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World of Ham Radio 1997
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WOHR97_AmSoft_(1997-02-01).iso
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2sat.doc
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1997-02-01
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44 lines
I made the mod for expanded coverage on the 2sat and here is the
documentation I came up with. D9 was supposed to be removed. It already
was in my unit but was installed in a second one I modded. Cut it out.
It is located on small standup board after top and bottom are separated.
D6 is changed from a 3 terminal diode with anode on right to one with diode on left. I found that the unit that had D9 did not have D6 and viseversa.
Install D6 with diode on left.
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anode ^
Range and Mode documentation
FM receive only down to 75 Mhz NBFM sensitivity @ 75 Mhz = 500 uv
90 Mhz = 100 uv
108 Mhz unit starts receiving equally well on am or fm. 2 uv
110 Mhz = 2 uv FM and 6 uv AM
120 Mhz = .5 uv FM and 2 uv AM
130 Mhz = .75 uv FM and 2 uv AM
131 Mhz the unlock "u" comes on but still receives same as 130 Mhz
135 Mhz = .75 uv FM and 2 uv AM "u" showing
138 Mhz unit switches off AM receiv and sens on FM = .3 uv
Transmitter enabled and Hi power with internal bat = 1.9 w
All indications good up to 162 Mhz where transmitter unlocks
165 Mhz sensitivity = .6 uv FM rec only
170 Mhz = 1.5 uv FM rec only
175 Mhz = 30 uv FM rec only
180 Mhz = 40 uv
193 Mhz = 50 uv "u" comes on
200 Mhz = No rec at all
204 Mhz unlock goes off and sens = 300 uv
204 - 220 sens dropps to barely receiving 20,000 uv
225 Mhz = 5000 uv
230 Mhz = 3000 uv
240 - 270 = 200 uv
280 Mhz 5 uv
290 Mhz = 1 uv up to 320 Mhz
320 - 367 Mhz = .6 uv
367 and above nothing
Dial runs from 0 to 1310 Mhz
73, N5WX