Stan, Congratulations on getting this to work, but like most other modern radios, the TS-590SG has an option to enable an internal mechanical relay to key amplifiers that required more than 10ma. Unf
HSEND is TX GND for HF/50 MHz. VSEND is TX GND for VHF/144 MHz. So use HSEND. Maximum current is 20 ma. If you use a milliameter to short the Alpha 9500 KEY IN line to ground (with amp. in OPERATE mo
For Sale: - *Alpha 76A Heavily Modified to work on 6m Only - $800 or Best Offer* Two (2) 8874 tubes. Puts out about 700 W max. Tested with dummy load only. Tunes from 50 - 51.5 Mhz. Very quiet blower
If the receiver goes dead when you switch the Alpha 86 from transmit to operate, it usually means the LittleFuse on the receive pin bias board has opened. Check that first. It's easy to replace; just
Correction: I meant to say, if the receiver goes dead when you switch from STBY to OPER, replace the LittleFuse. 73, Bob, N6TV _______________________________________________ Amps mailing list Amps@c
Dick Byrd, N4UQ. Great service on Alphas! http://www.n4uq.com/ 73, Bob, N6TV _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/
The 51.9% efficiency appears to be worst case at 1500W output. The efficiency of the KPA1500 (Pout / Pin) varies from amplifier to amplifier and from band to band. The same may be true of the RF-Kit
They are listed in the ARRL Product Review: http://www.arrl.org/files/file/protected/Group/Members/ProductReview/PROD_REV_0319.pdf Spurious and harmonic suppression: HF, 62 dB typical, 48 dB worst ca
K4 questions are best directed to the K4 Discussion Group: https://groups.io/g/Elecraft-K4 rather than Amps. Thanks. 73, Bob, N6TV _______________________________________________ Amps mailing list Am
The *QST *review says the TX Delay of the FT-2000 was measured at 35 ms on SSB. See http://www.arrl.org/files/file/protected/Group/Members/ProductReview/pdf/pr0702.pdf . For the FT-2000D it is 37 ms
The W8JI business website is https://www.ctrengineeringinc.com/ 73, Bob, N6TV _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman
You have to do that yourself, here: http://lists.contesting.com/mailman/options/amps 73, Bob, N6TV _______________________________________________ Amps mailing list Amps@contesting.com http://lists.c
The Switchcraft 3502A is still available from Mouser and other sources. https://mou.sr/40OUcg6 73, Bob, N6TV _______________________________________________ Amps mailing list Amps@contesting.com http
For info. about identifying, renumbering, and relabeling COM Port numbers displayed by Windows Device Manager, see this presentation linked from my QRZ.COM page <https://www.qrz.com/db/N6TV>. - Every
Try yet another battery. If you see the same symptoms, check the 9V battery cap and the wires that lead from it; maybe only a few strands are left. I had to splice a new cap into one of my Nye Viking