Re: Proposed upgrades to RSP1 no cancelled ??
Posted: Sun Dec 04, 2016 5:11 pm
Does anyone know what the RSP2 does (if anything) to reduce images? It's been a while since I've been "in the books" on RF engineering. Would dual conversion reduce images, or just introduce new ones?
I have to do a complete run on the RSP1, which I purchased a couple weeks ago, to determine where the images are the worst, and what, if anything I can do about it.
For one thing, I am considering shielding the box. Either covering it with copper foil, or removing the guts from the plastic box and replacing it into a metal one with one HQG tied to the box, and to the antenna input.
I have been quite happy with the RSP1 and SDRUno 1.1, but after several long nights working the 40m and 80m band, I can see where there is room for improvement. That said, I am using a random wire antenna (about 50ft long) with a 9:1 un-un (which I constructed myself). The random wire is a rather "noisy" antenna (if my memory serves me), and there is often a lot of QRN on the HF bands.
If I were thinking of an upgrade to the RSP1 (that was an upgrade for me from the NooElec RTL-SDR), I would be waiting to see what the competition has to offer in the price range of the RSP2.
Before purchasing the RSP1, I was considering the AirSpy with its SpyVerter, but decided on the SDRPlay RSP1 because it was so much less expensive (on sale for $129 at HRO compared to $218 total for the AirSpy + SpyVerter), does not require an up-converter, and I thought I should be saving my money for a "real" HF rig anyway. But the RSP1 has already done for me what I had hoped it would, and that is to rekindle my interest in HF. I have been working only V/UHF for many years, and now with new interest in the HF bands, I might get my old HW-101 running again (needs new caps in the PSU), and go for my Extra ticket.
In the mean time, I'll be experimenting with ways to make the RSP1 better without spending a lot of $$.
Frank - KE2KB
I have to do a complete run on the RSP1, which I purchased a couple weeks ago, to determine where the images are the worst, and what, if anything I can do about it.
For one thing, I am considering shielding the box. Either covering it with copper foil, or removing the guts from the plastic box and replacing it into a metal one with one HQG tied to the box, and to the antenna input.
I have been quite happy with the RSP1 and SDRUno 1.1, but after several long nights working the 40m and 80m band, I can see where there is room for improvement. That said, I am using a random wire antenna (about 50ft long) with a 9:1 un-un (which I constructed myself). The random wire is a rather "noisy" antenna (if my memory serves me), and there is often a lot of QRN on the HF bands.
If I were thinking of an upgrade to the RSP1 (that was an upgrade for me from the NooElec RTL-SDR), I would be waiting to see what the competition has to offer in the price range of the RSP2.
Before purchasing the RSP1, I was considering the AirSpy with its SpyVerter, but decided on the SDRPlay RSP1 because it was so much less expensive (on sale for $129 at HRO compared to $218 total for the AirSpy + SpyVerter), does not require an up-converter, and I thought I should be saving my money for a "real" HF rig anyway. But the RSP1 has already done for me what I had hoped it would, and that is to rekindle my interest in HF. I have been working only V/UHF for many years, and now with new interest in the HF bands, I might get my old HW-101 running again (needs new caps in the PSU), and go for my Extra ticket.
In the mean time, I'll be experimenting with ways to make the RSP1 better without spending a lot of $$.
Frank - KE2KB