As indicated on my K3S current display, at a PWR setting of 100 watts,
to a 50 ohm dummy load:
160M = 18.0A
80M = 17.6A
40M =16.0A
30M = 16.4A
20M = 20.2A
17M = 20.2A
15M = 17.0A
12M = 17.7A
10M = 17.0A
6M = 18.8A
I'd consider these values to be typical and normal. Actual power
output as indicated on my Bird 43 is a few watts above 100 on all
bands. This is after a fresh transmit gain calibration.
73
Bob, K4TAX
On 11/11/2019 4:29 AM, aj4tf wrote:
Something that I have recently noticed on my K3S/100 : DC current draw on 20
meters is significantly higher (+4 amps) than the other HF bands at the same
power setting and input conditions into a dummy load (into antenna, same
thing). This is both before and after performing a TX Gain Cal.
Test conditions: mode Data A, input single test tone from FLDIGI software
(4-5 bars ALC), tone level & frequency not changed during the tests, ATU
bypassed, ANT1 selected. Power supply voltage in RX, 14.3 V, RX current
1.2 - 1.3 amps.
This ONLY occurs on 20m, the other HF bands seem to be OK. (6m is higher
than the HF bands by about 2 amps, not sure if that is normal or not). For
example, with 80W out: 80m, 60m, 40m, 30m, 17m, 15m, 12m, 10m are all close
to 16 amps, but 20m is 20 amps. (6m is 18 amps).
I searched the archive and found a few references to "bad low pass filter".
I have already emailed details to supp...@elecraft.com but wondered if there
is something I can check in the meantime until they get back to me.
73 David AJ4TF
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