Victims of the god of performance must be! It has happened to you too?
I started with the Es'Hail-2 QO-100 satellite in 2019, But after moving to the new QTH, preference was given to other duties. Step to return was made Icecone of the radiator according to DC8pat. I tried it last summer. Only this year I got to finalization transvertora with an amplifier to a compact whole. The amplifier has received a new bias perimeter. But this has led to a mistake, Where, after disconnecting one driver, the MRF21045 amplifier was given a full power supply on the gate…
Damage, for it happened at the very end. The first idea was to replace the MRF21045 for the new, however, unsoldering the damaged transistor from the heatsink and circuit board proved to be a task beyond my strength and equipment. The second idea was to buy a similar used amplifier and retune it. Surprisingly, there were almost no offers on the Internet. The third option was location transvertora into a waterproof box directly to the irradiator. However, this possibility did not appeal to me very much.
And when an offer for a used amplifier appeared, so the price was staggering. Final decision: buy an amplifier SG Labs LZ5HP.
Hristyan delivered the amplifier very quickly. As well as transvertor, the amplifier is also top-quality. I could finally finish the setup.
I have established dozens of connections during the following evenings. I'm using Kenwood TS-200000 with Behringer XM8500 microphone. This is the chain of the transverter - amplifier - Icecone radiator up to 1m offset dish.
Receive starts with an unprepared LNB. The signal comes through the power switch to RSP1A. He serves SDR CONSOLO, in which I use the middle beacon for satellite to stabilize.
You will read:
Tip synchronization of tuning Qo-100 via Cat in SDR Console
Connecting TCVR-A via Cat and entering offset in SDR Console can be achieved, that the TCVR will retune synchronously with the SDR. It is a very comfortable way of tuning. Due to the influence of temperature, a change in offset is possible, so, if necessary, it must be rebuilt.
HINT: Damping of the signal while broadcasting
I use the attenuation of the received signal in the SDR Console during the broadcast. This is how I fulfill the condition, I can hear you, but the level is so low, that it does not interfere.
SSB Sprint Contest Na Qo-100 Satelite
On Saturday, October 5, I also tried the SSB Sprint Contest activity. In less than two hours of operation, I followed up 42 contacts. Compared to other contests, there is a minimum of interference. For example, there is 3X1A in the diary, CU2ZG, SV8/HB9FIH etc.
