Well there are those who disagree with you Gary. Specifically the engineers at FLEX. I have never used a FLEX but there are guys I highly respect here (N1EU, N4PY) who have and assure us their radios
Not you Terry, you're a good guy! But I would be proud to have you join our team of people rocking the boat for a better ham radio world! I am certain that we will win over time. The sooner people ju
FLEX 6500 vs 7300 1. The 6500 has dedicated ham band BPFs for each band, the 7300 does not. 2. The stage gain of the 7300 was not designed specifically for the needs of an SDR but rather just copied
(Sorry Jim, but I can't resist this...) Isn't buying a radio from the list you posted kinda like buying the last good horse and buggy, when all your neighbors are looking to buy a horseless carriage?
I haven't seen any test results of the Duo. Has anyone here actually used one? Without a doubt, in red it is the sharpest looking radio currently on the market. Of course it has no ham band BPFs whic
Bob, Sorry but I cannot accept a 1.5 MHz wide filter as a hamband filter. On 40m, we have strong broadcast stations both below and above the ham band. The criticism on the stage gain was a direct quo
Hi Sinisa, I'm sure you are right, you normally always are. However the Dunestar SPECS on their web site claim 40dB band-to-band rejection. I was just quoting the specs. http://www.dunestar.com/store
Correct, my pre-selector is RX only, which the name implies. That is why every transceiver I have had since the mid 70's was immediately modified with two RCA phono jacks mounted on the back. I inter
But that was yesterday. What do people do today? I'm not a fan of RF sensing. Hot switching? No thanks. You may get away with it in SSB but not in CW. 73 - Rick, DJ0IP (Nr. Frankfurt, Germany) Severa
Gary, The last four hf transceivers that Ten-Tec built did not have that keying loop you described. IMO "most" of the transceivers on the market today do not have that keying loop that you described.
Bob, Indeed, 40m is the main band where needed, unless of course the transceiver is participating as one of the radios in a multi-multi station - in which case you need this for all bands. The proble
Hi Al, Yes, of course. I still have one; the Argonaut 515. Of course the bands are nowhere near as bad as they were 30 years ago. I had the original Omni A and at that time, it was better than other
DESPITE that Jim, we had a couple of DX-peditions that would have gone south without them - at least on 160m. One of our teams flew out to Tobago once for CQWW. A couple days later I got a call askin
Oh, I see Jim, you were using the carrier detected switching. We didn't do that. We had them installed in the RX antenna loop (the mod with 2x RCA Phono Jacks to the back panel). They were not switch
The name was a silly; the device superb! I knew the man who designed it, Paul Crapper. YES that was his real name. His company (SEM) was located in a small village just south of Douglas on the Isle o
I wouldn't hold my breath on that $600 model being any better than the others. Products from that source tend to cost a bit more. I didn't quite understand you problem description and antenna setup.
You give up too easily, Bob. Here you will find schematic, bandpass curves, everything your little heart desires! (hi) https://herostechnology.co.uk/pdf/SCR_Preselector_CAT_User_manual_web.pdf The pr
Yes, it looks like I spoke too soon. I was just on my way to bed, found this and downloaded it to read in detail tomorrow. Thought it had more detail. Sorry. 73 - Rick, DJ0IP (Nr. Frankfurt, Germany)
Servus Wolf, Do you have an Orion I or and Orion II? 73 - Rick, DJ0IP (Nr. Frankfurt, Germany) --Original Message-- From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of Wolf Wita via TenT
Paul, I can't comment on the effectiveness of 10dB attenuation with these modern SDR receivers/transceivers because I haven't used any of them. I currently have one tiny QRP SDR transceiver and it do