Out of curiosity, this evening I did some testing with a Universal LNBF and a 22khz switch and thought I'd share my results.
I tried to do this relatively quickly and get total numbers, but not all transponder info was gathered. There are several variables to this, but I tried to be consistent. Weather was mostly clear with few clouds, winds very light.
The hardware consists of a 1.2m dish, Invacom SNH-031 Universal LNBF, Ecoda 22khz switch and a Manhattan RS-1933 receiver.
Four tests were conducted. Three were with the same LNBF in the same offset position. The fourth as my 'control' with the center LNBF, a standard Titanium PLL-1KS.
The 1.2m dish used in this is motorized now, but still had the offset mount from earlier use as a fixed dish. The offset LNBF bracket was already set for 103W with the dish pointed at 97W.
The dish was motored to 97W and the Invacom Universal LNBF placed in the offset mount. Then the Invacom Universal LNBF was roughly peaked for 103W. Transponders were cleared from receiver menu before and between tests. Full scan (including scrambled) used, network scan off.
Test 1:
RS-1933 set to 9750/10600. Receiver defaults 22khz to 'auto'. Receiver connected directly to Universal LNBF.
(note: realized that I erred in a another post stating 22khz set to on - universal settings default to 'auto')
22 transponders returned in scan with 38 tv channels and a scan time of 5:43 (minutes: seconds)
Test 2:
RS-1933 set to 9750/10600. Receiver defaults 22khz to 'auto'. Receiver to Ecoda switch with Universal LNBF connected to 22khz output on switch. Some time lag between tests 1 and 2. This is how fixed dish on 125W was setup for a long time.
22 transponders returned in scan with 38 tv channels and a scan time of 8:58.
Test 3:
RS-1933 set to 10600 and 22khz 'on'. Receiver to Ecoda switch with Universal LNBF connected 22khz output on switch. Minimal time lag between tests 2 and 3.
19 transponders returned in scan with 34 tv channels and a scan time of 4:21.
Test 4:
Dish motored so center LNBF on 103W. RS-1933 set to 10750 with 22khz off. No switch. Receiver to dish motor to Standard PLL LNBF. Minimal time between tests 3 and 4.
22 transponders returned with 38 tv channels and a scan time of 3:20.
Observations -
During the late afternoon/early evening there were several uplinks that were coming and going. No channels were duplicated during scans. Core channels remained consistent except for uplinks. Scan time with the PLL LNBF was the quickest of all tests.
I tried to do this relatively quickly and get total numbers, but not all transponder info was gathered. There are several variables to this, but I tried to be consistent. Weather was mostly clear with few clouds, winds very light.
The hardware consists of a 1.2m dish, Invacom SNH-031 Universal LNBF, Ecoda 22khz switch and a Manhattan RS-1933 receiver.
Four tests were conducted. Three were with the same LNBF in the same offset position. The fourth as my 'control' with the center LNBF, a standard Titanium PLL-1KS.
The 1.2m dish used in this is motorized now, but still had the offset mount from earlier use as a fixed dish. The offset LNBF bracket was already set for 103W with the dish pointed at 97W.
The dish was motored to 97W and the Invacom Universal LNBF placed in the offset mount. Then the Invacom Universal LNBF was roughly peaked for 103W. Transponders were cleared from receiver menu before and between tests. Full scan (including scrambled) used, network scan off.
Test 1:
RS-1933 set to 9750/10600. Receiver defaults 22khz to 'auto'. Receiver connected directly to Universal LNBF.
(note: realized that I erred in a another post stating 22khz set to on - universal settings default to 'auto')
22 transponders returned in scan with 38 tv channels and a scan time of 5:43 (minutes: seconds)
Test 2:
RS-1933 set to 9750/10600. Receiver defaults 22khz to 'auto'. Receiver to Ecoda switch with Universal LNBF connected to 22khz output on switch. Some time lag between tests 1 and 2. This is how fixed dish on 125W was setup for a long time.
22 transponders returned in scan with 38 tv channels and a scan time of 8:58.
Test 3:
RS-1933 set to 10600 and 22khz 'on'. Receiver to Ecoda switch with Universal LNBF connected 22khz output on switch. Minimal time lag between tests 2 and 3.
19 transponders returned in scan with 34 tv channels and a scan time of 4:21.
Test 4:
Dish motored so center LNBF on 103W. RS-1933 set to 10750 with 22khz off. No switch. Receiver to dish motor to Standard PLL LNBF. Minimal time between tests 3 and 4.
22 transponders returned with 38 tv channels and a scan time of 3:20.
Observations -
During the late afternoon/early evening there were several uplinks that were coming and going. No channels were duplicated during scans. Core channels remained consistent except for uplinks. Scan time with the PLL LNBF was the quickest of all tests.
