[hpsdr] Hermes cost
Luis Perdomo
luisfp at gmail.com
Thu Feb 23 12:03:33 PST 2012
Looking thru the rear window:
>From TAPR: Ozy, Atlas, LPU, Metis, Pennylane and Mercury= $ 1,358 +
shipping (for TAPR members)
Now let's look at the Wiki page for Hermes:
- Uninterrupted coverage from 50kHz to 54MHz
- Transmit and receiver image rejection > 110dB
- Full duplex operation, any split over entire 160m to 6m range
- Future expansion possible to eight independent receivers using the
same antenna
- 500mW RF output on 160 – 6m amateur bands
- Built-in high performance preamp, with a noise floor typically -135dBm
in 500Hz
- Software-selectable 31dB input attenuator in 1dB steps
- High performance receiver – same specifications as the HPSDR Mercury
receiver (ie Blocking Dynamic Range typically about 125dB)
- FPGA code can be updated via the Ethernet connection
- Seven user-configurable open-collector outputs, independently
selectable per band and Tx/Rx (for relay control, etc - with sequencing via
PC code)
- Separate open-collector PTT connection for amplifier control, etc,
with sequencer
- Microphone PTT jumper-selectable from tip or ring connection
- Bias for electret microphones via jumper
- Four user-configurable 12 bit analogue inputs (for ALC, SWR etc)
- Three user-configurable digital inputs (for linear amplifier over
temperature, etc)
- Optional in-built switch mode power supply – less than xxxmA (receive)
from a 13.8V supply
- I2C bus connector for control of external equipment
- Full QSK using the Kiss Konsole software, since digital signal
processing is not used in the controlling PC for CW carrier generation
- Low-level transmitter output for transverter use (0dBm) as well as
user-selectable output attenuator
- Stereo audio outputs at line and headphone levels
- In-built 1W stereo audio amplifier for directly driving speakers
- Direct, de-bounced connections for a Morse key (straight or iambic)
and PTT
- 122.88MHz master clock, which can be phase-locked to an internal 10MHz
TCXO or external frequency reference
- Jumper-selectable external frequency reference, with signal
processing, to suit numerous GPS-locked 10MHz reference sources
- Direct ribbon cable interface to
Apollo<http://openhpsdr.org/wiki/index.php?title=Apollo>15W power
amplifier, low pass filters and automatic ATU or
Alex <http://openhpsdr.org/wiki/index.php?title=ALEXIARES> Antenna
switch, HPFs and Tx LPFs
- Low noise, high efficiency, Switching Power Supply designed by Kjell
Karson,LA2NI
- Ethernet interface supports fixed, APIP or DHCP IP address
- Hermes responds to ping and ARP requests, auto senses Ethernet cable
connection and connection speed
Compare that to the commercial radios on any ham radio magazine...
I will keep my present setup and get one or maybe two...Hermes[?]
73, Luis NZ5U
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/attachments/20120223/abc1a48d/attachment-0004.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: image/png
Size: 569 bytes
Desc: not available
URL: <http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/attachments/20120223/abc1a48d/attachment-0004.png>
More information about the Hpsdr
mailing list