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July 04, 2013

Comments

Steve Rawdon

I agree with you re the SSB. I aent mine vack for a refund.
Steve
Wellington
New Zealand

Phil Ireland

Hi Richard,
I too have purchased the AR 1945. I've found the radio very sensitive on all bands and the selectivity is excellent. I agree totally about SSB,it can only best be described as dreadful! No matter how carefully you tune, it is almost impossible to resolve sideband satisfactorily. There is a huge decrease in sensitivity as well requiring the volume control to be turned right up. To me it looks like the AGC is being swamped by the BFO signal injection causing blocking and overload.Any readers comments on a fix would be appreciated. If you look carefully at the display, there is provision for a Synchronous Detector and it would be interesting to see if that can be activated in any way. I find the audio very good. To sum up, a great radio apart from that woeful ssb issue which should be addressed for the radio to become a sought after addition to any radio collection. Jaycar, take note! Perhaps Redsun of China can be contacted for an easy fix.
Phil Central West NSW

Avo

Hi Phil and Richard,

I bought the radio many weeks ago with the interest of FM DXing but returned it the next day as I found the FM IF filter a little wide (was getting bleed from my local community station in Hornsby with 2 directly adjacent dx stations - 99.9(2SWR)/100.1(2HHH)/100.3(2MCR)). Then again, this may be a placebo effect because of the good sensitivity.

I too found that SSB resolution was difficult to achieve but this was because the tuning logic was incorrect. I found when tuning down from say 10,000.00 kHz in 10Hz step mode, it would go to 9,999.00 instead of 9,999.99 so I would have to tune up to get back to where it should be. Out of interest, was this using the power adaptor? Wondering if there is spurious noise coming through the adaptor.

I have been racking my brain about buying it again as I have always wanted a traditional old school SW radio (what with SSB and Air as a bonus!). The warehouse it out of stock and customer service at Jaycar advises new stock is coming in on October 3. However, they will not advise if there are any revisions to the radio specs or firmware nor will they advise how I can tell if my local store has the new stock or original (as of last weekend, Jaycar Hornsby still had 2 in stock and the manager wasn't sure if they were getting any more as it was a slow seller compared to the AR1948). This and nobody really knows the origin of this unit. Is it really a Redsun?

Oh, the pain of it all.... :-)

ChrisD

I've lost my instruction manual. Would anyone be kind enough to scan and email me a copy of theirs? cdavis@ibec.com.au

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