  24.1 MBytes   101 Mbits/sec
[  4]  4.0- 6.0 sec  30.2 MBytes   127 Mbits/sec
[  4]  6.0- 8.0 sec  30.8 MBytes   129 Mbits/sec
[  4]  8.0-10.0 sec  28.1 MBytes   118 Mbits/sec
[  4]  0.0-10.0 sec   137 MBytes   115 Mbits/sec

[  4]  0.0- 2.0 sec  6.67 MBytes  28.0 Mbits/sec
[  4]  2.0- 4.0 sec  6.87 MBytes  28.8 Mbits/sec
[  4]  4.0- 6.0 sec  4.33 MBytes  18.2 Mbits/sec
[  4]  6.0- 8.0 sec  6.17 MBytes  25.9 Mbits/sec
[  4]  8.0-10.0 sec  6.05 MBytes  25.4 Mbits/sec
[  4]  0.0-10.1 sec  30.4 MBytes  25.2 Mbits/sec results are better now, too.

Elecraft KX3 2M Transverter Install Pics

Because 2 meters or bust!

Elecraft KX3 2M Transverter Install Pics


A Baofeng Facebook community... the Baofeng Amateur Radio Network (BARN).