Rick Willaman (K8RIC) did such a nice job converting his Delta unit
that it's only proper to share some of his construction details and
pictures here. While he followed
basic conversion steps, he improved upon the conversion by fully
connectorizing the Delta / Control Head interface, even including S
In addition, some of his excellent pictures have been
the website itself to replace the ones originally taken.
Here are Rick's improvements:
a) J-601 Backplane Wiring
Here's a better picture of
the backplane wiring done to J-601,
using color coded wire - Nice!
b) HL Pin Assignments
This sketch shows how Rick
chose to assign the functions of the HL Pins
that match up to the corresponding pins on J-601. These are the pins on
A-601 that were 'spared up' for use as connection points.
c) J-601 Pin Assignments
Here are the assignments of the J-601 pins
that are later drilled out and soldered to wires to the female DB-25
connector that will be mounted over top of the Delta's J-601 connector.
that Rick used 'reserved' pins 23 and 24 for his S Meter circuit -
d) DB-25 Interface Cabling
The original procedure called for hard-wiring a DB-25 cable to the
'innards' of the Delta, either by drilling a hole in the side of the
radio, or by pulling the DB-25 cable through one of the holes in the
front panel connector. Rick mounting the DB-25
the radio itself. He did this by first drilling
holes in the appropriate power and communications pins,
by soldering the leads from these
pins to a DB-25 connector, and then by mounting
the connector on the Delta itself.
e) Adding an 'S' Meter
the product names Phoenix, Delta, Rangr are trademarks of Ericsson General Electric Mobile
- - If you follow
the steps outlined herein, you do so at your own
risk. I cannot, nor will not, be responsible for
any possible damage to radio equipment, personal property, to yourself
or to others caused by modifications that you may make as a
result of your reading this.
The M/P controls TRANSMITTING and receiving
on many frequencies, suitable for a wide range of HF, VHF and UHF
needs. In the USA, TRANSMIT operation requires a license
issued by the FCC for the class of operation
intended. Amateur radio licensees must maintain strict
control over their equipment, preventing unlicensed
operation within or outside
of the amateur bands.
2010, 2011 - K3JLS