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#3
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schrieb:
I have recently been thinking about buying a new portable receiver for bedside use, I'd just about decided on a Sangean ATS-909 (Roberts R861 here in the UK) when I wondered whether I'd actually be better off getting my FRG-7700 off the shelf and using that. Judging from http://www.sherweng.com/table.html, the FRG-7700 is better than even an upper-class portable in terms of strong signal handling (though still not particularly impressive for a tabletop), but doesn't fare so well in terms of maximum filter rejection (dunno about the quality of the filters themselves) und has rather high phase noise (this seems to be typical for PLL synthesizers from those days), which makes selectivity even worse. I already have an external aerial (could be improved). Will the FRG-7700 actually perform better than a modern portable still? Reading through old postings to rec.radio.shortwave opinions seem quite mixed. I have the FTR-7700 Aerial Tuner for my FRG-7700 and it has the memory option and the Gilfer Associates improved filters. With an antenna tuner on a decent antenna, the memory unit (seems to improve frequency stability) and better filters, it shouldn't be hard to beat even a well performing portable. The only downside may be the operation that shows the age of the receiver, and apparently it performs best after warming up for an hour or so. This is certainly a receiver to have fun with even today, even some DX shouldn't be a problem. I haven't specfically looked for any modifications, but this article (in German) suggests that changing some parts can improve the reception quality even further: http://www.dr-boesch.ch/radio/yaesu-frg7700-mod1.htm Doesn't seem to be for the faint of heart though. If anyone should be interested, I could translate the text. Stephan -- HX-inside: iP133, Mill II 4 MB, 256 MB FPM, 2.5 + 1 (IDE) + 4.5 (SCSI) GB; WinNT 3.51 / WinNT 4.0 / Win95a / DOS 6.22 + WfW 3.11 Home: http://stephan.win31.de/ |
#4
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Mark Keith wrote:
wrote in message Will the FRG-7700 actually perform better than a modern portable still? Reading through old postings to rec.radio.shortwave opinions seem quite mixed. I have the FTR-7700 Aerial Tuner for my FRG-7700 and it has the memory option and the Gilfer Associates improved filters. Probably better than most portables. But to be honest, I've used no recently made portables. All the portables I used were in my younger days when that all I could afford. The radios were usable, but compared to what I have now, they were horrible. So I'm kind of biased to be a non-portable type of dude. I consider my IC-706mk2g about as portable as I need to get. If I have to drag a 12v battery around, so be it... It would blow away any battery portable I've personally used. To be honest, I've never seen a portable that I was too thrilled about when it comes to SSB reception. But I suppose many are perfectly suitable for AM-SWL use. I'd rather try that 7700 again myself. It should be perfectly usable. If you get a better radio, get something good like a newer Icom or a drake or whatever...Heck, How often does a person actually require a battery portable to go walk around? I don't too much. At home, I wouldn't even consider a portable at all if you want really good performance. But thats just my opinion.. Lets say I had 300-500 bucks to blow. Would I buy a new whizbang portable? No way... I would chase down an older Icom IC70-71 series, drake , or whatever...I would also prefer many of the "puter driven" radios better than many or most portables. IE: ten tec, icom, etc...I guess all those funky portables I've used over the years left a bad taste in my mouth. The only portable I have that I like, is my old '58 TO. But even it's a relic when compared to anything decent these days. Good for AM-BC though. My main gripe with the "modern" portables that I have seen is funky readout resolutions, many are limited in res, some are not very stable, poor image rejection, just overall not up to my normal expectations. Take for instance my 706g. That sucker has 9 or 10 dial resolutions/speeds you can dial up. I can crawl along like a snail, or cross the spectrum faster than a ****house rat. Or anywhere in between. Readout to a single cycle. Try that with the average portable. But to be fair, the 706g was a $900 radio when I bought it. It's also an all mode-all band transceiver, so lots of that money could be invested in better receiver goodies, if you bought a receiver only. It's less now...About $750? They were $1300-1400 when they first came out. Kind of like puter hardware... :/ MK Just IMHO: I have a Frog 8800 (the successor to the 7700) and I'm quite happy with it as a DX machine. I have a DX396 that I use to listen just to news (Radio Netherlands and Radio Exterior de Espana) so I don't have to keep plugging in the 8800-I have to keep it unplugged because any flicker in power will screw up the microprocessors. The 396 is a nice radio but unsatisfactory for hard core DXing. (It tunes in 5khz steps.) |
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