De HEIL PR-781
is speciaal ontwikkeld voor gebruik met de top-of-the-line transceivers van Kenwood, Yaesu en Icom.
|Impedantie|| : || 600 Ohm, 3 pin XLR aansluiting. |
|Frequentie|| : ||50 tot 16.000 Hz met cardioide karakteristiek. |
|Output level|| : ||-55 dB|
Wordt standaard inclusief de SM-3 bevestiging geleverd.
De adapterkabel (verbinding tussen microfoon en transceiver) wordt niet standaard meegeleverd; bij bestelling het benodigde type apart opgeven. Zie toebehoren.
NOTE FROM HEIL
We sometimes get inquiries asking for an adapter cable for the PR 781 (or the PR20/30/35/40) to connect to a “small” HF transceiver like the Icom IC-706 or IC-7000, or the Yaesu FT-450/817/857/897. As you know, Heil does not make such cables, and there are several reasons why.
In the case of the IC-706/7000, you run up against the problem of Icom utilizing different available mic gain levels on SSB and FM (with FM being much lower). Using our dynamic mics, any of them, will not drive these Icom rigs to full deviation on FM. What’s more, the threshold for tripping the VOX on SSB seems to vary widely, and sometimes a dynamic microphone won’t engage the transmitter reliably when using VOX.
In the cases of the Yaesu FT-450/817/857/897, as well as the previously-mentioned Icom rigs, the very wide frequency response of the PR 781 tends to overwhelm the input stages of the rig, including the SSB modulator. The result is a very “flat” or “muddy” sounding signal. The problem is not the microphone, which (when properly applied) really sparkles; the problem is that you’re injecting a 16,000 Hz voice signal into a radio without sophisticated filtering, and the (nominal) 2,500 Hz bandwidth used on SSB, being so much narrower, means that over 13 kHz of audio, amplified by the mic input amplifiers, is wasted.
Now some customers are quite insistent, and they demand that we provide them with a “solution” that will allow them top connect a PR 40 or PR 781 to one of these small rigs. Yes, a CC-1-XLR-I and HSTA-iM or HSTA-YM will make the electrical connections. But the result will just not be satisfactory. The customer’s audio won’t sound good. The VOX may not work.
Heil makes a number of excellent microphones for Icom rigs. . .the Handi Mic iC (via the CC-1-iM adapter cable) and the iCM (via the HSTA-iM adapter cable) will modulate an IC-706 or IC-7000 beautifully, and with full fidelity. A Handi Mic 5 or GM-5, via the CC-1-YM adapter cable, will sparkle on any of the small Yaesu rigs.
The PR 781 belongs in a broadcast studio; an IC-7000 does not!