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707
Posted on Friday, December 12, 2003 - 2:34 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Hiya-

Years ago, I had a 2510 that had a sort of unique feature. The shop had somehow modified it so that in the CW position, you received in a CW mode, but the radio would transmit audio on USB normally. The end effect was that of having a "narrow" recieve mode, which I recall was quite useful and made it possible for me to carry out more than a few QSOs where the normal USB setting was all splattered and noisy.

Do you know of this mod?
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Ca346
Posted on Friday, December 12, 2003 - 6:48 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Bought my HR2510 from my neighbor and it came modified already. Although I have never hooked up a morse code key to it, I have tried to key the transmitter in CW mode. Mine doesn't transmit in that mode at all.

Sure is a great radio tho!
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Ss8541
Posted on Friday, December 12, 2003 - 10:31 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

707,

that is a new one on me. the filter for ssb is the same filter for cw. the bandwidth is the same for both. the only difference in the operation of cw rx and ssb rx is that there is -NO- offset for the carrier oscialltor. besides that, cw and ssb rx is exactly the same for this radio.

yes the higher dollar ham radios have a seperate, and narrower, filter for ssb, but the cheaper radios like the 2510 and 2950 do not have this seperate filter.

the htx-10 had a narrower filter than the 2510/lincoln which could be interchanged, but that is a different modification.
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Bruce
Posted on Friday, December 12, 2003 - 11:54 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

a simple audio filter works wonders for copying CW on a 2510 kits start at 39 bucks....

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